Madhurig at 16:09, 11 February 2026

2026-02-11T16:09:47Z

Madhurig: Created page with "'''Title: Distillation Column for Binary Mixture''' '''Author: Priyam Nayak''' '''Keywords: '''DWSIM''', '''Material stream, shortcut distillation, compounds, thermodynamic..."

2026-02-10T10:04:05Z

Created page with "'''Title: Distillation Column for Binary Mixture''' '''Author: Priyam Nayak''' '''Keywords: '''DWSIM''', '''Material stream, shortcut distillation, compounds, thermodynamic..."

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'''Title: Distillation Column for Binary Mixture'''

'''Author: Priyam Nayak'''

'''Keywords: '''DWSIM''', '''Material stream, shortcut distillation, compounds, thermodynamic package, heavy key, light key, recovery, feed stage, reflux ratio, video tutorial.

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

'''Title Slide'''
|| Welcome to this tutorial on simulating a '''Distillation Column for Binary Mixture''' in '''DWSIM'''.
|-
|| '''Slide Number 2'''

'''Learning Objectives'''
|| In this tutorial, we will learn to:
* Simulate a '''Rigorous Distillation''' '''Column'''
* Copy a '''Material Stream'''
* Specify different specs for a '''Distillation Column'''
* View the''' Column profiles'''

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

'''System Requirements'''

This tutorial is recorded using
* '''DWSIM version 9.0.2'''
* '''Windows 11 OS'''

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 to
* add components to a '''flowsheet.'''
* select '''thermodynamic''' packages.
* add '''material''' '''stream''' and specify the properties of a '''material stream'''

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

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

'''Problem Statement'''

|| This problem was solved in the spoken tutorial on '''Shortcut Column for Binary Mixture'''.

We will simulate a '''Distillation Column''' using the results obtained during the '''Shortcut Column''' simulation.

For this, we will use the''' DWSIM''' file saved during the '''Shortcut Column for Binary Mixture''' tutorial.
|-
|| '''Slide Number 6'''

'''Code Files'''
|| '''binary-shortcut''' file used in the tutorial is provided as a''' Code file''' on this tutorial page.

Download this file from''' Code Files''' link.
|-
|| Switch to '''DWSIM'''.
|| I have already opened '''DWSIM''' on my machine.
|-
|| Show '''DWSIM''' window

''' File >> Save As >> binary-distillation'''
|| I have opened the file '''binary-shortcut.dwxmz'''.

Let me save it as '''binary-distillation'''.

We can see that the file name has changed now to '''binary-distillation'''.
|-
|| '''Slide Number 7'''

'''Solution'''

Reflux Ratio = 2.5251

Actual number of stages = 20

Optimal feed location = 10

Bottoms product rate=1202.04 kmol/h
|| This represents the solution to the given problem using the '''Shortcut Column'''.

We will be using these values shortly.
|-
|| Switch to DWSIM
|| Let me switch back to''' DWSIM'''.
|-
|| Point to '''Object Palette'''

Click on the '''Columns''' section.

Click and drag '''Distillation Column''' to the flowsheet
|| Now, let us add a '''Distillation Column'''.

Go to the '''Column '''section in the '''Object Palette'''.

Drag and drop a '''Distillation Column '''to the flowsheet.

Ensure to drop the Distillation Column a bit far away from the Shortcut Column
|-
|| Point to '''DCOL-1''' added to the flowsheet.
|| This is the '''Distillation Column'''.

It is similar to the '''shortcut column'''.

It has 3 material streams and 2 energy streams auto-connected to its connection ports.
|-
|| Point to material Stream '''4'''.
|| Material Stream named '''4''' enters the Distillation Column as feed.
|-
|| Point to Material Stream '''5'''.
|| Material Stream named '''5''' leaves the Distillation Column as Distillate.
|-
|| Point to Material Stream '''6'''.
|| Material Stream named '''6''' leaves the Distillation Column as a Bottoms.
|-
|| Point to Energy Stream '''E3'''.
|| Energy Stream '''E3 '''acts as''' Condenser Duty'''.
|-
|| Point to Energy Stream '''E4'''.
|| Energy Stream '''E4''' acts as '''Reboiler Duty'''.
|-
|| Point to Distillation Column '''DCOL-1'''.
|| Now, let us rename all the objects.
|-
|| Click '''4'''

Type '''DC-Feed'''

Press '''Enter.'''
|| Click on the '''Material Stream''' named '''4 '''and rename it as''' DC-Feed.'''
|-
|| Click '''5'''

Type '''DC-Distillate'''

Press '''Enter.'''
|| Next, click on the '''Material Stream''' named '''5 '''and rename it as''' DC-Distillate.'''
|-
|| Click '''6 '''

Type '''DC-Bottoms'''

Press '''Enter.'''
|| Next, click on the '''Material Stream''' named '''6 '''and rename it as '''DC-Bottoms.'''
|-
|| Click '''E3'''

Type '''DC-C-Duty.'''

Press '''Enter.'''
|| Next, click on the '''Energy Stream''' named '''E3 '''and rename it as '''DC-C-Duty.'''

|-
|| Click '''E4'''

Type '''DC-R-Duty.'''

Press '''Enter.'''
|| Next, click on the '''Energy Stream''' named '''E4 '''and rename it as '''DC-R-Duty.'''

|-
|| Click '''DCOL-1'''

Type '''DColumn.'''

Press '''Enter.'''

|| Click on the '''Distillation Column''' named '''DCOL-1 '''and rename it as '''DColumn.'''

|-
|| Point to all the streams.
|| All our streams and the unit operation have been named.
|-
||
|| Now we specify the feed stream connected to the distillation column.

Instead of entering the values manually, we will copy them from the '''SC-Feed'''.
|-
|| Click on '''DC-Feed'''

Highlight '''Temperature, Pressure, '''and '''Molar Flow Rate''' values.

Right-click on '''DC-Feed.'''

'''Copy from >> SC-Feed'''

Highlight '''Temperature, Pressure, '''and '''Molar Flow Rate''' values
|| For this, first click on '''DC-Feed'''.

Notice the existing values of '''temperature''', '''pressure''' and '''molar flow rate'''.

Now right-click the '''DC-Feed'''.

Click on '''Copy from''' and then click on '''SC-Feed'''.

Now look at the '''temperature''', '''pressure''', and '''molar flow rate''' values of '''DC-Feed'''.

They are as per the problem statement.
|-
|| '''Click '''on''' Distillation Column'''

Point to '''Property Editor Window.'''
|| Next, click on the''' Distillation Column.'''

The property editor window opens.
|-
|| Highlight the '''General''' tab
|| We land in the '''General''' tab
|-
|| Cursor to '''Number of Stages''' option
|| Locate the '''Number of Stages''' option.

We have to enter the total number of trays here.
|-
|| '''Show Slide 7 '''

'''Solution'''

Highlight Actual Number of Stages >> 20 in the slide
|| We got the Actual Number of Stages to be '''20''' from the '''shortcut method'''.
|-
|| '''Number of Stages >> 20'''
|| Enter the '''Number of Stages''' as '''20''' and press '''Enter'''.
|-
|| Highlight '''Condenser/Top Pressure'''

'''Condenser/Top Pressure >> 1.2'''
|| Next is '''Condenser/Top Pressure. '''

Enter the pressure as '''1.2 bar''' and press '''Enter'''.
|-
|| Highlight '''Column Pressure Drop '''

'''Column Pressure Drop >> 0.3'''
|| Next is '''Column Pressure Drop'''.''' '''

This is calculated as the difference between the reboiler and condenser pressure.

'''Reboiler pressure '''is 1.5 bar, and condenser pressure is 1.2 bar.

So column pressure drop is 0.3 '''bar'''.

Enter the column pressure drop as '''0.3 bar''' and press '''Enter'''.
|-
|| Highlight '''Solver''' option
|| Now we will select the solution method.
|-
|| '''Solver >> Wang-Henke (Bubble Point)'''
|| Click on the drop-down against '''Solver.'''

Choose the '''Solver''' as '''Wang-Henke (Bubble Point'''), if not already selected.

|-
|| Highlight '''Specification''' tab

Click on '''Specifications''' tab
|| Next is the '''Specifications '''tab.

Click on the '''Specifications''' tab.

Through this, we will provide the top and bottom specifications.
|-
|| Highlight the '''Condenser''' tab.

Select '''Condenser Type''' as '''Total'''
|| We are on the '''Condenser''' tab.

Select '''Condenser Type''' as '''Total''', if not already selected by default.
|-
|| '''Condenser Pressure drop '''>> '''0'''.
|| Select '''Condenser Pressure drop '''as zero.

We will leave the default selection 0 as it is.
|-
|| '''Specification''' >> '''Reflux Ratio'''
|| Next select the '''Specification''' as '''Reflux Ratio'''.

By default, '''Reflux Ratio''' is already selected as '''Specification.'''
|-
|| '''Reflux Ratio''' >> '''2.5251'''
|| Under '''Compound''', we can see a field.

Here we will enter the value of '''Reflux Ratio''' as '''2.5251''' and Press '''Enter'''.
|-
|| Click on '''Reboiler''' tab
|| Now, click on the '''Reboiler''' tab'''.'''
|-
|| '''Specification''' >> '''Product Molar Flow'''

Change Units to '''kmol/h'''

'''Molar flow rate''' >> '''1202.04'''

Highlight '''1202.04''' in the slide
|| Select '''Specification''' as '''Product Molar Flow, '''if not already selected.

Under '''Compound''', change the units to '''kmol/h''' and press '''Enter'''.

Now enter the '''Molar flow rate''' as '''1202.04'''.

Press '''Enter'''.

This is suggested by the '''shortcut '''solution.

|-
|| Highlight '''Stages''' tab

Click on '''Stages''' tab

Highlight the '''Efficiency''' column
|| Next click on the '''Stages '''tab.

This is to specify the efficiency of the stages in the column.

We will leave it with the default value.
|-
|| Highlight '''Connections''' tab.

Click on '''Connections''' tab.
|| Next click on the '''Connections''' tab.

|-
|| Highlight '''Stream Connections'''
|| Under '''Connections''', the first tab is '''Stream Connections.'''

This is to connect various material and energy streams to the column.

For this problem, all material and energy streams are connected to the column.
|-
|| Highlight '''Stream-Stage Associations'''

Click '''Stream-Stage Associations'''
|| Under Connections, the next tab is '''Stream-Stage Associations.'''

Click '''Stream-Stage Associations'''.

This is to specify the stage location of different streams connected to the column.
|-
|| '''Show Slide 7 '''

'''Solution'''

Highlight '''Optimal Feed Stage >> 10'''
|| As per shortcut column results, the optimal feed stage is '''10'''.

|-
|| Click '''drop-down '''under '''Stage Location'''

'''Feed >> Stage location >> Stage9'''

|| Click on the drop-down under '''Stage Location''' against '''Feed Port Type'''.

Counting '''Condenser''' as first stage, Stage1 as second stage and so on.

Keep counting from top to bottom and Stage9 becomes 10th Stage.

So for '''Feed Port Type''', select '''Stage location''' as '''Stage9.'''

|-
|| Highlight '''Side Draw Specs'''

Click '''Side Draw Specs'''
|| Under '''Connections''', the next tab is '''Side Draw Specs.'''

Click '''Side Draw Specs.'''

This is to specify the flow rate of '''side draw streams''', if any.

Since there are no '''side draw streams''' attached to the column, the tab is blank.
|-
|| Highlight '''Estimates''' tab

Click '''Estimates''' tab

|| After '''Connections''', Next is '''Estimates''' tab

Click on '''Estimates''' tab

This is to specify the initial value for some of the variables, like temperature, flow rate.

This is generally done when the system is complex and difficult to converge.
|-
||
|| Now we will run the '''simulation'''.
|-
|| Click on the '''Solve '''button
|| Click on the '''Solve''' button on the toolbar.
|-
|| Click on the '''Results''' tab
|| When the calculations are completed, click on the '''Results''' tab
|-
|| Highlight

'''Condenser Duty = 23576.1 kW'''

'''Reboiler Duty = -30783.1 kW'''
|| This shows all the required results like*'''Condenser Duty'''
* '''Reboiler Duty''' and
* '''Column Profiles'''

|-
|| Highlight '''Column Temperature, Pressure and Composition Profiles'''
|| Now let us look at the '''Column profiles'''.
|-
|| Click on''' View Temperature, Pressure and Composition Profiles '''button.
|| Click on '''View Temperature, Pressure and Composition Profiles '''button.
|-
|| Point to the '''Column profiles'''

Highlight tabs*'''Temperature profiles'''
* '''Flows profiles'''
* '''Component flows and'''
*'''Component fractions'''

Click on the '''Table''' tab
|| Now we can see a pop-up window.

Here, we can see the -
* '''Temperature profiles'''
* '''Flows profiles'''
* '''Component flows and'''
* '''Component fractions'''

For the exact numbers, click on the '''Table''' tab to the right of the '''Graph''' tab.
|-
|| '''Press CTRL+S'''
|| Now save this file.
|-
|| '''Slide Number 8'''

'''Summary'''
|| This brings us to the end of this tutorial.

Let's summarize.
|-
|| '''Slide Number 9'''

'''Assignment'''

Solve the Distillation Column for the modified problem given in the assignment of the Shortcut Column for Binary Mixture.
|| As an assignment, please do the following:

|-
|| '''Slide Number 10'''

'''DWSIM Flowsheeting Project'''
|| We invite you to participate in '''DWSIM Flowsheeting Project'''.
|-
|| '''Slide Number 11'''

'''Lab Migration Project'''
|| We invite you to migrate commercial '''simulator labs''' to '''DWSIM'''.
|-
|| '''Slide Number 12'''

'''Acknowledgements'''
|| The '''FOSSEE''' project is funded by '''NMEICT, Ministry of Education(MoE)''', Government of India.
|-
|| '''Slide Number 13'''

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

Thank you for joining.
|-
|}

@@ Line 120: / Line 120: @@
 |-
 || Point to material Stream '''4'''.
-|| Material Stream named '''4''' enters the Distillation Column as feed.
+|| Material Stream named '''4''' enters the Distillation Column as '''feed'''.
 |-
 || Point to Material Stream '''5'''.
-|| Material Stream named '''5''' leaves the Distillation Column as Distillate.
+|| Material Stream named '''5''' leaves the Distillation Column as '''Distillate'''.
 |-
 || Point to Material Stream '''6'''.
-|| Material Stream named '''6''' leaves the Distillation Column as a Bottoms.
+|| Material Stream named '''6''' leaves the Distillation Column as a '''Bottoms'''.
 |-
 || Point to Energy Stream '''E3'''.
@@ Line 247: / Line 247: @@
 '''Column Pressure Drop >> 0.3'''
-|| Next is '''Column Pressure Drop'''.''' '''
+|| Next is '''Column Pressure Drop'''.
 This is calculated as the difference between the reboiler and condenser pressure.
-'''Reboiler pressure '''is 1.5 bar, and condenser pressure is 1.2 bar.
+'''Reboiler pressure '''is 1.5 '''bar''', and condenser pressure is 1.2 '''bar'''.
 So column pressure drop is 0.3 '''bar'''.
@@ Line 298: / Line 298: @@
 |-
 || Click on '''Reboiler''' tab
-|| Now, click on the '''Reboiler''' tab'''.'''
+|| Now, click on the '''Reboiler''' tab'''.
 |-
 || '''Specification''' >> '''Product Molar Flow'''
@@ Line 387: / Line 387: @@
 Click '''Estimates''' tab
-|| After '''Connections''', Next is '''Estimates''' tab
+|| After '''Connections''', next is '''Estimates''' tab
 Click on '''Estimates''' tab
@@ Line 409: / Line 409: @@
 '''Reboiler Duty = -30783.1 kW'''
-|| This shows all the required results like*'''Condenser Duty'''
+|| This shows all the required results like
 * '''Reboiler Duty''' and
 * '''Column Profiles'''
@@ Line 422: / Line 423: @@
 || Point to the '''Column profiles'''
-Highlight tabs*'''Temperature profiles'''
+Highlight tabs
 * '''Flows profiles'''
 * '''Component flows and'''

Process-Simulation-using-DWSIM/C2/Distillation-Column-for-Binary-Mixture/English - Revision history

Madhurig at 16:09, 11 February 2026

Madhurig: Created page with "'''Title: Distillation Column for Binary Mixture''' '''Author: Priyam Nayak''' '''Keywords: '''DWSIM''', '''Material stream, shortcut distillation, compounds, thermodynamic..."