Designer:Dalal AlDughaishem

Supervised by: Prof.M.Fahim

Eng.Yusuf Ismail

• Pump .

• Vertical Separator.

• Distillation column.

outlines

Pump Centrifugal

Pump is a machine used for moving a liquid from lower to higher pressure and overcoming this difference by adding energy to the system.

Procedures

• Calculate Break horse power.

Where

BHP =is the break horsepower of the pump in watt

Q= flow rate in m3/s

H= the static head of the pump in m.

ρ= the density of the fluid kg/m3

• Calculate the horse power

• Calculate the efficiency and compare it with the assumed efficiency.

powerinput

poweroutputefficiency

%,

3960

.** gsHQHP

HgQBHB ***

g

ppH inout

*

1000*)(

m

Q

•Calculate the pipe diameter for the discharge.

Where,∆P is the pressure difference between the inlet and outlet streams in kpa

G: flow rate kg/sρ: the density of the fluid kg/m3μ: viscosity cpD: pipe diameter mm

•Calculate the cost of the pump.

84.4116.084.11013.4 dGEp

Equipment NamePump

ObjectiveTo increase liquid pressure

Equipment Number100

DesignerDalal Aldughaishem

TypeCenrifugal Pump

LocationAmine process

Material of ConstructionCast Iron

InsulationQuartz Wool , Glass Wool

Cost5900$

Operating Condition

Inlet Temperature (oC)33Outlet Temperature (oC)34.645

Inlet Pressure (psia)2Outlet Pressure (psia)48

Efficiency (%)75%Power (Hp)1200

feed

Vapour

Liquid

Dv/2

Liquid level

Dv

0.4m

SeparatorSeparators are mechanical devices for removing and collecting liquids from natural gas .

1) Calculate the settling velocity.

2) Calculate vapor volumetric flowrate.

3) Calculate liquid volumetric flowrate.

4) Determine the volume held in vessel using the above information's.

5) Then calculate the minimum vessel diameter.

Procedures

5.0)(07.0v

vlUt

V

VV

MV

*3600

LV

MlL

*3600

60**TLVVHV

5.0)*14.3

*4(

S

VV U

VD

6) Calculate the liquid depth.

7) Determine the thickness of the wall.

Where:

TH: thickness (in)

P: internal pressure (psig)

RI: internal radius of shell (in)

Ej: efficiency

S: working stress (psi) =13700 for Carbon Steel

Cc: allowance for corrosion (in)

8) Calculate the length of the vessel.

)4*14.3

(2DV

VHVHV

224.0

2VV

VV DD

HVDD

H

CcPEJS

RIpTH

*6.0*

*

9) Then calculate the volume of metal using the difference between volumes using inside and outlet diameters.

10) Calculate the weight of the metal.

11) Calculate the cost.

hVDDV 2)*

4

14.3(h

oDDo 2)*4

14.3(

*VmWm

Equipment Nameseparator

ObjectiveTO separate H2O from the other gases

Equipment NumberV-101

DesignerDalal AlDughaishem

TypeVertical

Locationamine process

Material of ConstructionCarbon Steel

InsulationGlass wall and quartz

Cost ($)820,800

Operating Condition

Operating Temperature (oC)25Operating Pressure

(psig)14.7

Design Considerations

Liquid Density (kg/m3)996.59Gas Density (kg/m3)1.236

Viscosity (cp)0.63237Z factor0.998

Gas Flow rate (MMSCFD)121.6Liquid Flow rate (MMSCFD)12.8

Dimensions

Diameter (m)4.1923Height (m)11.022

Equipment NameSeparator

ObjectiveTO separate the remaining H2O from the other

gases

Equipment NumberV-102

DesignerDalal AlDughaishem

TypeVertical

Locationamine process

Material of ConstructionCarbon Steel

InsulationGlass wall and quartz

Cost ($)830,000

Operating Condition

Operating Temperature (oC)30Operating Pressure (psig)734.8

Design Considerations

Liquid Density (kg/m3)995.430Gas Density (kg/m3)63.854

Viscosity (cp)0.63237Z factor0.9628

Gas Flow rate (MMSCFD)118Liquid Flow rate (MMSCFD)3.655

Dimensions

Diameter (m)4.983Height (m)12.886

Equipment Nameseparator

ObjectiveTO separate N2 from the other gases

Equipment NumberV-103

DesignerDalal AlDughaishem

TypeVertical

Locationamine process

Material of ConstructionCarbon Steel

InsulationGlass wall and quartz

Cost ($)10300

Operating Condition

Operating Temperature (oC)59.3Operating Pressure (psig)44.09

Design Considerations

Liquid Density (kg/m3)1067.700Gas Density (kg/m3)3.174

Viscosity (cp)0.63237Z factor0.99847

Gas Flow rate (MMSCFD)0.2335Liquid Flow rate (MMSCFD)607.33

Dimensions

Diameter (m)0.441Height (m)7.773

Distillation column

• Specify the properties of outlets streams: (flow rate, density and surface tension) for both vapor and liquid from HYSYS.

• Column Diameter.

WhereFLv: liquid-vapor flow factorLw: liquid flow rate, kmol/hrρL: liquid density,kg/m3Vw: vapor flow rate, kmol/hrρv :vapor density, kg/m3

Procedures

5.0)(*l

v

VW

LWFLV

• Choose tray spacing and then determine K1 and K2 .

• Calculate correction factor for Bottom K1 and Top K1.

• Design for X% flooding at maximum flow rate for top and bottom part of distillation.

Where

uv: maximum velocity, m/s.

x: percentage of flooding at max flowrate.

kSR

K *02.0

1

5.0)(1v

vlKUf

XUFUV *

• Calculate the maximum flow rates of liquid.

Where

Max.: Maximum Volumetric Flow rate.

Lw: liquid flow rate, kmol/hr

ρL: liquid density, kg/m3

M.wt: molecular weight, kg/ kmol

3600*

*

l

MLMl WtW

• Calculate Net area required.

Where

Anet: Net area required, m2

M max = max Volumetric Flow rate

uv: maximum velocity, m/s.

• Take down comer area.

• Calculate the column diameter.

Uv

MAnet

max

210*1

y

AnAd

14.3

4Ad

D

• Calculate the column height using the actual number of stage.

• Calculate column area, down comer area, active area, net area, hole area and weir length.

Where

Ac: column area, m2

Aa: active area, m2

Ah: hole area, m2

AdAcAa

AdAcAn

AcAd

DAc

2

12.0

10**4

14.3 2

H= (Tray spacing * actual NO. stage ) + D

• Check weeping

Where:

max Lw: maximum liquid rate, (kg/s).

min Lw : minimum liquid rate, (kg/s).

max how: mm liquid.

min how : mm liquid.

3600*)( Wt

WW

MLLMax

)3

750*2(

*

)()(

wierlengthL

LMaxhowMax W

)3

750*2(

*

)()(

wierlengthL

LMinhowMin W

AdchthowhwRatehb

Aapl

lowrateMaxliquidfhdc

hapwierlengthAap

mmhwHap

)(min

)*

(*166

*

)(10

2

•Calculate Back-up in down comer.

• Check residence time.

• Calculate number of holes.

• Calculate area of condenser and reboiler.

Wherem: mass flowrate (kg/h)cp: mass heat capacityU: overall heat transfer coefficient

• Calculate Thickness of the distillation.

flowmassliquid

hAdtr L

U

CPMA

*

CcPSE

priThickness

*6.0*

*

510*964.1 Ah

NHole

Equipment NameDistillation column

ObjectiveTo separate the water from the other gases

Equipment NumberT-100

DesignerDalal Al-Dughaishem

TypeContinuous Distillation column

LocationPropylene process

Material of ConstructionCarbon steel

Insulationminral wool and glass fiber

Cost ($)90500 $

Column Flow Rates

Feed (kgmole/hr)2936Recycle (kgmole/hr)9262.9

Distillate (kgmole/hr)1992.3Bottoms (kgmole/hr)943.71

Key Components

LightpropaneHeavyH2O

Dimensions

Diameter (m)1.8Height (m)6.18

Number of Trays10Reflux Ratio4.65

Tray Spacing0.5Type of traySieve trays

Number of Holes4258.38034

Cost

Vessel10600 $Trays700 $

Condenser Unit62600Reboiler16600

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