PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Simulating a Rigorous Distillation column''' in '''DWSIM.''' |- || 00:07 || In this t..."

2021-04-30T10:25:50Z

Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Simulating a Rigorous Distillation column''' in '''DWSIM.''' |- || 00:07 || In this t..."

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{|border=1
||'''Time'''
||'''Narration'''
|-
|| 00:01
|| Welcome to this tutorial on '''Simulating a Rigorous Distillation column''' in '''DWSIM.'''
|-
|| 00:07
|| In this tutorial, we will learn to:

|-
|| 00:10
|| Simulate a '''Rigorous Distillation''' column

|-
|| 00:13
|| Specify column '''Pressure Profile'''

|-
|| 00:16
|| Specify '''Tray Efficiencies'''

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|| 00:19
|| Check desired product compositions and

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|| 00:22
|| View the '''Column profiles'''
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|| 00:25
|| This tutorial is recorded using

'''DWSIM 5. 8 (Classic UI)''' '''Update 3''' and '''Windows 10''' '''OS'''.

|-
|| 00:36
||But, this process is identical in '''Linux, Mac OS X '''or '''FOSSEE OS on ARM'''.
|-
|| 00:44
|| To practise this tutorial, you should know to-

Add components to a '''flowsheet'''

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|| 00:50
|| Select '''thermodynamic''' packages

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|| 00:53
|| Add '''material''' and '''energy streams''' and specify their properties.
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|| 00:58
|| The prerequisite tutorials are available on this website.

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|| 01:03
||You can access these tutorials and all the associated files from this site.
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|| 01:09
|| '''shortcut-end''' file used in the tutorial is provided as a '''Code file''' on this tutorial page.

|-
|| 01:17
||Download the files from '''Code Files''' link.
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|| 01:21
|| I have already opened '''DWSIM''' on my machine.
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|| 01:26
|| I have opened the file '''shortcut-end.dwxmz.'''

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|| 01:32
||Let me save this as '''rigorous.'''

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|| 01:37
||We can see that the file name has changed now to '''rigorous.'''
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|| 01:42
|| Click on the '''Settings''' button on the toolbar.
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|| 01:46
|| Click on '''Systems of Units '''tab.
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||01:49
|| Locate '''Pressure''' menu on the right hand column.

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|| 01:53
||Click and choose '''atm''' for atmosphere.

Press '''Enter'''.
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|| 01:59
|| Similarly, change the units of '''Delta_P''' to '''atm.'''

Press '''Enter'''.
|-
|| 02:06
|| Close the '''Settings''' window.
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|| 02:09
|| Let me switch to the slides.
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|| 02:12
|| This problem was solved in the spoken tutorial on '''Shortcut Distillation'''.
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|| 02:18
|| These values form the basis for the '''rigorous distillation''' column problem.

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|| 02:24
|| This represents the solution of the given problem using '''Shortcut Distillation.'''

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|| 02:30
||We will be using these values shortly.
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|| 02:33
|| Let us begin by replacing the '''Shortcut column''' with a '''Rigorous column'''.
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|| 02:38
|| Let me go back to the '''simulation'''.
|-
|| 02:41
|| Right-click on the '''Shortcut column, '''and select '''delete'''.

Click '''Yes''' in the prompt box.
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||02:49
|| At the bottom of the main '''simulation''' window, go to '''Columns''' tab.
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|| 02:54
|| From the displayed list, drag and drop a '''Distillation Column '''to the '''Flowsheet.'''
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|| 02:59
|| Let’s us now arrange it as required.
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|| 03:02
|| Click on the '''Distillation Column.'''
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|| 03:05
|| On the left, go to the '''Property Editor Window''' of the '''Distillation Column.'''
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|| 03:10
|| Now under '''Column Specs''', click on the '''General''' tab.
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|| 03:15
|| Locate the '''Number of Stages''' option.

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|| 03:18
||We have to enter the total number of trays here.
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|| 03:22
|| We got the equilibrium stages to be '''20''' from the '''shortcut method'''.
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||03:27
|| We can see it in the slide.

Let us go back to '''DWSIM'''.
|-
|| 03:33
|| This number should be one more than the equilibrium stages given by '''shortcut method'''.

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|| 03:39
||So, change the '''Number of Stages''' to '''21''' and press '''Enter.'''
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|| 03:46
|| This number includes the '''condenser''' also in '''DWSIM.'''

|-
|| 03:51
||So here we will use a '''total condenser'''.
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|| 03:56
|| Now we will select the solution method.
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|| 03:59
|| Click on the drop-down against '''Solver.'''

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|| 04:03
||Choose the '''Solver''' as '''Wang-Henke (Bubble Point'''), if not already selected.

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|| 04:09
||By default, '''Wang-Henke (Bubble Point''') is already selected as '''Solver.'''
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|| 04:15
|| Now we will connect the '''streams''' to the '''Distillation''' column.
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|| 04:20
|| Go to '''Column Configuration '''section.
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|| 04:23
|| Navigate to '''Connections >> Streams Connections >> Feeds'''
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||04:29
|| Here we have to specify the '''stream''' which is entered as a '''feed''' to the column.

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|| 04:35
||Here, we can see the list of '''Feed Ports'''.

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|| 04:39
||Select any '''port''' where we want the '''feed''' to enter the '''Distillation''' column.

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|| 04:44
||For a better look, we select '''Column Feed Port 5'''.
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|| 04:48
|| Click on the down-down against '''Column Feed Port 5.'''

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|| 04:53
||Select '''Feed''' and press '''Enter'''.
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|| 04:56
|| In a similar way, we will connect the '''product streams'''.
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||05:00
|| Now, click on the '''Products''' tab.
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|| 05:03
|| Select '''Distillate''' as '''Distillate '''and press '''Enter'''.
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|| 05:08
|| Select '''Bottoms''' as '''Bottoms '''and press '''Enter'''.
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|| 05:13
|| Now we will connect '''heat duties '''to '''reboiler''' and '''condenser'''.
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|| 05:18
|| Click on the '''Duties''' tab.
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|| 05:20
|| Select '''Reboiler Duty''' as '''R-Duty '''and press '''Enter'''.
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|| 05:25
|| Select '''Condenser''' Duty as '''C-Duty '''and press '''Enter'''.
|-
|| 05:31
|| Now under '''Connections''', click on '''Stream-Stage Associations''' tab.
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|| 05:37
|| For '''Feed Port type''', select '''Stage location''' as '''Stage9.'''

Press '''Enter.'''
|-
|| 05:44
|| This is as per the solution we got in the '''Shortcut Distillation''' column.

|-
|| 05:49
||We got the '''Optimal Feed Location''' to be''' 9''' from the '''Shortcut''' method'''.'''
|-
|| 05:54
|| We can see it in the slide.

Let us go back to '''DWSIM'''.
|-
|| 06:00
|| This completes the connections.
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|| 06:03
|| Now we have to provide the top and bottom specifications.
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|| 06:08
|| Under '''Properties '''tab, locate the section '''Column Specs'''.
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|| 06:13
|| Click on the '''Condenser''' tab.

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|| 06:16
||Select '''Condenser Type''' as '''Total''', if not already selected.

|-
|| 06:21
||By default, it is '''total condenser'''.

We will leave it as it is.
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|| 06:25
|| Change '''Condenser Pressure''' to '''1 atmosphere''' and press '''Enter.'''
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|| 06:32
|| Select '''Condenser Pressure drop '''as '''0'''.

By default, it is '''0.''' We will leave it as it is.
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||06:40
|| Next select the '''Specification''' as '''Reflux Ratio''', if not already selected.

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||06:47
|| By default, '''Reflux Ratio''' is already selected as '''Specification.'''
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||06:53
|| Under '''Compound''', we can see a field.

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||06:56
|| Here we can enter the value of '''reflux ratio'''.

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||07:00
|| We will enter the '''Reflux Ratio''' as '''2.317'''.

Press '''Enter'''.
|-
|| 07:06
|| Now click on '''Reboiler '''tab.

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||07:10
|| Change '''Reboiler Pressure''' to '''1.1 atmosphere''' and press '''Enter.'''
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|| 07:16
|| Select '''Specification''' as '''Product Molar Flow, '''if not already selected.

|-
||07:22
|| Under '''Compound''', change the units to '''kilomol per hour''' and press '''Enter'''.

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||07:29
|| Now enter the '''Molar flow rate''' as '''60.204'''.

Press '''Enter'''.

|-
||07:36
|| This is suggested by the '''shortcut '''solution.

We can see it in the slide.
|-
|| 07:43
|| Let us go back to DWSIM.
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|| 07:46
|| Now we will also see how to specify the pressure for the intermediate stages.
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||07:53
|| Now go to '''Column Configuration''' section.
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|| 07:56
|| Click on '''Stages''' tab.
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|| 07:59
|| It shows the '''condenser''' and '''reboiler pressures '''as '''1 '''and''' 1.1 atmosphere.'''

|-
||08:06
|| New stages that have been added, are assigned zero pressure, which is incorrect.

|-
||08:12
|| We would like the intermediate stage pressures to take the interpolated values.
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||08:18
|| Under '''Column Configuration''' section, go to the extreme left.

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||08:23
|| Here we can see 5 different icons.

Hover the mouse to the last icon.

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||08:30
|| A popup is displayed as '''Estimate Stage Pressures by Interpolation'''.

Click on the icon.

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||08:38
|| Immediately, linearly interpolated values are assigned to every stage.

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||08:44
|| We can also edit the pressure of the individual stages, if they are known.

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||08:50
|| We may also change the efficiency in one or more stages.
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|| 08:55
|| Now we will run the '''simulation'''.
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|| 08:58
|| Click on '''Solve Flowsheet''' button on the toolbar.
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|| 09:02
|| When the calculations are completed, click on the '''Distillation column'''.
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|| 09:07
|| Go to the '''Property Editor Window''' of the '''Distillation Column.'''

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||09:12
|| Locate the '''Results''' section.

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||09:15
|| This shows all the required results like

'''Condenser Duty ''', '''Reboiler Duty''' and '''Column Profiles'''
|-
|| 09:23
|| Now let us look at the '''Column profiles'''.
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|| 09:27
|| Click on '''View Temperature, Pressure and Composition Profiles''' button.
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|| 09:33
|| Now we can see a pop-up window.

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||09:37
|| Here, we can see the- Temperature profiles, Flows profiles, Component flows and Component fractions

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||09:50
|| For the exact numbers, click on the '''Table''' tab to the right of the '''Graph''' tab.
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|| 09:56
|| Now save this file.
|-
|| 09:59
|| Let us summarize
|-
|| 10:03
|| In this tutorial, we have learnt to:

Simulate a '''Rigorous Distillation''' column, Specify column '''Pressure Profile'''

|-
||10:11
|| Specify '''Tray Efficiencies''', Check desired product compositions and View the '''Column profiles'''

|-
|| 10:20
|| Take the Assignment from the '''Shortcut Distillation''' column.

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|| 10:24
|| Perform the simulation using '''Rigorous Distillation'''.

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|| 10:28
|| Here is the assignment problem statement of the '''Shortcut Column'''.

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|| 10:33
|| With this, we have come to the end of this tutorial.
|-
|| 10:37
|| Watch the video available at the following link.

It summarizes the Spoken Tutorial project.
|-
|| 10:45
|| The Spoken Tutorial Project Team, Conducts workshops and Gives certificates.

|-
|| 10:51
|| For more details, please write to us.

|-
|| 10:54
|| Please post your time queries in this forum.
|-
|| 10:58
|| The '''FOSSEE''' team coordinates conversion of existing flowsheets into '''DWSIM'''.

|-
|| 11:04
|| We give honorarium and certificates for those who do this.

For more details, please visit this site.
|-
|| 11:13
|| The '''FOSSEE''' team helps migrate commercial simulator labs to '''DWSIM.'''

|-
|| 11:19
|| We give honorarium and certificates for those who do this.

For more details, please visit this site
|-
|| 11:28
|| '''Spoken Tutorial''' and '''FOSSEE''' projects are funded by '''NMEICT, MHRD''', Government of India.
|-
|| 11:37
|| This tutorial was originally recorded by Prof Kannan Moudgalya in September 2015.

This is Kaushik Datta from IIT Bombay. Thanks for joining.
|-
|}

DWSIM/C2/Rigorous-Distillation/English-timed - Revision history

PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Simulating a Rigorous Distillation column''' in '''DWSIM.''' |- || 00:07 || In this t..."