chemcad_lecture

8/7/2019 ChemCad_Lecture

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ChemCad – In medias resPossible to view with grid.

Accomplished from the

View-menu

How to use ChemCad

Menu overview:

STEP 1::

The Format menu: Choosing

engineering units: English units,

SI, metric, etc…



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STEP 2:

The Mode menu: Flowsheeting

or Simulating

When creating your first

project, choose flowsheet

STEP 3:

Click and drag to create the desired process. Red arrow = Feed, Purple = Product

STEP 4:

Create a component list.

First choose Simulation from the Mode menu, then Component List from the

ThermoPhysical menu. Find and add the desired components.

STEP 5:

Thermodynamics and ChemCad

Use the K-value wizard to help determine suitable physical-chemical data.

Choose K-value wizard from the ThermoPhysical menu.



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STEP 6: Running the Show

First define feed-stream and unit operation’s performance, then run.



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STEP 7: Rigorous Calculations

Now we have completed short-cut calculations, this is what can be done

by hand. Rigorous calculations give you more accurate results. We base

them on the results we g ot from the short-cut runs.

Start by extending the flowsheet with the rigorous towers.

STEP 8: Define Streams and Convergence Parameters



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STEP 9: Repeat for second column and run

If reasonable indata is provided, columns will converge and you can view the

calculated results by right-clicking the column and choosing Edit Unit Op Data.



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STEP 10: Presenting Results in ChemCad

ChemCad offers many possibilities for presenting results.

Results can be presented as figures or plots.

Interesting

Choices

Interesting Plots

Example, Tower Profiles STEP 11: Sizing of Equipment



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Leave blank for

ChemCad to calculate



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STEP 12: Cost Estimation



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STEP 13: Run again!

chemcad_lecture

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