chemcad 6 user guide - online

CHEMCAD Version 6 User Guide

Allmaterial2007Chemstations,Inc.

CHEMCADVersion6UserGuide i

CHEMCAD Version 6 User Guide

Table of Contents

Chapter1IntroductiontoCHEMCAD .............................................................................................. 1 OverviewofCHEMCADandItsUses ................................................................................................ 1 CHEMCADProductsandFeatures ................................................................................................. 3

CC-STEADY STATE .......................................................................................................................................3 CC-DYNAMICS ...............................................................................................................................................3 CC-BATCH.......................................................................................................................................................3 CC-THERM.......................................................................................................................................................3 CC-SAFETY NET.............................................................................................................................................3 CC-FLASH........................................................................................................................................................3

CHEMCADFeaturesbyModule...................................................................................................... 4 UnitOpsbyModule............................................................................................................................ 5

Chapter2GettingStartedwithCHEMCAD..................................................................................... 7 InstallingtheSoftware........................................................................................................................... 7 LicensingCHEMCAD ......................................................................................................................... 10 TypesofCHEMCADLicenses........................................................................................................ 10 LicenseSettings ................................................................................................................................. 11 UpdatingaLicense ........................................................................................................................... 12

GettingHelpwithCHEMCAD .......................................................................................................... 14 OnlineHelp ....................................................................................................................................... 14 CHEMCADCoach............................................................................................................................ 15 ProcedureDemos.............................................................................................................................. 15 TheChemstationsWebSite............................................................................................................. 15 ContactingChemstationsTechnicalSupport ............................................................................... 15

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ii CHEMCADVersion6UserGuide

Chapter3TheCHEMCADInterface................................................................................................ 17 TheCHEMCADWindow ................................................................................................................... 17 TheWorkspace.................................................................................................................................. 18 TheCHEMCADExplorerPane ...................................................................................................... 18

The Recent Files Tab .......................................................................................................................................19 The Simulation Tab .........................................................................................................................................19 The Visual Basic Tab.......................................................................................................................................20

ThePalettePane................................................................................................................................ 20 Selecting a Palette............................................................................................................................................20 Customizing Palettes .......................................................................................................................................21

TheMessagesPane ........................................................................................................................... 22 The Errors and Warnings Tab..........................................................................................................................22 The Run Trace Tab ..........................................................................................................................................22 The Notes Tab .................................................................................................................................................23

TheMainMenu................................................................................................................................. 23 TheToolbar........................................................................................................................................ 23

CustomizingtheCHEMCADScreen................................................................................................. 23 ViewingandHidingScreenElements ........................................................................................... 24 ResizingandMovingItems............................................................................................................. 24

Resizing a Pane................................................................................................................................................24 Moving a Pane .................................................................................................................................................25

PinningandUnpinningPanes........................................................................................................ 25 OtherUsefulInterfaceHints............................................................................................................... 26 UndoandRedo ................................................................................................................................. 26 VisibleGrid........................................................................................................................................ 26 AdjustingYourViewoftheWorkspace........................................................................................ 27 TheCHEMCADCoachPane .......................................................................................................... 27

Chapter4WorkingwithSimulationFiles ...................................................................................... 29 AboutCHEMCADSimulationFiles.................................................................................................. 29 UserComponentsinCHEMCAD .................................................................................................. 30 ExampleFiles..................................................................................................................................... 30

OpeninganExistingSimulation ........................................................................................................ 31 CreatingaNewSimulation................................................................................................................. 31 SavingaSimulation.............................................................................................................................. 32 SavingDifferentCasesfortheSameSimulation.......................................................................... 32

EmailingaSimulation ........................................................................................................................ 33 WorkingwithCHEMCADFilesfromPreviousVersions .............................................................. 33

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Chapter5BuildingandUsingaBasicSimulation ........................................................................ 35 StartingaNewSimulation .................................................................................................................. 35 SelectingEngineeringUnits................................................................................................................ 36 DrawingtheFlowsheet........................................................................................................................ 36 AddingUnitOps ............................................................................................................................... 36 SelectingaDefaultIconforaUnitOp ............................................................................................ 37 ManipulatingUnitOpIcons ............................................................................................................ 38 DrawingandConnectingaStream ................................................................................................ 38

Choosing a Stream Route ................................................................................................................................39 Rerouting a Stream ..........................................................................................................................................39

OtherDrawingTools........................................................................................................................ 40 The Text Tool ..................................................................................................................................................40 Simple Drawing Tools: Rectangle, Ellipse, and Line......................................................................................40 Complex Drawing Tools: Multi-line and Polygon ..........................................................................................40

SelectingChemicalComponents........................................................................................................ 41 FindingaComponent ...................................................................................................................... 41 AddingaComponent....................................................................................................................... 42 ChangingtheOrderofSelectedComponents .............................................................................. 43 RemovingItemsfromtheSelectedComponentsList ................................................................. 43

SelectingKvalueandEnthalpyOptions .......................................................................................... 44 UsingtheThermodynamicsWizard .............................................................................................. 44

Selecting Components to Ignore......................................................................................................................44 Specifying Process Conditions ........................................................................................................................44 How the Thermodynamics Wizard Makes Suggestions ..................................................................................44 Should the Thermodynamics Wizard be trusted to make design decisions? ...................................................45

ManuallySelectingThermodynamicsSettings ............................................................................ 45 DefiningStreams .................................................................................................................................. 46 ThermodynamicProperties............................................................................................................. 46 StreamComposition......................................................................................................................... 46 TotalFlowProperties ....................................................................................................................... 47

SpecifyingEquipmentParameters..................................................................................................... 47 RunningtheSimulation....................................................................................................................... 48 ReviewingtheResults.......................................................................................................................... 48

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Chapter6UsingCHEMCADforHighfidelityModeling........................................................... 49 Whatishighfidelitymodeling?......................................................................................................... 49 CriteriaforHighfidelityModeling ................................................................................................... 50 IntroductiontoEquipmentSizing ..................................................................................................... 50 HighfidelityModelingandSizingforCommonUnitOps ............................................................ 51 Piping.................................................................................................................................................. 51

Low-fidelity .....................................................................................................................................................51 Sizing...............................................................................................................................................................51 High-fidelity ....................................................................................................................................................51

Pumps,Compressors,andExpanders ........................................................................................... 52 Low-fidelity .....................................................................................................................................................52 High-fidelity ....................................................................................................................................................52

VesselsandTanks............................................................................................................................. 52 Low-fidelity .....................................................................................................................................................52 Sizing...............................................................................................................................................................53 High-fidelity ....................................................................................................................................................53

Valves ................................................................................................................................................. 53 Low-fidelity .....................................................................................................................................................53 Sizing...............................................................................................................................................................54 High-fidelity ....................................................................................................................................................54

Columns ............................................................................................................................................. 54 Low-fidelity .....................................................................................................................................................54 Sizing...............................................................................................................................................................54 High-fidelity ....................................................................................................................................................55

HeatExchangers ............................................................................................................................... 56 Low-fidelity .....................................................................................................................................................56 Sizing...............................................................................................................................................................56 High-fidelity ....................................................................................................................................................56

ReliefDevices .................................................................................................................................... 57 Low-fidelity .....................................................................................................................................................57 High-fidelity ....................................................................................................................................................58

LicensingConsiderationsforHighfidelityModeling.................................................................... 58 LicenseSettings ................................................................................................................................. 58

Chapter7BuildingandUsingaDynamicSimulation ................................................................. 59 Whatdowemeanbydynamics? ....................................................................................................... 59 LicensingConsiderations .................................................................................................................... 59 LicenseSettings ................................................................................................................................. 60

AdditionalInputforDynamicOperation......................................................................................... 60 StrategiesforDynamicSimulations ............................................................................................... 61

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SettingUpDynamicOperation .......................................................................................................... 61 SwitchingtoDynamics .................................................................................................................... 61 SettingtheRunTime........................................................................................................................ 63 SelectingStreamsandUnitOps ...................................................................................................... 65

RunningaDynamicSimulation ......................................................................................................... 66 RunfromInitialState ....................................................................................................................... 66 RunfromCurrentState.................................................................................................................... 66 RunOneStepataTime ................................................................................................................... 67

OtherDynamicCommands ................................................................................................................ 67 ResettoInitialState .......................................................................................................................... 67 SaveAsInitialState .......................................................................................................................... 68

OutputfromDynamicSimulations ................................................................................................... 68 ReviewingtheFlowsheetSpecifications........................................................................................ 68 PlottingDynamicResults ................................................................................................................ 69 TextbasedDynamicReports .......................................................................................................... 69

Chapter8OutputandReports........................................................................................................... 71 TextReports .......................................................................................................................................... 71 ReportSetup ...................................................................................................................................... 71 StreambasedReports....................................................................................................................... 72

Stream Groups .................................................................................................................................................72 Stream Compositions.......................................................................................................................................74 Stream Properties.............................................................................................................................................75 Particle Size Distribution.................................................................................................................................76 Pseudocomponent Curves................................................................................................................................76

UnitOpbasedReports...................................................................................................................... 76 UnitOp Groups ................................................................................................................................................76 Select UnitOps.................................................................................................................................................77 Spec Sheet........................................................................................................................................................77 Distillation .......................................................................................................................................................78

FlowsheetbasedReports ................................................................................................................. 78 Topology..........................................................................................................................................................78 Thermodynamics .............................................................................................................................................78 Mass and Energy Balances ..............................................................................................................................79

DynamicsReports............................................................................................................................. 79 Batch Results ...................................................................................................................................................79 Dynamics .........................................................................................................................................................79

ConsolidatedReport......................................................................................................................... 79

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GraphicalReports................................................................................................................................. 80 ThermophysicalDataGraphs ......................................................................................................... 80

TPXY...............................................................................................................................................................80 Binary LLE......................................................................................................................................................80 Binodal Plot .....................................................................................................................................................80 Binodal/Residue Curves ..................................................................................................................................80 Residue Curves ................................................................................................................................................80

FlowsheetbasedGraphs.................................................................................................................. 80 UnitOpbasedPlots .......................................................................................................................... 81

Tower Profiles .................................................................................................................................................81 Heat Curves .....................................................................................................................................................81 Plug Flow Reactor Profile ...............................................................................................................................81 Pipe Profile ......................................................................................................................................................81 Controller Convergence...................................................................................................................................81

DynamicPlots ................................................................................................................................... 81 UserspecifiedFile ............................................................................................................................ 81

PrintingCHEMCADReports ............................................................................................................. 82 ProcessFlowDiagrams ....................................................................................................................... 82 FlowsheetDataboxes........................................................................................................................ 82

Stream Boxes...................................................................................................................................................82 UnitOp Boxes ..................................................................................................................................................83 TP Boxes .........................................................................................................................................................83 Excel Range Boxes ..........................................................................................................................................84

UsingtheLayersFeatureforSelectiveViewingandPrinting ................................................... 85 Scenarios for Using Layers..............................................................................................................................85 Creating a New layer .......................................................................................................................................86 Assigning Objects to a Layer...........................................................................................................................87 Hiding and Viewing Layers.............................................................................................................................88 Removing an Object from a Layer ..................................................................................................................88 Deleting an Entire Layer..................................................................................................................................88

PrintingaProcessFlowDiagram ................................................................................................... 88 Chapter9CustomizingCHEMCAD ................................................................................................ 91 FlowsheetTemplates ........................................................................................................................... 91 CreatingaTemplate ......................................................................................................................... 92 ViewingaTemplatesProperties.................................................................................................... 92 ApplyingaTemplate........................................................................................................................ 92 RenamingorDeletingaTemplate.................................................................................................. 92

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CreatingCustomComponents ........................................................................................................... 93 AddingaSingleComponent........................................................................................................... 93

Creating the Component ..................................................................................................................................93 Regressing Data into the Component ..............................................................................................................95

PseudocomponentRange ................................................................................................................ 96 ImportingaNeutralFile .................................................................................................................. 97

CreatingaCustomSymbol ................................................................................................................. 98 CustomizedCostingCalculations.................................................................................................... 100 CreatingCustomUnitOps ................................................................................................................ 100 CreatingaCustomUnitOpDialogBox ....................................................................................... 101

CustomizingThermodynamics ........................................................................................................ 102 CreatingaCustomKvalueorEnthalpyModel......................................................................... 102 CreatingaCustomMixingRule ................................................................................................... 104

VisualBasicApplications(VBA)...................................................................................................... 104 DefiningaReaction,MixingRule,orUnitOp ............................................................................ 104 UsingaVBAdefinedReaction ..................................................................................................... 105 UsingaVBAdefinedMixingRule............................................................................................... 106 UsingaVBAdefinedUnitOp ....................................................................................................... 106

Chapter10DataInterfaces ............................................................................................................... 107 ExcelDataMapping........................................................................................................................... 107 CreatinganExcelDataMap.......................................................................................................... 108 DataMapExecutionRules ............................................................................................................ 111

CreatingExcelUnitOps ..................................................................................................................... 113 SpecificationSheets ............................................................................................................................ 113 UsingCHEMCADasanOPCServer .............................................................................................. 114 OPCApplications ........................................................................................................................... 114 OPCCompliance............................................................................................................................. 114 EnablingCHEMCADasanOPCServer ..................................................................................... 115 ReadingandWritingValuestoCHEMCADUsingOPC ......................................................... 115 OPCServerOperations.................................................................................................................. 115 CHEMCADOPCNamespace ....................................................................................................... 116

COMInterfaces ................................................................................................................................... 117 ConnectingExcelandCHEMCAD:ASimpleCOMInterface ................................................. 117

Using the VBClient Example ........................................................................................................................118 A Peek under the Hood..................................................................................................................................118

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viii CHEMCADVersion6UserGuide

Chapter11CHEMCADTutorials ................................................................................................... 121 CCSTEADYSTATETutorial ........................................................................................................... 122 Overview.......................................................................................................................................... 122 StartingaNewSimulation ............................................................................................................ 123 SelectingEngineeringUnits .......................................................................................................... 123 DrawingtheFlowsheet .................................................................................................................. 123

Placing UnitOps.............................................................................................................................................123 Drawing Streams ...........................................................................................................................................126

SelectingComponents.................................................................................................................... 126 SelectingThermodynamicOptions.............................................................................................. 128 DefiningtheFeedStreams............................................................................................................. 130 EnterUnitOpParameters .............................................................................................................. 132

First Heat Exchanger .....................................................................................................................................132 Second Heat Exchanger .................................................................................................................................133 Flash Drum ....................................................................................................................................................133 Valve..............................................................................................................................................................133 Stabilizer Tower ............................................................................................................................................134

RuntheSimulation ......................................................................................................................... 134 ReviewtheResultsandPrintasNeeded..................................................................................... 134

Checking the Cricondentherm Dewpoint.......................................................................................................134 Checking the Bottoms Stream Purity.............................................................................................................137 Re-running the Simulation.............................................................................................................................138 Producing a Text Report ................................................................................................................................139 Generating a Process Flow Diagram..............................................................................................................140

CCTHERMTutorial .......................................................................................................................... 144 OverviewoftheHeatExchangerSizingProcess ....................................................................... 145 IdentifytheTubesideStream....................................................................................................... 145 GeneratetheHeatCurve ............................................................................................................... 146 DefineGeneralSpecifications ....................................................................................................... 147 SetTubeSpecifications................................................................................................................... 148 SetShellSpecifications ................................................................................................................... 148 SetBaffleSpecifications.................................................................................................................. 149

Baffle Spacing ...............................................................................................................................................149 Baffle Cut Percent .........................................................................................................................................149

SetNozzleSpecifications ............................................................................................................... 149 SetClearanceSpecifications .......................................................................................................... 150 SetMaterialSpecifications............................................................................................................. 151 SetMiscellaneousSpecifications................................................................................................... 151 RunSizingCalculations................................................................................................................. 151

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ReviewResultsandCreatePlots .................................................................................................. 152 CCBATCHTutorial .......................................................................................................................... 154 DescriptionoftheProblem............................................................................................................ 154 OverviewoftheBatchDistillationProcess ................................................................................. 155 CreatingaNewSimulation ........................................................................................................... 156 SelectingEngineeringUnits .......................................................................................................... 156 DrawingtheFlowsheet .................................................................................................................. 156

Placing UnitOps.............................................................................................................................................156 Drawing Streams ...........................................................................................................................................157

SelectingComponents.................................................................................................................... 158 SelectingThermodynamicOptions.............................................................................................. 158 SpecifyingPotCharge.................................................................................................................... 160 SpecifyingtheDistillationColumn.............................................................................................. 162 DefiningtheOperatingSteps........................................................................................................ 163

Operating Step 1 ............................................................................................................................................163 Operating Step 2 ............................................................................................................................................164 Operating Step 3 ............................................................................................................................................164 Operating Step 4 ............................................................................................................................................165 Operating Step 5 ............................................................................................................................................165 The Run Time Information Dialog Box.........................................................................................................165

RunningtheSimulation ................................................................................................................. 166 ReviewingandPrintingResults ................................................................................................... 167

Plotting the Results ........................................................................................................................................167 Generating Text Reports................................................................................................................................168 Generating a Full Report ...............................................................................................................................168

PipingTutorial .................................................................................................................................... 170 ControlValveSizingExample ...................................................................................................... 170

Problem Statement.........................................................................................................................................170 Rating Case....................................................................................................................................................171 Flow Rate as a Function of Pressure..............................................................................................................173

SimpleFlowExample..................................................................................................................... 176 Problem Statement.........................................................................................................................................176 Creating the Simulation .................................................................................................................................176 Using Controllers to Simplify the Problem ...................................................................................................178 Calculating NPSHA.......................................................................................................................................179

BranchedFlowExample ................................................................................................................ 180 Problem Statement.........................................................................................................................................180 Creating the Simulation .................................................................................................................................180 Running the Simulation .................................................................................................................................182 Selecting a Pump ...........................................................................................................................................183

Index ........................................................................................................................................ 185

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x CHEMCADVersion6UserGuide

CHEMCADVersion6UserGuide 1

Chapter 1

Introduction to CHEMCAD

WelcometoCHEMCADVersion6.0,apowerfulandeffectivesoftwaretoolforchemicalprocesssimulation.WhetheryoureaneworexperiencedCHEMCADuser,youllappreciatetheprogramsuserfriendly,featurerichinterface.CreatingflowsheetsandrunningsimulationsisfastandeasywithCHEMCAD,andtheprogramishighlycustomizabletofityourneedsandthewayyouwork.

ThismanualwillhelpyougetupandrunningwithCHEMCAD,frominstallationandlicensingtotutorialsthatwalkyouthroughrealworldexamples.

Overview of CHEMCAD and Its Uses Todayschemicalprocessingindustry(CPI)facesnumerouschallenges:risingfuelandfeedstockcosts,reducedengineeringstaff,shorterproductlifecycles,increasedglobalcompetition,andincreasedregulation.ThesechallengesrequirethatCPIcompaniesseekoutandusethebesttoolstoincreaseproductivityandimproveengineeringdecisions.

CHEMCADisapowerfulandflexiblechemicalprocesssimulationenvironment,builtaroundthreekeyvaluesofinnovation,integration,andopenarchitecture.ThesevaluescreateimportantadvantagesforCHEMCADusers:

Thelatestchemicalengineeringtechniquesatyourfingertips Allfunctionalityunitedinasinglesoftwareenvironment Seamlessconnectiontothechemicalengineeringcomputingenvironment,with

linkstotoolssuchasMSExcelandWordandinterfacessuchasCOM,DCOM,OPC,CAPEOPEN,andXML

IntroductiontoCHEMCAD

2 CHEMCADVersion6UserGuide

CHEMCADcombinesastateoftheartgraphicaluserinterface(GUI),anextensivechemicalcomponentdatabase,alargelibraryofthermodynamicdata,andalibraryofthemostcommonunitoperationstogiveuserstheabilitytoprovidesignificantandmeasurablereturnsontheirinvestment.Inaddition,theprogramiscustomizabletoallowcustomchemicals,thermodynamics,unitoperations,calculations,andreportingallingredientsforapowerfuluserexperience.

CHEMCADiscapableofmodelingcontinuous,batch,andsemibatchprocesses,anditcansimulatebothsteadystateanddynamicsystems.Thisprogramisusedextensivelyaroundtheworldforthedesign,operation,andmaintenanceofchemicalprocessesinawidevarietyofindustries,includingoilandgasexploration,production,andrefining;gasprocessing;commodityandspecialtychemicals;pharmaceuticals;biofuels;andprocessequipmentmanufacturing.

Withinalloftheseindustries,chemicalengineersworkeverydaywithCHEMCADtoaddressavarietyofchallenges:

Initialdesignofnewprocesses Optimizationordebottleneckingofexistingprocesses Performancemonitoringofprocesses Designandratingofprocessequipmentsuchasvessels,columns,heat

exchangers,piping,valves,andinstrumentation

Evaluationofsafetyreliefdevices Heatexchangersizing Pressureandflowbalancingofcomplexpipingnetworks Reconciliationofplantdata Economiccomparisonsofprocessalternatives Advancedprocesscontrol(APC),includingmodelpredictivecontrol(MPC),

realtimeoptimization(RTO),andoperatortrainingsystems(OTS)

Scaleupofprocessesfromlabscaletopilotscale,andfrompilotscaletofullscale

Binaryinteractionparameter(BIP)regressionfromprocessorlabdata Batchreactionrateregressionfromprocessorlabdata

Nomatterhowcomplexyourprocess,CHEMCADiscapableofdeliveringtheresultsyouneedtostaycompetitiveinanincreasinglyfastandfluidglobalmarket.Easytolearnandhighlycustomizable,CHEMCADcanputfutureproofsolutionswithineasyreachofyourengineeringstaff.



CHEMCAD Products and Features TheCHEMCADsuiteconsistsofseveralmodulesthatservespecificpurposes.Dependingonyourparticularneeds,youmayhavepurchasedsomeorallofthesemodules.ThefollowingarebriefdescriptionsofthevariousCHEMCADmodulesandtheirmostcommonuses.

CC-STEADY STATE ThemainCHEMCADproduct,knownasCCSTEADYSTATE,enablesyoutodesignnewprocesses,rateexistingprocesses,andoptimizeprocessesinsteadystate.

CC-DYNAMICS ThemoduleknownasCCDYNAMICSmakesitpossibletodesignandrateexistingprocessesusingadynamicsimulation.ThismoduleisfullyintegratedwithCHEMCADtomakeswitchingbetweensteadystateanddynamicseasyandintuitive.UsingCCDYNAMICS,youcaneasilysimulateeverythingfromsimplevesselaccumulationtocomplexcontrolsystemsoncolumns.Thismodulealsoprovidestoolsforsimulationofcontinuousstirredtankreactors(CSTRs),includingcomplexreactionrateandpressurecalculation.

CC-BATCH TheCCBATCHproductenablesyoutodesign,rate,oroptimizeabatchdistillationcolumn.CCBATCHincludesaschedulinginterfacetoallowanoperationstepapproachtosimulationofbatchcolumns.

CC-THERM TheCCTHERMproductletsyoudesignasingleheatexchanger,orvetavendorsheatexchangerdesign.Itisalsoidealforcustomerswhowanttorateexistingexchangersinnewservice,ortoperformcalculationsonhypotheticalsituations.CCTHERMcansimulateshellandtube,aircooled,plateandframe,anddoublepipeexchangers.FullintegrationwithCHEMCADmakesitpossibletocalculateexitconditionsfromexchangergeometryforhighfidelitysimulations.

CC-SAFETY NET TheCCSAFETYNETproductprovidesthecapabilitytodesignorratepipingnetworksandsafetyreliefdevicesandsystems,inbothsteadystateanddynamicsystems.ThesteadystatefeaturesofCCSAFETYNETareincludedwithCCSTEADYSTATE.Thisproductenablesuserstomakesimultaneousflowandpressurebalancedsimulationseveninreverseflowsituationsforsingleormultiphaseflow.

CC-FLASH TheCCFLASHmoduleprovidesphysicalpropertyandphaseequilibriumdata,aswellaspropertypredictionandregression.CCFLASHisasubsetofCCSTEADYSTATE,andismeantforcustomerswhodonotneedfullflowsheetsimulationtools.



CHEMCAD Features by Module ThefollowingmatrixliststhefeaturesassociatedwitheachcomponentoftheCHEMCADsuite.Foramoredetailedexplanation,ortoinquireaboutaparticularcomponentorfeature,pleasecontactChemstationsoryourCHEMCADdistributor(seecompletecontactinformationatwww.chemstations.net/contact.htm).

CC-S

TEA

DY

STA

TE

CC-D

YNA

MIC

S

CC-B

ATC

H

CC-T

HER

M

CC-S

AFE

TY N

ET

CC-F

LASH

VB/COM/OPC/Data Map 9 9 Sensitivity/optimization 9 9 9 Sizing (line/valve/orifice/vessel) 9 9 9 Run steady state 9 9 9 9 9 Run dynamics 9 9 Run recycles 9 9 9 Costing 9 9 9 Reconciliation 9 9 Sizing columns 9 9 9 Sizing heat exchangers 9 Economics 9 9 Reports (incl. Excel) 9 9 9 9 9 9 DIERS 9 9 9 CO2 solid 9 9 9 9 Hydrates 9 9 9 9 Depress 9 9 9 9 TOC/COD 9 9 9 9 Pure regression 9 9 9 9 9 9 BIP regression 9 9 9 9 9 9 Electrolyte regression 9 9 9 9 9 9 Rate regression 9 9 Units calculator 9 9 9 9 9 9 Execute parser 9 9 Environmental report 9 9 9 9 9 9 Simple calculator 9 9 9 9 9 9 Spec sheet 9 9 9 9 9



UnitOps by Module Theavailabilityofcertainunitoperations,orUnitOps,inCHEMCADsimulationsisafunctionofwhichmodulesyouhavelicensed.ThefollowingmatrixlistsallavailableUnitOpsandtheCHEMCADmodulesassociatedwiththem.

CC-S

TEA

DY

STA

TE

CC-D

YNA

MIC

S

CC-B

ATC

H

CC-T

HER

M

CC-S

AFE

TY N

ET

CC-F

LASH

Baghouse filter 9 9 Batch column 9 Batch reactor 9 Calculator 9 9 Centrifuge 9 9 Component separator 9 9 Compressor 9 9 9 Control valve 9 9 9 Controller 9 9 9 Crusher/grinder 9 9 Crystallizer 9 9 Cyclone 9 9 Divider 9 9 9 9 Dynamic vessel 9 9 Electrostatic precipitator 9 9 Equilibrium reactor 9 9 Excel unit 9 9 Expander 9 9 9 Fired heater 9 9 Flash 9 9 9 9 Gibbs reactor 9 9 Heat exchanger 9 9 9 9 Hydrocyclone 9 9 Kinetic reactor 9 9 Liquid/liquid extractor 9 9 LLV flash* 9 9 LNGH exchanger 9 9



CC-S

TEA

DY

STA

TE

CC-D

YNA

MIC

S

CC-B

ATC

H

CC-T

HER

M

CC-S

AFE

TY N

ET

CC-F

LASH

Loop 9 9 Mixer 9 9 9 9 Node 9 9 9 Phase generator* 9 9 PID controller 9 9 9 Pipe simulator 9 9 9 Polymer reactor

Pump 9 9 9 Ramp controller 9 9 9 Recorder* 9 Run subflowsheet META unit 9 9 SCDS distillation column 9 9 Screen 9 9 Sedimentator 9 9 Shortcut column 9 9 Solids dryer 9 9 Solids washer 9 9 Stoichiometric reactor 9 9 Stream reference 9 9 Tank 9 Time delay 9 9 Time switch 9 9 Tower distillation column 9 9 Tower plus distillation column 9 9 User-added module 9 9 Vacuum filter 9 9 Valve 9 9 9 Venturi scrubber 9 9 Vessel* 9 9

* These UnitOps will be phased out eventually.


Chapter 2

Getting Started with CHEMCAD

NowthatyouhaveCHEMCADinhand,youprobablywanttogetstartedrightaway.Letsgetdirectlytothepoint,withstepbystepinstructionsforinstallingandlicensingtheprogram.

Installing the Software StartbyensuringthatyourPCmeetstheminimumsystemrequirements,aslistedbelow.ItsalsoagoodideatofindoutbeforeyoubeginwhetheryourcopyofCHEMCADwillrelyonanetworklicense;ifitwill,makesuretoaskyournetwork

administratorforalltheinformationthatyoullneedwheninstallationiscompleteanditstimetosetuplicensing.

Onceyouveestablishedthatyourcomputerisreadyforinstallation,inserttheCHEMCAD6.0discintoanavailableCDmediadriveandwatchfortheCHEMCADsplashscreentoappear.

CHEMCAD System Requirements Processor speed: 500 MHz or higher Operating system: Windows 2000, XP, or Vista RAM: 256 MB Video card: 128 MB or higher video memory

Display resolution: 1024 x 768 or higher Hard disk space: 500 MB (750 MB during installation)

Productivity software: Some features require Microsoft Office



Note: IfyouinsertthediscandclosetheCDmediadrivedoor,butnothinghappenswithinoneminute,thenyoursystemisnotconfiguredtolaunchtheCDcontentautomatically.Tolaunchtheinstallationprogrammanually,gotoMyComputer,doubleclicktheiconforyourcomputersCDmediadrive,andthendoubleclickthefilecalledSetup.exe.

ClickInstallCHEMCADtolaunchtheInstallShieldWizard.InstallShieldinspectsyourcomputerforsoftwarecomponentsthatCHEMCADwillneed,andpromptsyoutoinstallanyneededcomponentswithascreensimilartoFigure201.

Figure 2-01: InstallShield Wizard screen listing software components to be installed

ClickInstalltocontinue.FollowthepromptsonallotherscreensuntilyouseetheCHEMCADSuiteInstallShieldWizardscreen,showninFigure202.

Note:DependingonhowmanysoftwarecomponentsInstallShieldidentifies,theremaybequiteafewscreens,andtheprocedurecouldtakeseveralminutes.Oncethesecomponentsareinstalledonyourcomputer,however,youwillnotneedtoreinstallthemwithfutureCHEMCADupdates.



Figure 2-02: The CHEMCAD Suite InstallShield Wizard screen

ClickNexttobegintheinstallationprocess.TheLicenseAgreementscreenappears,listingtheCHEMCADstandardlicense.Onceyouvereadandunderstoodthetermsofthelicense,youllneedtoclicktheIacceptthetermsofthelicenseagreementbuttonbeforeyoucanclickNextagaintoproceed.Notethatyouhavetheoptiontoprintacopyofthelicenseagreementfromthisscreen.

Figure 2-03: The Standard License screen

TheDestinationFolderscreenappearsnext,displayingthenameofthefolderintowhichtheCHEMCADfileswillbeinstalledbydefault.Normally,thisdestinationisC:\ProgramFiles\Chemstations\CHEMCAD,anditisrecommendedthatyouusethislocationunlessyouhaveaspecificneedtoinstalltheprogramelsewhere.ClicktheChangebuttonifyouwanttochangethefiledestination,orclickNexttoacceptthesuggesteddestinationandproceed.

TheSetupTypescreennowappears,offeringachoicebetweencompleteandcustominstallation.Eachtypeofinstallationisdescribedonthescreen.EitheracceptthedefaultsettingofCompleteorclickCustomtoselectspecificcomponentstoinstall,thenclickNexttoproceed.



TheReadytoInstalltheProgramscreennowappears.Notethatonthisscreen,andinfactonanyscreenintheinstallationprocess,youcanclickBacktoreturntoapreviousscreenandverifyorchangeyourinstallationsettings.Ifyouaresatisfiedwithyoursettingsastheyare,clickNexttostarttheinstallation.

TheInstallingCHEMCADSuitescreenappears,showingtheprogressofyourinstallationwithagreenstatusbar.

Figure 2-04: Status bar showing the progress of CHEMCAD installation

Wheninstallationiscomplete,youllseeonefinalscreen,whichstatesthattheInstallShieldWizardhascompletedinstallationoftheCHEMCADSuite.ClickFinishtoclosetheinstallationprogramandopenCHEMCAD6.

Licensing CHEMCAD BeforeyoucanuseCHEMCAD,youllneedtosetupalicensingschemeofsometype.Dependingonyourparticularlicensingagreement,youwilluseoneofseveraltypesoflicensestorunCHEMCAD.

Types of CHEMCAD Licenses ThevarioustypesofCHEMCADlicensesaredesignedtofitdifferentuserssoftware,hardware,andnetworkingneeds.Mostlicensesrequiretheuseofahardwaredevice,commonlyknownasadongle,toruntheprogram.

ThedonglesimplyplugsintoeitheraUSBportoraparallelportonthecomputer,andmustbepluggedinanytimetheprogramruns.IfyouworkonanetworkwithotherCHEMCADusers,yourlicensemayrelyonadonglepluggedintoanetworkserverelsewhereinyourorganization,ratherthanonepluggeddirectlyintoyourcomputer.



Youoryourorganizationwilluseoneoffourtypesofdongles:

SuperProsingleuserdongle(parallelorUSBconnection) SuperProNetdongle(parallelorUSBconnection) SentinelScribesingleuserdongle(parallelconnection) NetSentinelnetworkdongle(parallelconnection)

Insomeinstances,softwarelicensingisaccomplishedwithouttheuseofahardwaredevice:

LicenseManagersoftware,whichrunsoveralocalorwideaccessnetwork

SystemAuthorization,amethodthatauthorizesasingleusermachineforalimitedtime(usedforsoftwareevaluation)

License Settings TorunCHEMCADforthefirsttime,makesurethatyourdongle(ifapplicable)ispluggedinproperly,andthenstarttheprogram.FromtheWindowsStartmenu,selectAllPrograms>Chemstations>CHEMCAD.

Theprogramopens,displayingaCHEMCADsplashscreen.Afterafewmoments,thatscreenisreplacedbytheLicenseSettingsscreen.

Figure 2-05: The License Settings screen with default settings

ThecheckedboxesontheleftsideofthisscreenindicatethetypesoflicensinghardwareandsoftwarethatCHEMCADwillsearchforwhenyouclickOK.Notethatnetworklicensingmethodsarenotchecked;thissavestimeformanyusers,becausesearchingforanetworkdonglecanbetimeconsuming.



Note:Ifyouareusingoneofthenetworklicensingmethods(NetSentinel,SuperProNet,orLicenseManager),youllneedtochecktheappropriateboxbeforeclickingOK.YoucanalsoclicktheotherboxestocleartheircheckmarksandspeedupCHEMCADssearchforyourlicense.

Ontherightsideofthescreen,theNetworkdeviceproductcheckoutarealetsnetworkuserschoosewhetherornottorequestlicensesforspecificCHEMCADmodules.Foreachlistedproduct,youcanelecttosecurealicenseAlways,Asneeded,orNever.

ThedefaultsettingforalloftheseslidercontrolsisAsneeded,whichsecuresalicenseonlywhenyoubegintouseaspecificCHEMCADfeaturecontrolledbyacertainproduct.Thissettingisidealinmostsituations,asitleavesunneededlicensesavailableforotherusers.Tochangeanymodulescheckoutsetting,simplyclicktotheleftorrightofthecurrentsettingtomovetheslider.

Inmostcases,youwontneedtomakeanychangesontheLicenseSettingsscreen,althoughyoumaywanttocleartheAlwaysshowthisscreenatstartupcheckbox,toavoidseeingthisscreeneachtimeyoustartCHEMCAD.

Note:Ifyouveturnedoffthischeckbox,youcanstillopentheLicenseSettingsdialogboxatanytime.EitherselectTools>Options>LicenseSettingsfromwithinanopensimulation,orselectLicense>LicenseSettingswithnosimulationopen.

Whenyouvemadeanychangesneeded,clickOK.OnceCHEMCADhaslocatedyourvalidlicense,youllseetheLicensesinUsescreen,whichlistsalllicensedproductsalongwiththetypeoflicensedeviceorsoftwarevalidatingeachproduct.ClickOKtoclosethisscreenandaccessthemainCHEMCADwindow.

Updating a License CHEMCADdonglesrequirereprogrammingonaregularbasis,eitheronceayearormoreoftendependingonyourlicensingagreement.Thisisasecuritymeasuretoreducethelikelihoodthatyourdonglewillbestolenandmisused.

Thedonglethatyouuseisprogrammedtoworkonlythroughthelicensedtimeperiod,andwhenthattimehaselapsed,thedonglemustbeupdatedbeforeyoucancontinueusingCHEMCAD.

Updatingadongleisarelativelysimpleprocedure.Beforeyourlicenseexpiration,youoryoursoftwareadministratorshouldreceiveanemailfromChemstations,withwhatsknownasaconfigurationfileincludedasanattachment.YoushouldsavethisfiletoyourWindowsdesktopassoonasyoureceiveit.



Note:Ifyouveupdatedthesamedongleinthepast,thenewconfigurationfileshouldhavetheexactsamefilenameasthepreviousone.If,whilesavingthefiletoyourdesktop,youseeaWindowsmessageaboutanexistingfilewiththesamename,youshouldoverwritetheoldfile(whichinanycasecannotbeusedagain),replacingitwiththenewone.

Itsimportanttoensurethatyourconfigurationfilematchesyourdongle.Theconfigurationfileshouldbea.DNGfilewhosenameincludesafourorfivedigitcode;thiscodemustmatchthenumberstampedontoyourdongle.Ifthenumbersdontmatch,contactyoursoftwareadministratororChemstationssupporttoresolvetheissue.

Theupdateemailalsospecifiesthedateonwhichyoullneedtoupdateyourdongle.Beforethatdatearrives,followthisproceduretoperformtheupdate:

1. StarttheCHEMCADprogram;youshouldseetheLicenseSettingsdialogboxappearautomatically.Ifnecessary,youcanopenthisdialogboxusingeitherTools>Options>LicenseSettings(withasimulationopen)orLicense>LicenseSettings(withnosimulationopen).

2. WithintheLicenseSettingsdialogbox,clickthetabwiththesamenameasthetypeofhardwaredonglethatyouuse:SentinelScribe,NetSentinel,SuperPro,orSuperProNet.

3. Onthetabyouveselected,findtheReprogrambuttonReprogramSentinelSuperPro,forexample.Clickthisbuttontobeginthereprogrammingprocedure.

Figure 2-06: Re-programming a SuperPro dongle from the License Settings dialog box

4. WhentheBrowseforFolderdialogboxappears,navigatetothelocationwhereyousavedthe.DNGconfigurationfile.Normally,thisistheWindowsdesktop;ifyousavedyourconfigurationfilethere,clickDesktoptotellCHEMCADwheretolookforthefile,thenclickOK.



Figure 2-07: Selecting the location where the configuration file resides

5. CHEMCADreprogramsthedongleandthendisplaysasuccesspopupwindow.

Figure 2-08: Successful re-programming of a CHEMCAD dongle

6. ClickOKtoclosethepopupwindow.IftheLicensesinUsescreenappears,clickOKtocloseit.

YoushouldnowbeabletoopenCHEMCADandproceednormally.

Getting Help with CHEMCAD IfyoufindthatyouhavequestionsthatarenotaddressedinthisUserGuide,youcanturntoseveralresourcesforCHEMCADhelp.

Online Help AtanytimewhilerunningCHEMCADinanactivewindow,youcanpressthe[F1]keytobringuptheCHEMCADHelpscreenthatsmostappropriatetothetaskyouarecurrentlyperformingorthedialogboxcurrentlydisplayed.

Insomesituations,pressing[F1]willbringupthemainCHEMCAD6Helpwindowinsteadofaparticularhelpscreen.Fromthere,youcanclicktheContents,Index,orSearchtabintheupperleftcorneroftheCHEMCAD6Helpwindow,andusethesetoolstofindtheinformationyouneed.

YoucanalsogodirectlytothemainCHEMCAD6HelpwindowbyselectingHelp>HelpTopicsfromtheCHEMCADmainmenu.RegardlessofhowyouopenCHEMCADHelp,italwaysopensinaseparatewindowthatdoesnotinterferewiththeoperationoftheCHEMCADprogram.



CHEMCAD Coach TheCHEMCADCoachpaneisatoolthatyoucanopenwithinCHEMCADtoviewconciseinstructionsforcommonprocedures.Toseealistofavailabletopics,selectHelp>CHEMCADCoach.ThenclickonanylinkintheCHEMCADCoachwindowtoviewtheinstructionsforaspecifictask.

Procedure Demos AnimateddemonstrationsofcommontasksareavailabletohelpyougetstartedusingtheCHEMCADprogram.Topicscoveredincludethevariousstepsinvolvedincreatingabasicsimulation;proceduresforsimulationsinvolvingbatchreactors,heatexchangersizing,andpiping;controlvalveratingandsizing;creatinganExcelDataMap;andupdatingalicensingdongle.

ThedemofilesareinstalledalongwithCHEMCAD.Toaccessthesedemos,selectStart>AllPrograms>Chemstations>Demos,andthenbrowsethelistofavailabletopics.ClickthebuttonforthedemoyoudliketoviewandthenclickPlaytorunthedemo.

The Chemstations Web Site TofindthemostrecentupdatesoftheCHEMCADsoftware,manuals,andvarioustrainingtools,gotowww.chemstations.net.Thereyoullfindthefollowingitemsavailablefordownload:

ThelatestreleaseofCHEMCAD Alistofupdatesimplementedinthemostrecentrelease ThelatestversionofCHEMCAD6.0Help CHEMCAD6.0InteractiveDemos ProgrammingguidesforinterfacingwithCHEMCAD

Contacting Chemstations Technical Support Ifyouareunabletosolveaproblemorfindtheanswertoaquestionusingthismanualortheothertoolslistedhere,youcancontactChemstationstechnicalsupportstaffforassistance.

Ourtechnicalsupportengineersareavailableviaemail,orbyphoneMondaythroughFriday,7:00AMthrough6:00PMCentralStandardTime.

OutsideoftheUnitedStates,pleaseseewww.chemstations.comforregionalcontactinformation.

Phone: 713.978.7700

Toll-free (U.S. and Canada): 800.243.6223

FAX: 713.978.7727

E-mail: [email protected]


Chapter 3

The CHEMCAD Interface

WiththereleaseofVersion6.0,theCHEMCADinterfacehasundergonequiteatransformation.Forthisreason,evenlongtimeusersofCHEMCADwillbenefitfromareviewoftheprogramsscreenlayoutandthelocationofimportantfeatures.

ThischaptertakesyouonatouroftheCHEMCADscreen,includingthemenusandtoolbars,themainareasofthescreen,andtheflowsheetdrawingtools.Italsoshowsyousomewaysthatyoucancustomizethescreenlayoutsothatitbestsuitsyourownwayofworking.

The CHEMCAD Window WhenyoulaunchtheCHEMCADprogramforthefirsttime,youllseeascreenwithalargewhiteareainthemiddleandvariouspanes,orspecializedareas,attheedgesofthescreen.

Workspace CHEMCAD Explorer pane Palette pane Messages pane

TheCHEMCADInterface


The Workspace Theareainthemiddleofthescreenisknownastheworkspace.ThisisthemainfocusoftheCHEMCADwindow,theplacewhereyoullbuildandeditflowsheets,viewgraphs,andrunandtweakprocesssimulations.

WhenyoufirstlaunchCHEMCAD,theworkspaceissolidwhite.Whenyoustarttobuildaflowsheetoropenanexistingsimulation,theflowsheetdisplaysintheworkspace.

TheworkspaceusestabstoenableyoutoswitchbetweenyouropensimulationandanyopenExcelDataMapsand/ordataplots.Atthebottomoftheworkspacearea,youllseeoneormoretabswheneverasimulationisopen.EachtabincludesabuttonmarkedwithanX;tocloseanytab,firstclickthetabandthenclicktheXbutton.

Figure 3-01: The bottom of the workspace area, showing several tabs and their X buttons

Notethatanytimeyouveclosedasimulationandhaventyetopenedanotherone,theworkspacedisplaysasablankgrayspace.

The CHEMCAD Explorer Pane AlongtheleftedgeoftheCHEMCADwindow,youllseeanareawithatitlebaratthetopthatreadsCHEMCADExplorer.AtthebottomoftheCHEMCADExplorerpanearethreetabscalledRecentFiles,Simulation,andVisualBasic.Toviewthecontentsofatab,simplyclickitsname.

Figure 3-02: CHEMCAD Explorer tabs

TheCHEMCADExplorertabsarepresentedinwhatsknownasatreeformat,withitemsorganizedintoamultilevelhierarchy.Thedefaultviewshowsonlytoplevelitems,butyoucanexpandeachitemtoviewsecondlevelitems,thirdlevelitems,andsoforth.

Attheleftofeachtoplevelitemisasmallboxwithaplussign.Toexpandanitem,clicktheplussign.Twothingshappensimultaneouslywhenyouclick:thetreeexpandstoshowthatitemscontents,andtheplussignbecomesaminussign.Youcanhide(orcollapse)thelowerlevelitemsagainbyclickingtheminussign,whichthenturnsbackintoaplussign.Figure303showsanexampleofaCHEMCADExploreritemincollapsedandexpandedview.

TheCHEMCADInterface


Figure 3-03: Clicking the plus sign to expand an item (left); the resulting view (right)

ExpandingandcollapsingitemsintheCHEMCADExplorertabsisonewaythatyoucanmakethebestuseofyourscreenspacewhenworkinginCHEMCAD.

The Recent Files Tab TheRecentFilestabisselectedbydefaultwhenyoufirstlaunchCHEMCAD.Thistablistsallofthesimulationfilesthatyouhaveopenedlately,startingwiththemostrecent.WhenyoufirstinstallCHEMCAD,thelistisempty,butwitheverysimulationthatyouopennewfilesorexistingonessuchasbuiltinexamplesthelistwillgrow,providingconvenientaccesstofilesthatyouusefrequently.

ToopenasimulationfromtheRecentFileslist,simplydoubleclickonthefilenameinthelist.

The Simulation Tab TheSimulationtabdisplaysbydefaultanytimeasimulationisopen.Itprovidesaseriesofshortcutstocommoncommandsandsettings,including:

Components:Includesoneclickaccesstocomponent,electrolyte,andsolidsselection,aswellasdistillationcurves

Thermodynamics:Providesquickaccesstothermodynamicsettingsandtransportproperties

Flowsheet:AllowsquickeditingofUnitOpandstreamdata DataMaps:EnablesyoutocreateorsetexecutionrulesforaDataMap

withoutusingthemenu

TheCHEMCADInterface


Groups:ProvidesaneasywaytocategorizeUnitOps,streams,andcomponents

Layers:Allowsselectedpartsoftheflowsheettobedisplayedorhiddenforviewingandprinting

Templates:StoresandorganizesstreamandUnitOpspecificationsthatyoucancloneforreuse

Expandanyoftheseitemstoseeandusespecificfeatures,whicharedescribedinfurtherdetailintheappropriatechaptersofthisuserguide.

The Visual Basic Tab IfyouuseVisualBasictocustomizeCHEMCAD,thistabprovidesquickandeasyaccesstoyourVisualBasiccode.YoucanexpandtheReactions,Properties,orUnitOpsitemtoviewavailablesubroutinesforthatcategory.ClickingthenameofasubroutineopensaVisualBasiceditorinaseparatewindow.

The Palette Pane AlongtherightsideoftheCHEMCADwindowisapanetitledPalette,whichisarepositoryforthevariousunitoperationiconsandothertoolsneededtodrawflowsheets.

Selecting a Palette TheseUnitOpiconsandtoolsaregroupedintopalettesaccordingtofunctionorequipmenttype.ThedefaultpaletteiscalledAllUnitOps,anditincludeseveryavailableUnitOpiconanddrawingtool.Toselectadifferentpalette,simplyclickitstitlebar.Theselectedpaletteexpandsinplace,asshowninFigure304.

Figure 3-04: The expanded Piping and Flow palette

TheCHEMCADInterface


Customizing Palettes AtthetopofthePalettepaneisafieldcalledSearchforUnitOp(s).TypeasearchtermhereandthenclickGo!tolocatealloftheUnitOpiconsassociatedwiththatterm.TheresultsfromthesearchappearinanewpaletteatthebottomofthePalettepane.Figure305showsthesearchresultsforthewordvessel.

Figure 3-05: Search results showing all vessel UnitOps

PerformingaUnitOpsearchcreateswhatisknownasauseraddedpalette.Thistypeofpaletteisdesignatedwithaspecialiconattheleftendofthepaletteheading.

ThepalettecontainingyoursearchresultsremainsavailableuntilyoucloseCHEMCAD.YoucanmakeyouruseraddedpaletteavailablepermanentlybyrightclickingthenewpalettestitlebarandselectingSave.

Figure 3-06: Saving search results for future use

TheCHEMCADInterface


Youcandothefollowingwithuseraddedpalettes:

RenameanyuseraddedpalettebyrightclickingitstitlebarandselectingRename.Intheresultingdialogbox,typethenameyouwantandthenclickOK.

DeleteauseraddedpaletteatanytimebyrightclickingandselectingRemove.

AddindividualUnitOpsortoolstoanexistinguseraddedpalette.Simplyrightclicktheiconfortheitemyouwanttoadd,selectInsertintoPalette,andthenclickthenameoftheuseraddedpalette.

RemoveanitemfromauseraddedpalettebyrightclickingtheiconandselectingRemovefromPalette.

Createauseraddedpalettewithoutasearch.RightclickthefirsticonthatyoudliketoincludeonanewpaletteandselectInsertintoPalette>NewPalette.TypeanameintheresultingdialogboxandclickOK.Thenaddasmanyothericonsasyoudlikeusingthemethoddescribedjustabove.

Youcannotchangethenameoriconselectionforabuiltinpalette,asyoucanwithauseraddedpalette.Youcan,however,makeacopyofabuiltinpalette,renamethecopy,andthenaddanddeleteiconsuntilthepalettehasjustwhatyouwant.

Tocopyanypalette(whetherbuiltinoruseradded),simplyrightclickthepaletteheadingandselectSaveCopyAs.TypeanameforthenewpaletteandclickOK.

The Messages Pane TheMessagespaneislocatedatthebottomedgeoftheCHEMCADworkspace.Atthebottomofthispanearethreetabs:ErrorsandWarnings,RunTrace,andNotes.

The Errors and Warnings Tab Thistabdisplaysarunninglistoferrorandwarningmessagesthathavebeengeneratedwhilethecurrentsimulationfilehasbeenopen.Theoldestmessagesdisplayatthetopofthelist.Whentherearetoomanycumulativemessagestodisplayinthepane,themostrecentmessagesdisplayandtheoldermessagesscrolloffthetopedgeofthepane.Ifneeded,youcanusetheverticalscrollbarontherightsideofthepanetoscrollupandreviewearliermessages.

The Run Trace Tab ThistabdisplaysdiagnosticmessagesfromeachUnitOpeachtimeasimulationisrun.Thisinformationishelpfulintroubleshootingasimulationthatisnotworkingproperly.

ThetextontheRunTracetabisnotsavedwiththesimulation,butrefresheswitheachrunandclearswhenyouclosethesimulation.

TheCHEMCADInterface


The Notes Tab Thistabprovidesahandyplacetostoreadditionalinformation,intextform,aboutthesimulation.Youcanuseittolistanydetailsaboutthesimulation,suchasitsoriginandanyassumptionsthatarebeingmade.

Anynotesthatyouaddorchangearesavedaspartofthesimulation.Todeletetextfromanote,simplyclickanddragtoselectthetextandthenpress[DELETE]onyourkeyboard.

The Main Menu ThemainCHEMCADmenuislocatedjustunderthetitlebaratthetopoftheprogramwindow.SomeitemsonthemainmenuarecommontonearlyallWindowsprogramsnamelyFile,Edit,Format,andHelpwhileothermenuitemssuchasThermophysicalandSizingaremorespecifictochemicalprocesssimulation.

Touseamenucommand,clicktherelevantmainmenuitemandthenclickthecommandinthedropdownlistthatappears.

Toexecutemenucommandswithoutusingthemouse,youcanholddownthe[ALT]keyonyourkeyboardasyoupresstheletterkeythatcorrespondstotheunderlinedletterinthedesiredmenuitem,forexample[ALTF]fortheFilemenu.Youcanthenusetheupanddownarrowkeystoselectanitemonthemenuandpress[ENTER]toexecutetheselectedcommand.

The Toolbar TheCHEMCADtoolbarprovidesbuttonsthatarecommontomostWindowsapplications,suchasNew,Open,Save,andPrint,alongwithbuttonsthatarespecifictochemicalprocesssimulation.

Todiscovertheuseofaparticularbutton,simplypointyourmousecursoratthebuttonandwatchforthetooltiptoappear,asshowninFigure307.

Figure 3-07: Viewing a buttons tooltip

Toolbarbuttonsprovidequick,oneclickaccesstofrequentlyusedcommandsthatarealsoavailableviatheCHEMCADmenus.

Customizing the CHEMCAD Screen WhenyoufirstinstallCHEMCAD,thescreenislaidoutwiththeCHEMCADExplorerpaneontheleft,thePalettepaneontheright,andtheMessagespanebelowtheworkspace.

TheCHEMCADInterface


Ifhavingalloftheseitemsvisibleleavesyoulessworkspacethanyouwouldprefer,orifthelocationofoneormorepanesislessthanoptimalforthewaythatyouwork,youcanhideormovepanestocustomizeyourCHEMCADscreen.

Viewing and Hiding Screen Elements YoucanvieworhideanyoftheCHEMCADscreenspanes,aswellasgroupsoftoolbarbuttons,tomakeoptimaluseofyourscreenspace.

Totoggleapaneonoroff,selecttheViewmenuandthenchooseCHEMCADExplorer,Palette,orMessages.Itemswithacheckmarkarecurrentlydisplayed,whileitemswithnocheckmarkarecurrentlyhidden.YoucanalsochoosetovieworhidethestatusbaratthebottomoftheCHEMCADwindow.

Toselectivelyvieworhidegroupsoftoolbarbuttons,selectView>Toolbars.IntheToolbarsdialogbox,eachgroupofbuttonsislistedunderadescriptivename;initially,allofthesegroupshavecheckmarks,indicatingthattheyarecurrentlydisplayed.Tohideanygroupofbuttons,clicktoremovethecheckmarkandthenclickClosetoreturntothemainCHEMCADwindow.

Resizing and Moving Items Nowthatyouhavedeterminedwhichpanesandtoolbarbuttongroupstodisplay,youcanfurthercustomizeyourCHEMCADwindowtodetermineexactlywhereeachoftheseitemswillappear.

Resizing a Pane Thesimplestwaytoaltertheappearanceofapaneistoresizeit.YoucanmaketheCHEMCADExplorerandPalettepaneswiderornarrower,ormaketheMessagespaneshorterortaller,bymovingtheinsideedge,orwall,ofthepanetowardorawayfromtheedgeofthemainwindow.

Toresizeapane,startbypositioningyourmousecursorattheinsidewallofthepanethatis,therightedgeoftheCHEMCADExplorerpane,theleftedgeofthePalettepane,orthetopedgeoftheMessagespane.Whenthecursorisinthecorrectpositionforresizing,thenormalpointerwillbereplacedwithatwoheadedarrowasshowninFigure308.

Figure 3-08: The two-headed arrow cursor used for resizing panes

TheCHEMCADInterface


Whenyouseethetwoheadedarrow,clickanddraginthedirectionyouwanttomovethepanewall.Athickgraylineshowsapreviewofthenewpanesize;whenyoureleasethemousebutton,theresizedpaneappears.

Moving a Pane Inadditiontoresizing,youcanalsomoveanyofthepanesintheCHEMCADwindow,eithertoadifferentedgeofthescreenortothemiddleofthescreen.Youcanalsomovegroupsofbuttonsfromtheirdefaultpositionsonthetoolbar.

Initially,allofthepanesandbuttongroupsaredocked,meaningthattheyaresnappedintoanedgeofthescreenorthetoolbararea.Whenyouundockanitem,youcanputitinthelocationofyourchoosing,awayfromthescreenedge.

Toundockapane,clickanddragthepanestitlebar,thatis,thebluebaratthetopofthepanethatshowsthepanename.Toundockabuttongroup,youllneedtoclickanddragtherowoffourdotsrunningalongtheleftedgeoftheleftmostbuttoninthegroup.

Note:InthecaseoftheMessagespane,thetitlebarrunsalongtheleftedgeofthepane,andthenameisnotvisiblewhenthepaneisdocked.

Ifyoudragthepaneorbuttongroupintotheworkspacearea,youllseeagrayboxrepresentingthepositiontheitemwilloccupywhenyoureleasethemousebutton.Ifyoudontlikethenewposition,youcanclicktheitemstitlebaranddragitelsewhere,includingitsoriginalposition.

Youcanalsodockapanetoadifferentedgeofthescreen,ormovebuttongroupsaroundwithinthetoolbararea,insteadofundockingtheseitems.

Pinning and Unpinning Panes Inadditiontomovingandresizingthevariouspanes,theresanotherwaythatyoucancustomizeyourCHEMCADscreen:pinningandunpinningtheCHEMCADExplorerandPalettepanes.

Thesetwopanescantakeupafairamountofhorizontalscreenspace,andmakingthemverynarrowisntanidealwaytowork.PinningandunpinningprovideawaytoviewfullwidthCHEMCADExplorerandPalettepaneswhenyouneedthesetools,whilealsofreeingupspacewhenyouarentusingthem.

Whenevereitherofthesepanesisdockedatanedgeofthescreen,itisinoneoftwostates:

Pinned,meaningthatthepaneisalwaysvisible Unpinned,meaningthatthepaneismostlyhiddenfromview,andappearsonly

ondemand

Bydefault,allCHEMCADpanesareinitiallypinnedinplace.Youcanchoosetounpinapaneifyouprefertohavesomeextraspaceonthescreen.Tounpinapane,

TheCHEMCADInterface


findthetinypushpiniconinthepanestitlebar,nexttotheXiconthatenablesyoutoclosethepane.Ifthepaneisstationary,youllseethatthepinisuprightwithitspointdown.

Figure 3-09: The icon indicating a pinned, or stationary, pane

Ifyouclickthepinicon,thepanesuddenlydisappearsfromviewbutitisntgone.Instead,asmallgraytabbearingthenameofthepaletteappearsattheedgeofthescreenwherethepaneisdocked.Toseethepanereappear,youonlyhavetorollyourmouseoverthattab.Whenthepaneappears,youllnoticethatthepushpiniconisnowpointedtotheside.UsethetoolsontheCHEMCADExplorerorPalettenormally;then,whenyounolongerneedthepane,justmovethemousepointerelsewhere.Thepanewillautomaticallyhideitselfuntilthenexttimeyourollthemouseoverthetab.

Figure 3-10: An unpinned pane in use; note the sideways pin icon

Torepinanunpinnedpane,pointtothetabtomakethepaneappearandthenclickthepinicon.Thepinturnssothatitisonceagainupright,andthepaneisonceagainapermanentfixtureontheCHEMCADscreen.

Other Useful Interface Hints ThefollowingarehelpfulitemsthatcanhelptomakeyourCHEMCADexperienceeasierandmoreefficient.

Undo and Redo AswithmostWindowsbasedprograms,CHEMCADallowsyoutobackoutofactionsyouhavejusttakenwhileworkingwithafile.YoucanusetheUndocommandtonegatethelastchangeyoumade;simplyselectEdit>Undo,orusethekeycombination[CTRLZ].

YoucanusetheUndocommandtoretractuptothelast99actionsthatyouperformedsincethelasttimeyouopenedthecurrentsimulationfile.

Visible Grid Youcanturnonaworkspacegridtouseasaguidewhilecreatingyourflowsheet.SelectView>GridVisibletotogglethisfeatureonoroff.

TheCHEMCADInterface


OthergridoptionsincludeView>SnaptoGrid,whichhelpswithalignmentofobjectsontheflowsheet,andView>ChangeGridSize,whichenablesyoutocustomizethehorizontalandverticalspacingofgridlines.

Adjusting Your View of the Workspace TheView>ZoomOptionsmenuoffersawholeseriesofoptionsformovingandresizingyourviewoftheCHEMCADworkspace.

SelectIntoviewtheworkspacefromcloserin,orOuttoviewfromfartheraway. SelecteitherInataPointorOutataPoint,andthenclickapointonthe

workspace,tozoominoroutwiththatpointasafocus.

SelectZoomRectangle,andthenclickanddragontheworkspace,todesignateaspecificareathatyouwanttoview.

SelectZoomPercentagetochooseaspecificdisplaysizefortheworkspace. SelectZoomtoFittoviewatthelargestsizethatstillpermitsalloftheexisting

flowsheetelementstoremaininthevisibleworkspace.

Ifyourcomputermouseisequippedwithascrollwheelbetweentheleftandrightmousebuttons,youcanzoominandoutontheCHEMCADworkspacewithatouchofyourfinger.Tozoomin,rollthewheelupthatis,pushyourfingertipaway,towardthetopedgeofthemouse.Tozoomout,rollthewheeldowntowardthebottomofyourmouse,pullingyourfingertiptowardyourpalm.

Note:Whenyouzoominandoutusingthescrollwheel,thefocalpointforthezoomisthelocationofthemousepointer.

The CHEMCAD Coach Pane TheCHEMCADCoachpaneisnotdisplayedbydefault,butyoucanaccessitatanytimebyselectingHelp>CHEMCADCoach.ThepurposeofCHEMCADCoachistoprovideconciseinstructionsforcommonprocedures.IfyouvelearnedhowtoperformacommonprocedureinCHEMCADbuthaveforgottentheexactmenucommandtouse,CHEMCADCoachcanhelpjogyourmemoryandputyouontherighttrack.

YoucandragtheCHEMCADCoachwindowtoanylocationonthescreen,simplybyclickinganddraggingthetitlebaratthetopofthewindow.

IfyouhavefinishedusingtheCHEMCADCoachtoolandwanttocloseit,justclicktheClosebutton(theredX)intheupperrightcorneroftheCHEMCADCoachwindow.NotethatifthemainCHEMCADwindowwasmaximizedbeforeyouopenedtheCHEMCADCoachtool,youmayneedtomaximizetheCHEMCADwindowagaintorestoreittofullscreensize.

TheCHEMCADInterface



Chapter 4

Working with Simulation Files

AlloftheworkthatyoudowithCHEMCADisstoredinsimulationfiles.WiththeadventofCHEMCAD6,eachdiscretesimulationispackagedintoasinglefilethatisportableandeasytohandle.AllthedetailsofthesimulationfromUnitOpspecificationstostreamcompositiontothermodynamicsareincludedinthisfile.ThischapterdescribesthevariouswaysthatyoucanaccessandmanageCHEMCADsimulationfiles.

About CHEMCAD Simulation Files SimulationscreatedinCHEMCAD6usethefileextension.CC6,whichdistinguishesthemfromotherfilesonyourcomputer,includingsimulationfilescreatedusingearlierversionsofCHEMCAD.

Oneofthemostnotabledifferencesbetween.CC6filesandpredecessorssuchas.CCXfilesistheirportability.A.CC6simulationfileisaseasytoworkwith,transport,andshareasanMSWorddocumentoranExcelspreadsheet.WhereasCHEMCADsimulationsoncerequiredextrastepsbeforetheycouldbeemailedormoved,simulationscreatedwithCHEMCAD6canbehandledasstandalonefiles.

WorkingwithSimulationFiles


Figure 4-01: Stand-alone CHEMCAD 6 files in the My Simulations directory

User Components in CHEMCAD AnotherdeparturefrompreviousversionsofCHEMCADisthatsimulationsarenowselfcontainedwithrespecttothedataneededtorunthem.Allcustomcomponentsthatyoucreatearestoredinadatabasesothatyoucanusetheminmanydifferentsimulations.Usercomponentsarealsostoredwithinthesimulationsthatusethem,soyounolongerhavetoworryaboutlosingusercomponentswhenmovingasimulationfromplacetoplace.

Eachtimeyouopenasimulation,CHEMCADcomparesanyusercomponentsinthesimulationwiththecopiesofthosesamecomponentsinthedatabase.Ifthetwocopiesdonotmatch,youwillbeofferedachoice:youcankeepusingthelocalcopystoredinthesimulation,orusetheupdatedcopyfromthedatabase.

YourcopyofCHEMCADcannowhavemultipleuserdatabases,andevensharethemonnetworkswithotherusers.Tolearnmoreaboutusercomponentsandbestpracticesformanagingandsecuringusercomponentdatabases,seeChapter10,CustomizingCHEMCAD.

Example Files EspeciallyifyourenewtoCHEMCAD,itsagoodideatoopenandpracticeworkingwithsomeexamplefilesbeforecreatingyourownsimulations.Forthispurpose,wevecreatednumerousexamplesofsimulationsfortypicalchemicalprocesses.Youcanopen,view,andeditanyexamplefile,andevensaveacopyinanotherlocationtojumpstartasimulationofyourown.

TheCHEMCADexamplefilesareautomaticallycopiedtoyourcomputerwithacompleteCHEMCADinstallation.Theexamplesareorganizedbyprocesstypeandlocatedinthe\MyDocuments\MySimulations\Examplesdirectory.

WorkingwithSimulationFiles


Opening an Existing Simulation SelectFile>OpentobringuptheOpendialogbox.Navigatetothefolderwherethesimulationislocated,selecttheappropriate.CC6file,andclickOpen.

IfyouuseCHEMCADonanetworkandsharefileswithotherusers,itspossiblethatyoucouldtrytoopenasimulationthatisalreadyopenforeditingbyanotheruser.Ifyoushouldattempttoopenasimulationthatisunavailableforediting,amessageboxwillappear.Youcanchoosetosavethesimulationwithanewnameand/orlocation,openareadonlycopyofthesimulation,orcanceltheopenoperation.

Figure 4-02: Notification that a simulation is already in use

Ifyoushouldhavetroublelocatingaparticula

chemcad 6 user guide - online

Documents

ccsteady state

ccsafety net