Madhurig at 16:23, 11 February 2026

2026-02-11T16:23:25Z

Madhurig: Created page with "'''Title''': '''Simulating a Decante''' '''Author: Priyam Nayak''' '''Keywords: DWSIM, Material stream, simulation, compounds, thermodynamic package, unit systems, decant..."

2026-02-10T10:34:22Z

Created page with "'''Title''': '''Simulating a Decante''' '''Author: Priyam Nayak''' '''Keywords: DWSIM, Material stream, simulation, compounds, thermodynamic package, unit systems, decant..."

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'''Title''': '''Simulating a Decante'''

'''Author: Priyam Nayak'''

'''Keywords: DWSIM, Material stream, simulation, compounds, thermodynamic package, unit systems, decanter, LLE, gas-liquid separator, operating conditions, separation pressure.

{| border=1
|-
|| '''Visual Cue'''
|| '''Narration'''
|-
|| '''Slide Number 1'''

'''Title Slide'''
|| Welcome to this spoken tutorial on''' Simulating a Decanter''' in '''DWSIM.'''
|-
|| '''Slide Number 2'''

'''Learning Objectives'''
|| In this tutorial, we will learn to:
* Simulate a '''Decanter'''
* Define operating conditions for a '''Decanter'''

|-
|| '''Slide Number 3'''

'''System Requirements'''

To record this tutorial, I am using
* '''DWSIM 9.0.4''' and
* '''Windows 11'''

But, this process is identical in '''Linux, Mac OS X, '''or '''FOSSEE OS on ARM'''.
|| This tutorial is recorded using the following setup.

The process demonstrated in this tutorial is identical in other OS as well.

|-
|| '''Slide Number 4'''

'''Pre-requisites'''

To practice this tutorial, you should know how to:
* add components to a '''flowsheet'''
* select '''thermodynamic packages'''
* specify the properties of a '''material''' stream

|| To practice this tutorial, you should know the following.

|-
|| '''Slide Number 5'''

'''Problem Statement'''

|| We will simulate a '''decanter,''' as shown in the figure.

This is to determine the '''exit composition '''of heavy and light liquid streams.

Use the '''UNIQUAC''' property package.
|-
|| Switch to '''DWSIM. '''
|| I have opened the '''DWSIM''' interface.
|-
|| Add the compounds

P-xylene and water

Property package - '''UNIQUAC'''

System of Units C5
|| I have also completed configuring the simulation.

That means I have completed
* Adding the compounds
* Selecting the property package
* Selecting the system of units

|-
|| Point to '''Object Palette'''

Click on '''Separators/Tanks''' section.

It is located at the right side of the flowsheet window.

Scroll down a little to see '''Gas-Liquid Separator.'''

Click and drag '''Gas-Liquid Separator''' to the flowsheet
|| Now let us add a '''Decanter'''.

Go to the '''Separators/Tanks''' section in the '''Object Palette'''.

Scroll down a little to see '''Gas-Liquid Separator.'''

Drag and drop '''Gas-Liquid Separator '''to the flowsheet.

The '''Gas-liquid Separator''' in DWSIM can be used for decanter.
|-
|| Point to '''Gas-Liquid Separator''' added to the flowsheet.

Point to material Stream '''1'''.

Point to Material Stream '''2'''.

Point to Material Stream '''3'''.
|| This is the '''Gas-Liquid Separator'''.

It has 3 material streams auto-connected to its connection ports.

Material Stream named '''1''' enters the Gas-Liquid Separator as feed.

Material Stream named '''2''' leave the Gas-Liquid Separator as vapor product.

Material Stream named '''3''' leave the Gas-Liquid Separator as a liquid project.
|-
|| Point to the Decanter V-1

Click on the Decanter to see its property editor

Highlight '''Light Liquid Stream''' connection port.

Point to '''Heavy Liquid Stream''' connection port.
|| Since we are going to simulate a decanter, we need two liquid streams.

Click on the '''Decanter''' to see its property editor.

Currently, only one liquid stream is connected to the decanter.

It is connected to the '''Light Liquid Stream''' connection port.

We will connect another material stream to the '''Heavy Liquid Stream''' connection port.
|-
|| '''Click >> Create and Connect'''.
|| To do this, Click on the yellow icon next to the drop-down against '''Heavy Liquid Stream'''.

It will automatically '''Create and Connect''' a '''Material Stream''' to the '''Decanter'''.
|-
|| Hover Mouse at''' 4'''
|| A material stream named '''4''' is created and connected to the '''Decanter'''.
|-
||
|| Let us now rename all the streams and unit operation.
|-
|| '''Click >> 1 >> 1 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' >> '''Object''' >> '''Feed'''
|| Now click on the Material Stream named '''1'''.

In this '''Object''' field under '''General Info''' section, rename '''1 '''as''' Feed'''.
|-
|| '''Click >> 2>> 2 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' >> '''Object''' >> '''Vapor'''

In this '''Object''' field under '''General Info''' section, rename '''2 '''as''' Vapor'''.

|| Now click on the Material Stream named '''2'''.

Rename the stream 2 as '''Vapor'''.
|-
|| '''Click >> 3 >> 3 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' >> '''Object''' >> '''Liquid - 1'''

In this '''Object''' field under '''General Info''' section, rename '''3 '''as''' Liquid-1'''.

|| Click on the Material Stream named '''3'''.

Rename the stream 3 as '''Liquid-1'''.

|-
|| '''Click >> 4 >> 4 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' >> '''Object''' >> '''Liquid - 2'''

In this '''Object''' field under '''General Info''' section, rename '''4 '''as''' Liquid-2'''.

|| Now click on the Material Stream named '''4'''.

Rename the stream 4 as '''Liquid-2'''.
|-
|| '''Click >> V-1 >> V-1 (Gas-Liquid Separator) Property Editor Window'''

'''General '''>> '''Object''' >> '''Decanter'''
|| Now click on the Gas-Liquid Separator named '''V-1.'''

In this '''Object''' field under '''General '''section, rename '''V-1 '''as''' Decanter'''.

|-
||
|| Now we will specify the '''Feed stream '''properties.
|-
|| Click on '''Feed.'''

Property editor window opens.
|| Now click on the '''Feed'''.

Here, the property editor window opens.
|-
|| '''Input Data >> Stream Condition >> Flash Spec>>

Temperature''' '''and Pressure (TP)'''
|| Under '''Input Data''', in '''Stream Conditions''' section, select '''Flash Spec''' as '''Temperature and Pressure (TP).'''

By default, '''Temperature and Pressure '''are already selected as '''Flash Spec.'''

So let’s not change it.
|-
|| '''Input Data >> Stream Condition >> Temperature >> 30 C'''

Press '''Enter'''
|| Change '''Temperature''' to 30''' deg C''' and press '''Enter '''to accept the new value.
|-
|| '''Input Data >> Stream Condition >> Pressure >> 1.2 bar'''

Press '''Enter'''
|| Change '''Pressure''' to 1.2 '''bar''' and press '''Enter'''.
|- style="border:0.6pt solid #808080;padding:0.176cm;"
|| '''Point to Mass Flow Rate'''
|| Instead of the '''Overall Flow Rate''', we have the individual flow rate of components.

So we will not specify anything here.
|-
|| '''Click >> Compound Amounts'''

'''Basis >> Mass Flows'''

Click '''Clear'''
|| To specify the individual flow rate of components, click on '''Compound Amounts'''.

Choose the '''Basis''' as '''Mass Flows,''' if not already selected.

Click on '''Clear''' to clear the default values.
|-
|| '''Point to the Empty Table.'''

'''P-Xylene >> 5000'''
|| Now we will enter the Mass Flows for each compound.

Click on the first cell below '''Amount''' against '''Para xylene''' and enter 5000.

Press '''Enter'''.
|-
|| '''Water >> 1000'''
|| For '''Water''', type 1000 and press '''Enter'''.
|-
|| '''Click >> Accept changes'''
|| On the right, click on '''Accept Changes '''button'''.'''
|-
|| '''Click >> Stream Conditions'''

'''Point to Mass Flow'''

|| Go back to''' Stream Conditions.'''

'''Mass Flow''' and '''Molar Flow''' are automatically calculated as per the entered flow rate of compounds.
|-
|| '''Point to the Decanter.'''

'''Click Decanter.'''
|| Now we click on the '''Decanter.'''
|-
|| '''Decanter''' >> Property Editor Window.
|| The '''Decanter '''property editor window opens.
|-
|| Highlight '''Calculation Parameters '''
|| Go to the section '''Calculation Parameters'''
|-
|| Hover mouse at '''Calculation Mode'''

'''Calculation Mode >> Legacy'''
|| The first field is '''Calculation Mode'''

Click on the drop-down against calculation mode and select '''Legacy'''
|-
|| Highlight '''Outlet Pressure Calculation'''
|| Next is '''Outlet Pressure Calculation'''.

This is similar to specifying pressure for a mixer.

Also, this is to be specified only when more than one feed stream enters the '''decanter'''.

Since we have only one feed stream entering, we will not change anything here.
|-
|| Point to '''Override Sep. Temperature'''

Check the check box on the left of '''Override Sep. Temperature'''

'''Override Sep. Temperature''' >> '''40''' deg C
|| Next is '''Override Separation Temperature'''.

This is to specify the operating temperature of the decanter.

Check the checkbox against '''Override Separation Temperature'''.

Click on the field against '''Override Separation Temperature''' and enter '''40''' deg celcius.
|-
|| Point to '''Override Sep. Temperature'''

Check the check box on the left of '''Override Sep. Pressure'''

'''Override Sep. Pressure >> 1.1 bar'''
|| The next field is '''Override Separation Pressure. '''

This is to specify the operating pressure of the flash separator.

Check the checkbox against '''Override Separation Pressure.'''

Click on the field against '''Override Separation Pressure''' and enter 1.1 bar.
|-
|| Click''' Solve'''
|| This completes the problem specification.

Click on the '''Solve''' button in the toolbar area.
|-
|| Point to '''Messages''' at the bottom
|| Once the calculations are complete, we can see an error message at the bottom.

It says “Error in ‘Decanter’: The current calculation mode requires an Energy Stream to be connected to the Unit Operation.”

This means that we have to connect an energy stream to the '''Decanter'''.
|-
|| '''Click >> Create and Connect'''
|| To do this, click on the yellow icon next to the drop-down against '''Energy Stream'''.

It will automatically '''Create and Connect''' an '''Energy Stream''' to the '''Decanter'''.
|-
|| Hover Mouse at''' E-1'''
|| An energy stream named '''E-1''' is created and connected to the '''Decanter'''.
|-
|| Click''' Solve'''
|| Now, once again solve the flowsheet.

Click on the '''Solve''' button in the toolbar area.
|-
|| Select '''Insert '''from the toolbar.
|| From the toolbar above select '''Insert.'''
|-
|| '''Insert >> Master Property Table'''
|| Select '''Master Property Table.'''
|-
|| '''Double click on Master Property Table'''
|| Double-click on the''' Master Property Table'''.
|-
|| '''Point to Configure Master Property Table'''
|| '''Configure Master Property Table '''window opens.
|-
|| Enter '''Name '''as '''Streamwise Results.'''
|| Now we enter the '''Name '''as '''Streamwise Results.'''
|-
|| '''Object >> Feed, Vapor, Liquid-1 and Liquid-2'''
|| Under '''Object '''check the checkboxes by selecting '''Feed''', '''Vapor''',''' Liquid-1''' and '''Liquid-2'''.

|-
|| '''Configure Master Property Table>> Property '''
|| Under '''Property''', which is right beside the '''Object.'''

Now select the properties as:

'''Temperature'''

'''Pressure'''

'''Mass Flow'''

'''Molar Flow'''

'''Molar Fraction (Vapor)'''

'''Molar Fraction (Mixture) / P-xylene'''

'''Molar Flow (Mixture) / P-xylene'''

'''Molar Fraction (Mixture) / Water'''

'''Molar Flow (Mixture) / Water'''
|-
|| Close this window.
|| Close this window.
|-
|| Place the cursor on the''' Decanter '''to see the table.
|| Move the '''Master Property Table '''for better visibility.

Here we can see the corresponding results for '''Decanter.'''
|-
||
|| This brings us to the end of this tutorial.
|-
|| '''Slide'''

'''Number 6'''

'''Summary'''

In this tutorial, we have learnt to
* Simulate a '''Decanter'''
* Specify the operating conditions of a '''Decanter'''

|| Let's summarize.

|-
|| '''Slide Number 7'''

'''Assignment'''
|| As an assignment,

Simulate a Decanter with different conditions.
|-
|| '''Slide Number 8'''

'''DWSIM Flowsheeting Project'''
|| We invite you to participate in '''DWSIM Flowsheeting Project'''.
|-
|| '''Slide Number 9'''

'''Lab Migration Project'''
|| We invite you to migrate commercial '''simulator labs''' to '''DWSIM.'''
|-
|| '''Slide Number 10'''

'''Acknowledgements'''
|| The '''FOSSEE''' project is funded by '''NMEICT, Ministry of Education(MoE)''', Government of India.
|-
|| '''Slide Number 11'''

'''Thanks'''
|| We thank the '''DWSIM''' team for making it as an''' open source software.'''

Thank you for joining.
|-
|}

@@ Line 108: / Line 108: @@
 It has 3 material streams auto-connected to its connection ports.
-Material Stream named '''1''' enters the Gas-Liquid Separator as feed.
+Material Stream named '''1''' enters the Gas-Liquid Separator as '''feed'''.
-Material Stream named '''2''' leave the Gas-Liquid Separator as vapor product.
+Material Stream named '''2''' leave the Gas-Liquid Separator as '''vapor product'''.
-Material Stream named '''3''' leave the Gas-Liquid Separator as a liquid project.
+Material Stream named '''3''' leave the Gas-Liquid Separator as a '''liquid project'''.
 |-
 || Point to the Decanter V-1
@@ Line 221: / Line 221: @@
 Press '''Enter'''
 || Change '''Pressure''' to 1.2 '''bar''' and press '''Enter'''.
-|- style="border:0.6pt solid #808080;padding:0.176cm;"
+|-
 || '''Point to Mass Flow Rate'''
 || Instead of the '''Overall Flow Rate''', we have the individual flow rate of components.
@@ Line 241: / Line 241: @@
 '''P-Xylene >> 5000'''
-|| Now we will enter the Mass Flows for each compound.
+|| Now we will enter the '''Mass Flows''' for each compound.
 Click on the first cell below '''Amount''' against '''Para xylene''' and enter 5000.
@@ Line 251: / Line 251: @@
 |-
 || '''Click >> Accept changes'''
-|| On the right, click on '''Accept Changes '''button'''.'''
+|| On the right, click on '''Accept Changes '''button'''.
 |-
 || '''Click >> Stream Conditions'''
@@ Line 275: / Line 275: @@
 '''Calculation Mode >> Legacy'''
-|| The first field is '''Calculation Mode'''
+|| The first field is '''Calculation Mode'''.
 Click on the drop-down against calculation mode and select '''Legacy'''

Process-Simulation-using-DWSIM/C2/Simulating-a-Decanter/English - Revision history

Madhurig at 16:23, 11 February 2026

Madhurig: Created page with "'''Title''': '''Simulating a Decante''' '''Author: Priyam Nayak''' '''Keywords: DWSIM, Material stream, simulation, compounds, thermodynamic package, unit systems, decant..."