DWSIM/C3/Absorption-Column/English

Visulal Cue	Narration
Slide Number 1 Title Slide	Welcome to this tutorial on simulating an Absorption Column using CAPE-OPEN Unit Operation in DWSIM.
Slide Number 2 Learning Objective	In this tutorial, we will learn to: Simulate an Absorption Column Use ChemSep column as CAPE-OPEN Unit Operation Specify Thermodynamics in ChemSep column Specify Pressure profiles & Method in ChemSep column
Slide Number 3 System Requirements	To record this tutorial, I am using DWSIM 5.2 (Classic UI) and Windows 10 The process demonstrated in this tutorial is identical in other OS also such as- Linux Mac OS X or FOSSEE OS on ARM.
Slide Number 4 Pre-requisites	To practice this tutorial, you should know to add components to a flowsheet select thermodynamic packages add material streams and specify their properties
Slide Number 5 Prerequisite Tutorials and Files	The prerequisite tutorials are mentioned on our website, spoken-tutorial.org You can access these tutorials and all the associated files from this site.
Slide Number 6 Package and Inlet Condition Inlet Stream: Absorbent Oil Mass Flow: 12750 kg/h Mole Fraction(CH4): 0 Mole Fraction(C2H6): 0 Mole Fraction(C3H8): 0 Mole Fraction(C4H10): 0 Mole Fraction(C5H12): 0 Mole Fraction(C12H26): 1 Temperature: 32 degree C Pressure: 28 bar Feed Gas Mass Flow: 11840 kg/h Mole Fraction(CH4): 0.2 Mole Fraction(C2H6): 0.4625 Mole Fraction(C3H8): 0.3 Mole Fraction(C4H10): 0.0315 Mole Fraction(C5H12): 0.00625 Mole Fraction(C12H26): 0 Temperature: 41 degree C Pressure: 28 bar Property Package: Peng-Robinson	We will develop a flowsheet to determine Outlet stream properties after absorption. Here we give compounds, inlet stream conditions and property package.
	I have already opened DWSIM on my machine.
File >> New Steady-state Simulation	Go to File menu and select New Steady-state Simulation.
Point to Simulation Configuration Wizard window	The Simulation Configuration Wizard window appears.
Click on Next.	At the bottom, click on Next.
Type Methane in the Search tab	Now, in the Compounds search tab, type Methane.
ChemSep database >> Methane	Select Methane from ChemSep database.
Type Ethane in the Search tab	Next, add Ethane.
Type Propane in the Search tab	Similarly, add Propane.
Type N-Butane in the Search tab	Next, add N-Butane.
Type N-Pentane in the Search tab	Next, add N-Pentane.
Type N-dodecane in the Search tab	Next, add N-dodecane.
At the bottom, Click on Next.	At the bottom, Click on Next button.
Point to Property Packages	Now comes Property Packages.
Property Packages >> Available Property Package Double click on Peng-Robinson	From Available Property Package list, double-click on Peng-Robinson.
At the bottom, Click on Next button.	At the bottom, Click on Next button.
Point to Flash Algorithm	We are moved to Flash Algorithm.
Default Flash Algorithm >> Nested Loops (VLE)	From Default Flash Algorithm, select Nested Loops(VLE)
At the bottom, Click on Next button.	At the bottom, Click on Next button.
Point to System of Units	Next option is System of Units.
System of Units >> C5	Under System of Units, select C5.
Click on Finish	Lastly, at the bottom, click on the Finish button.
click on maximize button.	Let us maximize the simulation window.
Go to Object Palette	Now let’s insert a feed stream that enters the Absorption Column.
Point to Flowsheet Objects.	On the right hand side of the main simulation window, go to Flowsheet Objects.
In the Filter List tab, type Material Stream	In the Filter List tab, type Material Stream.
Click and drag Material Stream to the flowsheet	From the displayed list, drag and drop a Material Stream to the Flowsheet.
Click on MSTR-000	Click on the Material Stream “MSTR-000” to view its properties.
Type Absorbent Oil	Let’s change the name of this stream to Absorbent Oil.
	Now we will specify the Absorbent Oil stream properties.
Input Data >> Flash Spec >> Temperature and Pressure (TP)	Select Flash Spec as Temperature and Pressure (TP), if not already selected. By default, Temperature and Pressure are already selected as Flash Spec.
Input Data >> Temperature >> 32 degC Press Enter	Change Temperature to 32 degC and press Enter.
Input Data >> Pressure >> 28 bar Press Enter	Change Pressure to 28 bar and press Enter.
Input Data >> Mass Flow >> 12750 kg/h Press Enter	Change Mass Flow to 12750 kg/h and press Enter.
	Now let us specify the feed stream compositions.
Composition>>Basis >> Mole Fractions	Under Composition, choose the Basis as Mole Fractions, if not already selected. By default, Mole Fractions is already selected as Basis.
Methane: 0	Now for Methane, enter the Amount as 0 and press Enter.
Ethane: 0	For Ethane, enter it as 0 and press Enter.
Propane: 0	Similarly, for Propane, enter 0 and press Enter.
N-Butane: 0	And for N-Butane, enter 0 and press Enter.
N-Pentane: 0	Next, for N-Pentane, enter 0 and press Enter.
N-dodecane: 1	For N-dodecane, enter 1 and press Enter.
Click Accept Changes	On the right, click on this green tick to Accept Changes.
	Now drag and drop another Material Stream to the flowsheet.
Click on MSTR-001	Click on Material Stream “MSTR-001” to view its properties.
Type Feed Gas	Let’s change the name of this stream to Feed Gas.
	Now we will specify the Feed Gas stream properties.
Input Data>>Flash Spec>>Temperature and Pressure(TP)	Under Input Data, select Flash Spec as Temperature and Pressure (TP), if not already selected. By default, Temperature and Pressure are already selected as Flash Spec.
Input Data >> Temperature >> 41 degree C Press Enter	Change Temperature to 41 degree C and press Enter.
Input Data >> Pressure >> 28 bar Press Enter	Change Pressure to 28 bar and press Enter.
Input Data >> Mass Flow >> 11840 kg/h Press Enter	Change Mass Flow to 11840 kg/h and press Enter.
	Now let us specify the feed stream compositions.
Composition>>Basis >> Mole Fractions	Under Composition, choose the Basis as Mole Fractions, if not already selected. By default, Mole Fractions is already selected as Basis.
Methane: 0.2	Now for Methane, enter the Amount as 0.2 and press Enter.
Ethane: 0.4625	For Ethane, enter it as 0.4625 and press Enter.
Propane: 0.3	Similarly, for Propane, enter 0.3 and press Enter.
N-Butane: 0.03125	And for N-Butane, enter 0.03125 and press Enter.
N-Pentane: 0.00625	Next, for N-Pentane, enter 0.00625 and press Enter.
N-dodecane: 0	For N-dodecane, enter 0 and press Enter.
Click Accept Changes	On the right, click on this green tick to Accept Changes.
	Now let’s insert two more material streams that exit the Absorption Column.
Click and Drag Material Stream to the flowsheet	To do that, let us drag one Material Stream.
	Let us now arrange it.
	We will leave that stream as unspecified.
Type Lean Gas	Then we will change the name of this stream to Lean Gas.
Click and drag Material Stream to the flowsheet	Next, we will insert another Material Stream.
	Let us once again arrange it.
	Leave that stream as unspecified.
Type Rich Oil	And name this stream as Rich Oil.
	Now let us insert an Absorption Column into the flowsheet.
Go to Flowsheet Objects	Go to Flowsheet Objects.
In the Filter list tab, type Heat Exchanger.	In the Filter list tab, type CAPE.
Click and drag CAPE-OPEN Unit Operation to the flowsheet	Click on the CAPE-OPEN Unit Operation displayed. Drag and drop it to the flowsheet.
Point to Add CAPE-OPEN Unit Operation	Add CAPE-OPEN Unit Operation window opens.
Select ChemSep Click Ok	Select ChemSep from the displayed list of Unit Operations. Click Ok.
Click on the added CAPE-OPEN Unit Operation	Click on the added CAPE-OPEN Unit Operation (COUO-004)
Type Absorption Column	We will change the name of the object to Absorption Column.
Click on Open CAPE-OPEN Object Editor	Click on Open CAPE-OPEN Object Editor in the Object Property Editor window.
	The New Unit Operation pop-up window appears.
Unit Name >> Absorption Column	Click on the field against Unit Name and type Absorption Column.
Operation >> Simple Absorber/Stripper	Next, click on the drop-down against Operation. Select Simple Absorber/Stripper.
# Stages >> 6	Then click on the field against # Stages and enter 6.
Pressure >> 2757906 N/m2	Next, click on the field against Pressure and enter 2757906 N/m2
Thermo >> ChemSep Click Ok	Then click on the drop-down against Thermo. Select ChemSep. Click Ok button.
Point to ChemSep (CAPE-OPEN) -Absorption Column	Please wait for a few seconds. The ChemSep (CAPE-OPEN) -Absorption Column window will appear.
	Close the ChemSep window by clicking the cross button on the top right corner of the window.
	Another pop-up appears, in which we will click No.
	First, we will connect the inlet feed streams and outlet streams with the Column. Then specify the column properties.
Go to Connections Click on drop down arrow against Feed2_stage6 Select Feed Gas	Go to the left side of the window. Under Connections, go to inlet section. Click on the drop-down against Feed2_stage6. And select Feed Gas.
Click on drop down arrow against Feed1_stage1 Select Absorbent Oil	Next, click on the drop-down against Feed1_stage1. And select Absorbent Oil.
Click on the drop down against TopProduct Select Lean Gas	Go to Outlet section. Then click on the drop-down against TopProduct. And select Lean Gas.
Click on the drop down against BottomProduct Select Rich Oil	Then click on the drop-down against BottomProduct. And select Rich Oil.
	Now we will edit the properties of the Absorber.
Click on Open CAPE-OPEN Object Editor.	Click on Open CAPE-OPEN Object Editor.
Point to the window.	The ChemSep window opens.
Click on Properties	Click on Properties on the left side of the ChemSep window.
	Here we will define the Thermodynamics, Physical Properties and Reactions taking place in the column.
	First, we will define the Thermodynamics.
K-value >> EOS	Click on the drop-down against K-value. Select EOS.
Equation of state >> Peng-Robinson 76 Click Yes	Next, click on the drop-down against Equation of state. And select Peng-Robinson 76.
Click Yes	A pop-up appears: Selection of new EOS model will reset model parameters, continue. Click Yes
Click Yes	Another pop-up appears: Use consistent EOS to compute enthalpy. Click Yes.
	Now, we will load the Thermodynamic Model parameters.
On the left side, Click Load button.	On the left side, Click Load button.
	Load interaction parameters window opens.
Select pr.ipd >>Click Open	Select pr.ipd and click Open.
Click Load button.	Available Peng-Robinson parameters for the selected compounds are displayed. Click Load button.
	There are no Physical Properties or Reactions to be defined. So, we will not specify them.
Click on Pressures	Now, we will see how to define Pressure profiles in ChemSep column. Click on Pressures on the left side of the ChemSep window.
Column pressure >> Constant pressure Top Pressure >> 2757906 N/m2	Click on drop-down against Column Pressure. Here we can select the pressure type to specify for the column depending on pressure. By-default, Constant pressure is selected. We will not change that as the column is operated at constant pressure. Enter 2757906 N/m2 against Top Pressure.
Click on Solve Options	Click on Solve Options on the left side of the ChemSep window. Here we will select the Method to solve the simulation.
Method >> 2-pass ideal K + constant H first	Click on drop-down against Method. Select 2-pass ideal K + constant H first from the displayed list.
	Now we will run the ChemSep simulation.
Click on Check input of problem and solve	Click on the green button located at the top of ChemSep window. This button is to check input of problem and solve.
Click Yes.	A pop up window appears. Click Yes.
Click OK.	Click OK.
Click Yes.	Click Yes.
Click Done.	Click Done
Click on Close button.	Close the ChemSep window.
Point to the icon.	Now we will select a proper appearance icon for the Absorption Column.
Click on Absorption Column	Click on the Absorption Column.
Flowsheet Object Appearance >> AbsorptionColumn	Object Editor Window opens on the left side. Locate Settings section. Click on the drop-down against Flowsheet Object Appearance. Select AbsorptionColumn from the drop-down.
Point to Edit Object Appearance window.	For better appearance of the column, right click on the column and select Edit Appearance. Edit Object Appearance windows opens on the right. We will change the length and height of the object.
Length >> 75	Enter 75 against Length.
Height >> 150	Enter 150 against Height.
	Let us now arrange the flowsheet.
Click Solve Flowsheet	Now, solve the DWSIM flowsheet by pressing F5 button or clicking on Solve Flowsheet.
	When the calculations are completed, we will check for the stream-wise material balance.
Insert >> Master Property Table	Go to Insert menu and select Master Property Table.
Double click on Master Property Table Point to Configure Master Property Table	Double-click on the Master Property Table to edit. Configure Master Property Table window opens.
Type Steamwise Results – Absorption Column	In the Name field, type Stream Wise Results – Absorption Column.
Select Material Stream	In Object Type select Material Stream. By default, Material Stream is already selected.
Object >> Absorbent Oil, Feed Gas, Lean Gas and Rich Oil	Under Properties to display, select Object as Absorbent Oil, Feed Gas, Lean Gas and Rich Oil.
Configure Master Property Table>> Property	Under Property, scroll down to see all the parameters. Now select the properties as Temperature Pressure Mass Flow Molar Flow Molar Flow (Mixture) / Methane Mass Flow (Mixture) / Methane Molar Flow (Mixture) / Ethane Mass Flow (Mixture) / Ethane Molar Flow (Mixture) / Propane Mass Flow (Mixture) / Propane Molar Flow (Mixture) / N-butane Mass Flow (Mixture) / N-butane Molar Flow (Mixture) / N-pentane Mass Flow (Mixture) / N-pentane Molar Flow (Mixture) / N-dodecane Mass Flow (Mixture) / N-dodecane
Click on Close button.	Close this window. Move the Master Property Table for better visibility. Here we can see the corresponding results for Inlet and Outlet Streams.
	Let's summarize.
Slide Number 7 Summary	In this tutorial, we have learnt to Simulate an Absorption Column Use ChemSep column as CAPE-OPEN Unit Operation Specify Thermodynamics in ChemSep column Specify Pressure profiles & Method in ChemSep column
Slide Number 8 Assignment Inlet stream: Absorbent Pure Water: 176.4 lbmol/h Temperature: 80 degree F Pressure: 14.7 psia Gas Inlet Acetone : 3.53 lbmol/h Nitrogen: 136.55 lbmol/h Oxygen: 36.3 lbmol/h Temperature: 80 degree F Pressure: 14.7 psia Property package: NRTL No of Stages: 12 Column pressure: 14.7 psia	As an assignment, Repeat this simulation with different compounds and thermodynamics. Different feed conditions
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Slide Number 15 Acknowledgements	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
Slide Number 16 Thanks	This tutorial is contributed by Kaushik Datta and Priyam Nayak. Thanks for joining.

Contributors and Content Editors

Kaushik Datta