View source for DWSIM/C2/Binary-Phase-Envelope/English-timed

{|border=1
||'''Time'''
||'''Narration'''

|- 
||00:01
|| Welcome to this '''spoken tutorial''' on '''Binary Phase Envelope '''in '''DWSIM'''. 

|- 
||00:07
|| In this tutorial, we will learn to generate:  '''Txy''' plot at given '''pressure''', 

|- 
|| 00:14
||  '''xy''' plot for the obtained '''Txy''' data, 

|- 
|| 00:18
||  '''Pxy''' plot at given '''temperature'''. 

|- 
|| 00:22
|| To record this tutorial, I am using  '''DWSIM 5.2 (Classic UI)''' and   '''Windows 10'''. 

|- 
|| 00:32
|| The process demonstrated in this tutorial is identical in other '''OS''' also, such as- 

'''Linux''', 

'''Mac OS X '''or 

'''FOSSEE OS '''on '''ARM'''. 

|- 
||00:44
|| To practice this tutorial, you should know to : add components to a '''flowsheet''', 

|- 
|| 00:51
||  Select '''thermodynamic '''packages,

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|| 00:54
||  add '''material '''streams and specify their properties. 
 
|- 
|| 00:59
|| The pre-requisite tutorials are mentioned on our website.

|- 
|| 01:04
|| You can access these tutorials and all the associated files from this site. 

|- 
||01:10
|| In this tutorial, using '''DWSIM''', we will generate:  '''Txy''' plot at a constant pressure of '''1.013 bar''', 

|- 
|| 01:21
|| '''xy''' plot for the obtained '''Txy''' data, 

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|| 01:25
||  '''Pxy''' plot at a constant temperature of '''75 degree centigrade'''. 

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|| 01:31
|| Here we give '''compounds, inlet stream conditions''' and '''property package'''. 

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|| 01:38
|| I have already opened '''DWSIM '''on my machine. 

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|| 01:43
|| Go to '''File '''menu and select '''New Steady-state Simulation.''' 

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|| 01:50
|| '''Simulation Configuration Wizard '''window appears. 
 
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|| 01:54
|| At the bottom, click on the '''Next '''button. 

|- 
|| 01:58
|| Now, in the '''Compounds Search '''tab, type '''Ethanol.''' 

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|| 02:04
|| Select '''Ethanol '''from '''ChemSep '''database. 

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|| 02:08
|| Similarly, add '''1-propanol'''. 

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|| 02:12
|| At the bottom, click on the '''Next '''button. 

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|| 02:16
|| The '''Property Packages '''opens. 

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|| 02:19
|| From '''Available Property Packages '''list, double-click on '''Soave-Redlich-Kwong (SRK).''' 

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|| 02:26
|| Then click on the '''Next '''button'''.''' 

|- 
|| 02:30
|| We are moved to a new window named '''Flash Algorithm'''. 

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||02:35
|| From '''Default Flash Algorithm '''select '''Nested Loops(VLE)'''. 

|- 
|| 02:41
|| At the bottom, click on the '''Next '''button. 

|- 
|| 02:45
|| Next option is '''System of Units.''' 

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||02:49
|| Under '''System of Units''', select '''C5'''. 

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||02:54
|| At the bottom, click on the '''Finish '''button. 

|- 
|| 02:58
|| Let us maximize the '''simulation window''' for better visibility. 

|- 
|| 03:03
|| Let’s insert a '''material stream''' for which we have to generate the '''Txy, xy '''and '''Pxy''' plots. 

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|| 03:12
|| On the right hand side of the main '''simulation window''', go to '''Flowsheet Objects.''' 

|- 
|| 03:19
|| In the '''Filter List '''tab, type '''Material Stream.''' 

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|| 03:24
|| From the displayed list, drag and drop a '''Material Stream '''to the '''Flowsheet'''. 

|- 
|| 03:30
|| Click on the '''Material Stream “MSTR-000” '''to view its properties. 

|- 
|| 03:37
|| Let’s change the name of this '''stream '''to '''Feed.''' 

|- 
|| 03:41
|| Now we will specify the '''Feed stream '''properties. 

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|| 03:46
|| Go to '''Input Data.''' 

|- 
|| 03:48
|| Select '''Flash Spec '''as '''Temperature and Pressure (TP), '''if not already selected. 

|- 
|| 03:55
|| By default, '''Temperature and Pressure '''are already selected as '''Flash Spec.''' 

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||04:01
|| Change '''Temperature '''to '''30 degree Centigrade '''and press '''Enter.''' 

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||04:07
|| Change '''Pressure '''to '''3.5 bar '''and press '''Enter'''. 

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|| 04:13
|| Change '''Molar Flow '''to '''120 kmol/h '''and press '''Enter'''. 

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|| 04:20
|| Now, let us specify the '''feed stream compositions'''. 

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|| 04:25
|| Under '''Composition''', choose the '''Basis '''as '''Mole Fractions, '''if not already selected'''.''' 

|- 
|| 04:33
|| By default, '''Mole Fractions '''will be selected as '''Basis.''' 

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||04:38
|| For '''Ethanol''', enter the '''Amount '''as '''0.5 '''and press '''Enter'''. 

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|| 04:46
|| Similarly, for '''1-propanol''', enter it as '''0.5 '''and press '''Enter'''. 

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|| 04:54
|| On the right side, click on this green tick to '''Accept Changes.''' 

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||04:59
|| Now ,we will see how '''property package''' calculates '''phase equilibrium''' data of compounds. 

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|| 05:06
|| To do this, go to '''Utilities'''. 
 
|- 
|| 05:10
|| Click on '''Add Utility.''' 

|- 
|| 05:13
|| In the '''Add Utility '''window, under '''Object Type''', select '''Material Streams.''' 

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||05:20
|| Under '''Utility Type''', select '''Binary Phase Envelope.''' 

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|| 05:25
|| Under '''Flowsheet Object''', select '''Feed.''' 

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|| 05:29
|| At the bottom, click on the '''Add Utility''' button.

|- 
|| 05:34
|| '''Binary Phase Envelope''' window opens. 

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|| 05:37
|| Let us adjust the '''phase envelope window''' for better visibility. 

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|| 05:43
|| Enter '''Name''' as '''Txy-plot.''' 

|- 
|| 05:49
|| Go to '''Diagram Settings.''' 

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|| 05:52
|| Select '''Ethanol''' as '''Compound 1''', if not already selected. 

|- 
|| 05:57
|| By default, '''Ethanol''' is selected as '''Compound 1'''. 

|- 
|| 06:02
|| Make sure that the other '''compound''' is selected as '''Compound 2'''. 

|- 
|| 06:07
|| In this case, it is '''1-propanol''' which is '''Compound 2'''. 

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||  06:12
|| Select '''Envelope type''' as '''Txy''', if not already selected. 

|- 
|| 06:19
|| By default, '''Txy''' is selected as '''Envelope type'''. 

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|| 06:24
|| Select '''Txy Diagram Options''' as '''VLE''', if not already selected. 

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|| 06:31
|| By default, '''VLE''' is selected as '''Txy Diagram Options'''. 

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|| 06:36
|| Select '''X-Axis Basis''' as '''Mole Fraction''', if not already selected. 

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|| 06:43
|| By default, '''Mole Fraction''' is selected as '''X-Axis Basis''' 

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|| 06:48
|| Enter '''Pressure''' as '''1.013 bar.''' 

|- 
|| 06:53
|| Here we are going to plot a '''Txy''' diagram. 

|- 
|| 06:56
|| So, let's not worry about the '''pressure''' value. 

|- 
|| 07:00
|| Make sure that the '''property package''' is selected as '''Soave-Redlich-Kwong.''' 

|- 
|| 07:07
|| Now click on '''Calculate''' button at the bottom. 

|- 
|| 07:12
|| The diagram generated is a '''Txy''' diagram or '''Constant Pressure Phase Diagram'''. 

|- 
|| 07:19
|| '''X-axis''' indicates the '''mole fraction''' of '''Ethanol'''.
 
|- 
|| 07:23
|| '''Y -axis''' indicates the temperature range for which the '''VLE '''is generated. 

|- 
|| 07:29
|| The lower line of the '''envelope''' represents '''Bubble Point''' '''Curve.''' 

|- 
|| 07:34
|| Hover the '''mouse''' to the lower line at '''Ethanol mole fraction'''  of '''0.5.''' 

|- 
|| 07:40
|| We can see the '''bubble point temperature '''to be '''86.2853 degree  Centigrade.''' 

|- 
|| 07:47
|| For any mixture composition below this line, is '''subcooled liquid'''. 

|- 
|| 07:52
|| The upper line of the '''envelope''' represents '''Dew Point Curve.''' 

|- 
|| 07:57
|| Hover the mouse to the upper line at '''Ethanol mole fraction''' of '''0.5.''' 

|- 
|| 08:03
|| We can see the '''dew point temperature '''to be '''89.5881 degree Centigrade''' 

|- 
||08:10
|| For any mixture composition above this line, the mixture is '''superheated vapour'''. 

|- 
|| 08:16
|| The area enclosed between these two lines is the '''VLE''' region. 

|- 
|| 08:21
|| Here, both vapor and liquid phases exist in equilibrium. 

|- 
|| 08:26
|| We can see the '''bubble points''' and '''dew points''' at every composition. 

|- 
|| 08:32
|| For this, go to '''Results''' section and click on '''Table'''. 

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|| 08:37
|| Here we can see the corresponding '''mole fractions''' and '''temperatures '''values. 

|- 
|| 08:43
|| Let us now generate the '''xy''' plot for data obtained in the above '''Txy''' diagram. 

|- 
|| 08:49
|| Close this '''window'''. 

|- 
|| 08:53
|| Go to '''Utilities''' and click on '''Add Utility.''' 

|- 
||08:58
|| In the '''Add Utility '''window, under '''Object Type''', select '''Material Streams.''' 

|- 
|| 09:06
|| Under '''Utility Type''', select '''Binary Phase Envelope.''' 

|- 
|| 09:11
|| Under '''Flowsheet Object''', select '''Feed.''' 

|- 
|| 09:15
|| At the bottom, click on the '''Add Utility''' button.

|- 
|| 09:19
|| Once again, '''Binary Phase Envelope''' window opens. 

|- 
|| 09:23
|| Let us adjust the window for better visibility. 

|- 
|| 09:27
|| Enter '''Name''' as '''xy-plot.''' 

|- 
|| 09:32
|| Go to '''Diagram Settings.''' 

|- 
|| 09:35
|| Let the '''Compound''' settings be the default settings. 

|- 
|| 09:39
|| Select '''Envelope type''' as '''(T)xy.''' 

|- 
|| 09:44
|| Select '''X-Axis Basis''' as '''Mole Fraction''', if not already selected. 

|- 
|| 09:51
|| By default, '''Mole Fraction''' is selected as '''X-Axis Basis.''' 

|- 
|| 09:56
|| Enter '''Pressure''' as '''1.013 bar.''' 

|- 
|| 10:01
|| Now click on the '''Calculate '''button at the bottom. 

|- 
|| 10:05
|| The diagram is generated is called '''xy diagram.''' 

|- 
|| 10:09
|| '''X-axis''' indicates the '''mole fraction '''of '''Ethanol''' in liquid phase. 

|- 
|| 10:15
|| '''Y -axis''' indicates the '''mole fraction''' of '''Ethanol''' in vapour phase. 

|- 
|| 10:20
|| The upper curve is called '''Equilibrium Curve.''' 

|- 
|| 10:24
|| Hover the mouse to the upper line at '''Ethanol mole fraction '''of '''0.6.''' 

|- 
|| 10:30
|| We can see the vapour phase '''mole fraction''' of '''Ethanol''' to be '''0.7539.''' 

|- 
|| 10:37
|| Let us generate the '''Pxy''' plot now. 

|- 
|| 10:41
|| Close this window.

|- 
|| 10:45
|| Go to '''Utilities''' and click on '''Add Utility.''' 

|- 
||10:50
|| In the '''Add Utility '''window, under '''Object Type''', select '''Material Streams.''' 

|- 
||10:57
|| Under '''Utility Type''', select '''Binary Phase Envelope.''' 

|- 
|| 11:02
|| Under '''Flowsheet Object''', select '''Feed.''' 

|- 
|| 11:06
|| At the bottom, click on the '''Add Utility''' button.

|- 
||  11:10
|| Once again, '''Binary Phase Envelope''' window opens. 

|- 
|| 11:14
|| Let us adjust the window for better visibility. 

|- 
|| 11:18
|| Enter '''Name''' as '''Pxy-plot.''' 

|- 
|| 11:23
|| Go to '''Diagram Settings.''' 

|- 
|| 11:25
|| Let the '''Compound''' settings be the default settings. 

|- 
|| 11:29
|| Select '''Envelope type''' as '''Pxy.''' 

|- 
|| 11:33
|| Select '''X-Axis Basis''' as '''Mole Fraction''', if not already selected. 

|- 
|| 11:39
|| By default, '''Mole Fraction''' is selected as '''X-Axis Basis.''' 

|- 
||11:44
|| Enter '''Temperature''' as '''75 degree Centigrade.''' 

|- 
|| 11:49
|| Here, we are going to plot a '''Pxy '''diagram. 

|- 
|| 11:53
|| So, let us not worry about the '''temperature''' value. 

|- 
|| 11:57
|| Make sure that the property package is selected as '''Soave-Redlich-Kwong. ''' 

|- 
|| 12:03
|| Now, click on '''Calculate '''button at the bottom. 

|- 
|| 12:07
|| The diagram generated is a '''Pxy''' diagram or '''Constant Temperature Phase Diagram'''. 

|- 
|| 12:13
|| '''X-axis''' indicates the '''mole fraction''' of '''Ethanol'''. 

|- 
|| 12:17
|| '''Y -axis''' indicates the pressure range for which the '''VLE''' is generated. 

|- 
|| 12:23
|| The lower line of the envelope represents '''Dew Points'''. 

|- 
|| 12:28
|| Hover the mouse to the lower line at '''Ethanol mole fraction '''of '''0.4.''' 

|- 
|| 12:34
|| We can see the '''dew point pressure''' to be '''0.523 bar.''' 

|- 
|| 12:39
|| For any mixture composition below this line, is completely '''vapour.''' 

|- 
|| 12:45
|| The upper line of the envelope represents '''Bubble Points'''. 

|- 
|| 12:49
|| Hover the mouse to the upper line at '''Ethanol mole fraction '''of 0.8. 

|- 
|| 12:55
|| We can see the '''bubble point pressure''' to be '''0.782 bar.''' 

|- 
|| 13:01
|| For any mixture composition above this line, is completely '''liquid.''' 

|- 
|| 13:06
|| The area enclosed between these two lines is the '''VLE''' region. 

|- 
|| 13:11
|| Here, both vapor and liquid phases exist in equilibrium. 

|- 
|| 13:16
|| Now, go to '''Results''' section.  Click on '''Table'''. 

|- 
|| 13:21
|| Here we can see the corresponding '''mole fractions''' and '''pressure''' values.

|- 
|| 13:27
|| Let's summarize. 

|- 
||13:29
|| In this tutorial, we have learnt to generate:   '''Txy''' plot at given '''pressure''', 

|- 
|| 13:34
||  '''xy''' plot for the obtained '''Txy''' data, 

|- 
|| 13:38
||  '''Pxy''' plot at given '''temperature'''. 

|- 
|| 13:41
|| As an assignment, generate '''P(xy)''' plot for the '''Pxy''' data obtained. 

|- 
|| 13:47
|| Generate  '''P(xy)''' plot using '''NRTL '''model. 

|- 
|| 13:51
|| Compare the results. 

|- 
|| 13:53
|| Watch the video available at following link. 

|- 
|| 13:56
|| It summarizes the '''Spoken Tutorial''' project. 

|- 
||14:00
|| The Spoken Tutorial Project Team  conducts workshops and gives certificates. 

For more details, please write to us.

|- 
||14:09
|| Please post your times queries in this forum. 

|- 
|| 14:13
|| The '''FOSSEE '''team coordinates conversion of existing '''flow sheets''' into '''DWSIM'''. 

We give honorarium and certificates. 

|- 
|| 14:22
|| For more details, please visit this site. 

|- 
|| 14:26
|| The '''FOSSEE '''team coordinates coding of solved examples of popular books. 

|- 
|| 14:31
|| We give honorarium and certificates.  For more details, please visit this site. 

|- 
|| 14:37
|| The '''FOSSEE '''team helps migrate commercial simulator labs to '''DWSIM.''' 

|- 
|| 14:43
|| We give honorarium and certificates. For more details, please visit this site. 

|- 
||14:49
|| '''Spoken Tutorial '''and '''FOSSEE '''projects are funded by '''NMEICT, MHRD''', Government of India. 

|- 
|| 14:57
|| This tutorial is contributed by Kaushik Datta and Priyam Nayak. 

Thanks for joining. 
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|}