Kaushik Datta at 09:04, 13 January 2020

2020-01-13T09:04:56Z

Nancyvarkey at 02:56, 13 January 2020

2020-01-13T02:56:57Z

Kaushik Datta: Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Welcome to this tutorial on '''Simulating a Shortcut Distillation column''' in..."

2020-01-09T10:35:02Z

Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Welcome to this tutorial on '''Simulating a Shortcut Distillation column''' in..."

New page

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

'''Title Slide'''
|| Welcome to this tutorial on '''Simulating a Shortcut Distillation column''' in '''DWSIM.'''
|-
|| '''Slide Number 2'''

'''Learning Objectives'''
|| In this tutorial, we will learn to:
* Simulate a '''Shortcut distillation''' column
* Calculate '''Minimum number of stages '''
* Calculate '''Minimum reflux ratio'''
* Calculate '''Optimal Feed stage location'''
* Calculate '''Condenser '''and '''Reboiler duty '''

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

'''System Requirements'''
|| This tutorial is recorded using
* '''DWSIM version 5. 8 (Classic UI) Update 3 '''
* '''Windows 10''' OS

But, this process is identical in '''Linux, Mac OS X '''or '''FOSSEE OS on ARM'''.
|-
|| '''Slide Number 4'''

'''Prerequisites'''
|| To practise this tutorial, you should know to-
* Add components to a '''flowsheet'''
* Select '''thermodynamic packages'''
* Add '''material''' and '''energy streams''' and specify their properties.

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

'''Prerequisite Tutorials and Files'''

'''https:\\spoken-tutorial.org'''
|| The prerequisite '''DWSIM''' tutorials are available on this website'''.'''

You can access these tutorials and all the associated files from this site.
|-
|| '''Slide Number 6'''

'''Compounds: '''Benzene & Toluene

'''Thermodynamics''': Raoult’s Law

'''Inlet Stream:'''

Flow Rate: 100 Kmol/h

Pressure: 1 atm

Mole Fractions:

Benzene = 0.4, Toluene = 0.6

Method: Fenske-Underwood-Gilliland
||We will develop a '''flowsheet''' to determine '''Outlet stream''' properties after '''Shortcut''' '''Distillation'''.

Here we give '''Compounds, Thermodynamics '''and '''Inlet stream conditions.'''

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

'''Column Properties'''

Reflux Ratio: 1.4 times minimum reflux ratio.

'''Product:'''

Light: Benzene, Heavy: Toluene

Distillate: X<sub>D</sub> = 0.99

Bottams: X<sub>B </sub><nowiki>= 0.01</nowiki>
|| Next, we give '''Shortcut Column Properties'''.

|-
|| Switch to '''DWSIM'''.
|| I have already opened '''DWSIM.'''
|-
|| '''File''' >> '''New Steady-state Simulation '''
|| Go to '''File''' menu and select '''New Steady-state Simulation.'''
|-
|| Cursor to '''Simulation Configuration Wizard''' window
|| '''Simulation Configuration Wizard''' window opens.
|-
|| Click on '''Next '''button at the bottom.
|| Click on '''Next''' button at the bottom.
|-
|| Type '''Benzene''' in the search tab
|| In the '''Compounds Search '''tab, type '''Benzene'''.
|-
|| '''ChemSep '''database >> '''Benzene'''
|| Select '''Benzene''' from '''ChemSep database. '''
|-
|| Type '''Toluene '''in the '''Search''' tab
|| Similarly, add '''Toluene.'''
|-
|| At the bottom, Click on '''Next.'''
|| Click the '''Next''' button at the bottom.
|-
|| Point to '''Property Packages'''
|| Now comes '''Property Packages.'''
|-
|| '''Property Packages''' >> '''Available Property Package'''

Double click on '''Raoult’s Law'''
|| From '''Available Property Packages''' list, double-click on''' Raoult’s Law'''.
|-
|| At the bottom, Click on the '''Next '''button'''. '''
|| At the bottom, click on the '''Next''' button.
|-
|| Point to '''System of Units'''
|| Next option is '''System of Units.'''
|-
|| '''System of Units >> C5'''
|| Under '''System of Units''', select '''C5'''.
|-
|| Click '''Pressure '''and choose '''atm'''
|| '''Pressure''' menu appears at the top of this list.

Select '''atm''' for atmosphere and press '''Enter'''.
|-
|| Click on '''Finish'''
|| Lastly, at the bottom, click on the '''Finish '''button.
|-
||
|| Now maximize the '''Simulation''' window.
|-
|| Click and drag '''Material Stream '''to the flowsheet
|| Now let’s insert a '''feed stream''' that has to be distilled.
|-
|| Point to '''Streams.'''
|| At the bottom of the main '''simulation''' window, go to '''Streams.'''
|-
|| Click and drag '''Material Stream '''to the flowsheet
|| From the displayed list, drag and drop a '''Material Stream '''to the '''Flowsheet'''.
|-
|| Click '''MSTR-000'''
|| Click on the '''material stream''' named '''MSTR-000.'''
|-
|| Type '''Feed'''

Press '''Enter'''.
|| Let’s change the name of this '''stream''' to '''Feed.'''

Press '''Enter'''.
|-
||
|| Now we will specify the '''Feed stream''' compositions.
|-
|| '''Input Data '''>>''' Compound Amounts'''
|| For this under '''Input Data''' click on '''Compound Amounts''' tab.
|-
|| '''Basis >> Mole Fractions'''
|| Choose the '''Basis''' as '''Mole Fractions''', if not already selected.

By default, '''Mole Fractions''' is already selected as '''Basis.'''
|-
|| '''Benzene: 0.4''' and press '''Enter'''.
|| For Benzene enter '''0.4''' and press '''Enter'''.
|-
|| '''Toluene: 0.6''' and press '''Enter'''.
|| For Toluene enter '''0.6''' and press '''Enter'''.
|-
|| Click '''Accept Changes '''button
|| On the right, click on the '''Accept Changes''' button.
|-
||
|| Now we will specify the '''Feed stream''' properties.
|-
|| Go to '''Input Data.'''

'''Stream Conditions >> Flash Spec >> Pressure and Vapor Fraction.''' '''(PVF)'''
|| Go to '''Input Data.'''

Under '''Stream Conditions '''tab, select '''Flash Spec''' as''' Pressure and Vapor Fraction.''' '''(PVF)'''
|-
|| Change '''Pressure'''
|| Change '''Pressure''' to '''1 atm '''and press '''Enter.'''
|-
|| Click '''Molar flow'''
|| Change '''Molar flow ''' to '''100 Kmol/h '''and press '''Enter.'''
|-
|| Click '''Vapor Phase Mole Fraction'''
|| Now locate '''Vapor Phase Mole Fraction.'''

Here the default value is '''0.'''

This indicates that the liquid is saturated.

Let us leave it as it is.
|-
||
|| Now let us insert a '''Shortcut Column '''into the '''flowsheet'''.
|-
|| Click and drag '''Shortcut column''' to the flowsheet
|| At the bottom of the main '''simulation''' window, go to '''Columns '''tab.

The '''Shortcut Column''' is based on '''Fenske-Underwood-Gilliland''' method.
|-
|| Click and drag '''Shortcut Column '''to the flowsheet
|| From the displayed list, drag and drop a '''Shortcut Column '''to the '''Flowsheet'''
|-
||
|| Now let us insert two '''output streams.'''
|-
|| Click and Drag '''Material Stream '''to the flowsheet
|| To do that, let us drag one '''Material Stream.'''
|-
||
|| Leave that '''stream''' as unspecified.
|-
|| Type '''Distillate'''
|| Then we will change the name of this '''stream '''to '''Distillate.'''
|-
|| Click and drag''' Material Stream '''to the flowsheet
|| Next, we will insert another '''Material Stream.'''
|-
||
|| Leave that '''stream''' as unspecified.
|-
|| Type '''Bottoms'''

Press '''Enter'''.
|| Let us change the name of this '''stream''' to '''Bottoms.'''

Press '''Enter'''.
|-
|| Click and drag '''Energy Streams '''to the flowsheet
|| Let us now insert two '''Energy streams '''for '''Condenser duty '''and '''Reboiler duty.'''
|-
|| Click and drag '''material stream''' to flowsheet
|| Go to '''Streams''' tab.

From the displayed list, drag and drop two '''Energy Streams''' to the '''Flowsheet'''.
|-
||
|| Let us now arrange it as required.
|-
|| Click on stream.

Go to the '''Property Editor Window'''

Type '''C-Duty '''and '''R-Duty'''
|| Name these '''streams''' as '''C-Duty '''and '''R-Duty.'''
|-
|| Click '''Shortcut distillation column'''
|| We are now ready to specify the '''Shortcut distillation column.'''

So let’s click on it.
|-
|| Point to the tab on the left.
|| On the left, we can see a tab displaying properties related to the '''Shortcut Column.'''
|-
|| Go to '''Connections'''

Click on drop down arrow against '''Feed Stream'''

Select''' Feed.'''
|| Under '''Connections,''' click on the drop-down against '''Feed Stream.'''

Select '''Feed.'''
|-
|| Click on drop down arrow against '''Distillate Stream'''

Select''' Distillate.'''
|| Click on the drop-down against '''Distillate Stream''' and select '''Distillate.'''
|-
|| Click on drop down arrow against '''Bottoms Stream'''

Select''' Bottoms.'''
|| Click on the drop-down against '''Bottoms Stream''' and select '''Bottoms.'''
|-
|| Click on drop down arrow against '''Condenser Duty'''

Select''' C-Duty.'''
|| Click on the drop-down against '''Condenser Duty''' and select '''C-Duty.'''
|-
|| Click on drop down arrow against '''Reboiler Duty'''

Select''' R-Duty.'''
|| Click on the drop-down against '''Reboiler Duty''' and select '''R-Duty.'''
|-
||
|| This completes the connectivity of the '''flowsheet'''.
|-
|| Point to '''Calculation Parameters'''
|| Now, go to the '''Calculation Parameters.'''

This section is used to specify various attributes of a '''Shortcut Column'''.
|-
|| Click on drop down arrow against '''Light Key Compound (LK)'''

Select''' Benzene.'''
|| Click on the drop-down against '''Light Key Compound (LK)''' and select '''Benzene.'''
|-
|| Click on drop down arrow against '''Heavy Key Compound (HK)'''

Select''' Toluene.'''
|| Click on the drop-down against '''Heavy Key Compound (HK)''' and select '''Toluene.'''
|-
|| Hover mouse at '''Properties, Parameters, Condenser type'''
|| Now go to '''Condenser Type.'''

By default, it is '''Total Condenser. '''

If a '''partial condenser''' is required, we can change it here.
|-
|| '''LK Mole Fraction in Bottoms >> 0.01'''

'''Press Enter'''

|| Click on the field against '''LK Mole Fraction in Bottoms''' and enter it as '''0.01''' and press '''Enter.'''
|-
|| '''HK Mole Fraction in Distillate >> 0.01'''

'''Press Enter'''
|| Click on the field against '''HK Mole Fraction in Distillate''' and enter it as '''0.01'''

Then press '''Enter.'''
|-
||
|| Let us go back to the slides.
|-
|| '''Show Slide'''

'''Highlight 1.4'''
|| Recall that we want our '''reflux ratio''' to be '''1.4 '''times the minimum''' reflux ratio.'''

So let us check the minimum''' reflux ratio.'''
|-
||
|| For this, let us run '''simulation''' once.
|-
|| Click '''Solve Flowsheet'''
|| To do this, click on '''Solve Flowsheet''' button.
|-
||
|| Click on the '''Distillation Column'''.

|-
||
||From the '''Property Editor Window''', locate '''Results''' section.
|-
|| '''Results''' >> '''Minimum Reflux Ratio'''

'''Actual Reflux Ratio = 1.655*1.4 = 2.317'''
|| Now we can see that '''Minimum Reflux Ratio''' is '''1.655'''.

So the actual '''Reflux Ratio''' will become '''2.317'''.
|-
|| Hover mouse at''' Results '''>>''' Actual Number of Stages, Optimal Feed Stage'''
|| Next let us enter the''' reflux ratio. '''

Look at the '''Shortcut Column''' results.

Here note the '''Actual Number of Stages''' and '''Optimal Feed Stage'''.

We can see that these values are '''NaN'''.

This is because the default value of '''reflux ratio '''is '''1.5'''.

It is less than minimum '''reflux ratio'''.
|-
|| '''Reflux Ratio''' >> '''1.655*1.4''' and ress '''Enter'''

'''Reflux Ratio: 2.317'''
|| Now let us enter the '''Reflux Ratio.'''

Enter the value as '''1.655*1.4''' and press '''Enter.'''

Now the '''Reflux Ratio''' is '''2.317.
|-
|| '''Condenser Pressure >> 1 atm'''

'''Press Enter'''

|| Click on the field against '''Condenser Pressure''' and enter it as '''1 atm'''

and press '''Enter.'''
|-
|| '''Reboiler Pressure >> 1 atm'''

'''Press Enter'''

|| Click on the field against '''Reboiler Pressure''' and enter it as '''1 atm '''.

Then press '''Enter.'''
|-
||
|| Now we will run the '''simulation'''.
|-
|| Click '''Solve Flowsheet'''
|| To do this, click on the '''Solve Flowsheet''' button on the toolbar.
|-
|| Click on the '''Shortcut column'''
|| When calculations are completed, click on the '''Shortcut column.'''
|-
|| Hover mouse at '''Properties, Results'''
|| From the '''Property Editor Window''', locate '''Results '''section.

This shows the all required results like:

'''Minimum Reflux Ratio'''

'''Minimum Number of Stages'''

'''Actual Number of Stages'''

'''Optimal Feed Stage'''

'''Condenser Duty, Reboiler Duty, etc'''
|-
|| '''Slide Number 8'''

'''Results'''
|| I have tabulated these results in a slide.
|-
||
|| Let us go back to the simulation.
|-
|| Click '''File '''and '''Save As >> '''File name = '''shortcut-end'''
|| Let me save this.

I will save it as '''shortcut-end.'''
|-
||
|| Let's summarize.
|-
|| '''Slide Number 9'''

'''Summary'''
|| In this tutorial, we have learnt to:
* Simulate a '''Shortcut distillation''' column
* Calculate '''Minimum number of stages '''
* Calculate '''Minimum reflux ratio'''
* Calculate '''Optimal Feed stage location'''
* Calculate '''Condenser '''and '''Reboiler duty '''
|-
|| '''Slide Number 10'''

'''Compounds:''' Ethanol & Water

'''Thermodynamics''': Raoult’s Law

'''Inlet Stream:'''

Flow Rate: 100 kmol/h

Pressure: 1 atm

Mole Fractions:

Ethanol = 0.5, Water = 0.5

Method: Fenske-Underwood-Gilliland
|| As an assignment,

Repeat this simulation with different '''compounds.'''

Different '''feed conditions.'''
|-
||'''Slide Number 11'''

'''Column Properties'''

Reflux Ratio: 1.5 times the minimum reflux ratio.

'''Product:'''

Light: Ethanol, Heavy: Water

Distillate: XD = 0.99

Bottams: XB <nowiki>= 0.01</nowiki>
||Different '''Column Properties.'''

|-
||
|| This brings us to the end of this tutorial.
|-
|| '''Slide Number 12'''

'''About the Spoken Tutorial Project'''

|| Watch the video available at the following link.

[http://spoken-tutorial.org/ http://spoken-tutorial.org/]

It summarizes the Spoken Tutorial project.
|-
|| '''Slide Number 13'''

'''Spoken Tutorial Workshops'''

|| The Spoken Tutorial Project Team
* Conducts workshops and
* Gives certificates.
* For more details, please write to us.
|-
|| '''Slide Number 14'''

'''Forum Slide'''

Do you have questions in this '''Spoken Tutorial?'''

Please visit this site

Choose the minute and second where you have the question.

Explain your question briefly.

Someone from the FOSSEE team will answer them.
|| Please post your time queries in this forum.
|-
|| '''Slide Number 15'''

'''DWSIM Flowsheeting Project'''

|| The '''FOSSEE''' team coordinates conversion of existing '''flowsheets''' into '''DWSIM'''.

We give honorarium and certificates for those who do this.

For more details, please visit this site.
|-
|| '''Slide Number 16'''

'''Lab Migration Project'''

|| The '''FOSSEE''' team helps migrate commercial '''simulator labs''' to '''DWSIM.'''

We give honorarium and certificates for those who do this.

For more details, please visit this site
|-
|| '''Slide Number 17'''

'''Acknowledgements'''
|| '''Spoken Tutorial''' and '''FOSSEE''' projects are funded by '''NMEICT, MHRD''', Government of India.
|-
|| '''Slide Number 18'''

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

This tutorial was originally recorded by Prof Kannan Moudgalya in May 2015.

This is Kaushik Datta from IIT Bombay.

Thanks for joining.
|-
|}

@@ Line 410: / Line 410: @@
 || From the '''Property Editor Window''', locate '''Results '''section.
-This shows all required results like:
+This shows all the required results like:
 '''Minimum Reflux Ratio'''

DWSIM/C2/Shortcut-Distillation/English - Revision history

Kaushik Datta at 09:04, 13 January 2020

Nancyvarkey at 02:56, 13 January 2020

Kaushik Datta: Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Welcome to this tutorial on '''Simulating a Shortcut Distillation column''' in..."