DWSIM/C2/Gibbs-Reactor/English-timed

Time	Narration
00:01	Welcome to this tutorial on simulating a Gibbs Reactor in DWSIM.
00:07	In this tutorial, we will learn to:
00:10	Simulate a Gibbs Reactor
00:13	Use different Minimization Methods
00:16	Calculate Conversion percentage and Reaction extent
00:20	Compare Equilibrium and Gibbs Reactor values
00:24	To record this tutorial, I am using DWSIM 5.2 (Classic UI) update 22 and Windows 10
00:34	The process demonstrated in this tutorial is identical in other OS also such as- Linux, Mac OS X or FOSSEE OS on ARM.
00:46	To practice this tutorial, you should know to-
00:49	Add components to a flowsheet
00:52	Select thermodynamic packages
00:56	Add material and energy streams and specify their properties
01:01	The prerequisite tutorials are mentioned on our website
01:06	You can access these tutorials and all the associated files from this site.
01:12	Here we can see the problem statement of the earlier tutorial.
01:17	This was solved using Equilibrium Reactor.
01:21	Let us open the corresponding file in DWSIM.
01:25	I have already opened DWSIM on my machine.
01:30	I have already opened Equilibrium underscore reactor dot dwxmz file.
01:37	This file can also be downloaded from the Code files link.
01:42	Let me save this as Gibbs underscore reactor.
01:48	You can see that the file name has changed now to Gibbs underscore reactor.
01:54	We will solve the same problem using Gibbs Reactor as solved in Equilibrium Reactor. And compare results with that solved in Equilibrium Reactor.
02:05	Let us begin by replacing the Equilibrium Reactor with a Gibbs Reactor.
02:10	Right click on the Equilibrium Reactor and select Delete.
02:16	Click Yes to the prompt Delete Equilibrium Reactor.
02:20	Now let us insert a Gibbs Reactor into the flowsheet.
02:25	Go to Flowsheet Objects.
02:28	In the Filter List tab, type Gibbs Reactor.
02:32	Drag and drop it to the flowsheet in the place of Equilibrium Reactor.
02:37	Let us now arrange it as required.
02:41	The reaction required to simulate Gibbs Reactor is already present.
02:47	This is because the reaction was already defined while simulating the Equilibrium Reactor.
02:54	So we need not define any new reaction.
02:58	We are now ready to specify the Gibbs Reactor. So let’s click on it.
03:05	On the left, we can see a tab displaying properties related to the Gibbs Reactor.
03:11	Under Connections, click on the drop-down against Inlet Stream and select Feed.
03:19	Next, click on the drop-down against Outlet Stream 1 and select Vapour Product.
03:27	Then, click on the drop-down against Outlet Stream 2 and select Liquid Product.
03:35	After this, click on the drop-down against Energy Stream and select Energy.
03:43	Now go to the next section, Calculation Parameters.
03:47	Under the tab Parameters, the first option is Reaction Set. By default, it is Default Set.
03:56	Next, click on the drop-down against Calculation Mode.
04:00	Select Define Outlet Temperature.
04:03	Next, click on the drop-down against Minimization Method.
04:08	Select Calculate Reaction Extents.
04:12	This procedure is similar to Equilibrium Reactor.
04:16	Enter 225 degree C against Outlet Temperature.
04:22	Next, click on Compounds tab.
04:25	This is to indicate the compounds that will react in the reaction.
04:30	Under Compounds, check all the boxes against all the compounds.
04:36	Now we will run the simulation.
04:39	So, from the toolbar, click on Solve Flowsheet button.
04:44	When the calculations are completed, click on the Gibbs Reactor in the flowsheet.
04:50	Go to the Property Editor Window of the Gibbs Reactor. Locate the Results section.
04:57	Under the Reactions tab, check Extent. It is 20.043.
05:03	This is the extent of the water gas shift reaction at 225 degree Centigrade.
05:09	For the Equilibrium Reactor, it was 20.043 as well.
05:14	Now, go to Conversions tab.
05:17	We will look into the individual conversion of all the reactants.
05:22	Here for Carbon monoxide, the conversion is 92.2478% and for Water, it is 92.2478%.
05:34	For the Equilibrium Reactor, the conversions for both the compounds were 92.2478% as well.
05:42	Let us now redo the simulation with the other available Minimization Method.
05:47	This Minimization Method is called Direct Gibbs Energy Minimization.
05:52	Let us go back to the slides.
05:55	In this method, Equilibrium composition for the final Gibbs energy is at minimum.
06:01	This method does not use any reaction to calculate the Gibbs energy.
06:06	Rather it uses an Element Matrix that we are going to define later.
06:12	Let us verify this.
06:15	The default reaction which is already set, has a reaction in it.
06:20	So, let’s create a reaction set with no reaction.
06:25	Under Tools, click on Reactions Manager.
06:30	Chemical Reactions Manager window opens.
06:34	Under Reaction Sets tab, click on the green coloured Add New Reaction Set button.
06:40	DWSIM – Reaction Set Editor window opens.
06:45	Under Identification, enter the Name as No Reaction.
06:51	At the bottom, click on OK button.
06:54	And then close the Chemical Reactions Manager window.
06:59	Now press Solve Flowsheet button.
07:02	A reaction set with no reaction is created.
07:06	Note that, this step of creating a reaction set with no reaction is not required.
07:12	I am doing this to demonstrate that Direct Gibbs Energy Minimization method works without any reaction.
07:19	Once again click on the Gibbs Reactor.
07:23	Go to Calculation Parameters section.
07:26	Then click on the drop-down against Reaction Set and select No Reaction.
07:34	There will be no change in Calculation Mode.
07:38	It will remain the same as Define Outlet Temperature.
07:42	Next, click on the drop-down against Minimization Method.
07:48	Select Direct Gibbs Energy Minimization.
07:52	Again, there will be no change in Outlet Temperature.
07:56	It will remain as 225 degree Centigrade.
08:00	After this, go to Compounds tab.
08:04	Note that, all the checkboxes are already selected.
08:09	Now go to Elements tab.
08:12	In this tab, we will enter the required elements for the reaction.
08:17	They are Hydrogen. Oxygen and Carbon.
08:22	We will also specify the number of elements present in the selected compounds.
08:28	Under Configuration, click on Add Element three times.
08:34	Under Matrix, we can see that three blank rows has been inserted.
08:40	For the first blank row, enter H for Hydrogen.
08:45	For the next blank row, enter O for Oxygen.
08:50	For the last blank row, enter C for Carbon.
08:55	All the elements have been added.
08:58	Now, we will enter the number of elements for all the selected compounds.
09:04	Under Carbon monoxide column, enter: 0 for H, 1 for O, and 1 for C. Then press Enter.
09:16	Similarly, under Water column, enter: 2 for H, 1 for O, and 0 for C. Then press Enter.
09:29	Next, under Hydrogen column, enter: 2 for H, 0 for O, and 0 for C. Then press Enter.
09:40	Similarly, under Carbon dioxide column, enter: 0 for H, 2 for O, and 1 for C. Then press Enter.
09:54	Click on Save Changes button.
09:57	The element matrix is now complete.
10:00	Now we will run the simulation.
10:03	So, from the toolbar, click on Solve Flowsheet button.
10:08	When the calculations are completed, click on the Gibbs Reactor in the flowsheet.
10:14	Go to the Property Editor Window of the Gibbs Reactor. Locate the Results section.
10:21	Under Conversions tab, check the individual compounds conversion.
10:26	Here for Carbon monoxide, the conversion is 92.2478% and for Water, it is 92.2478%.
10:38	In all the above explained methods, conversions for both the compounds was found to be 92.2478%
10:47	Let's summarize.
10:49	In this tutorial, we have learnt to Simulate a Gibbs Reactor, Use different Minimization Methods, Calculate Conversion percentage and Reaction extent, Compare Equilibrium and Gibbs Reactor values
11:05	As an assignment, Repeat this simulation with different compounds and thermodynamics.
11:12	Different feed conditions , Different Minimization Methods
11:17	Watch the video available at the following link. It summarizes the Spoken Tutorial project.
11:24	The Spoken Tutorial Project Team conducts workshops and gives certificates. For more details, please write to us.
11:33	Please post your times queries in this forum.
11:37	The FOSSEE team coordinates conversion of existing flowsheets into DWSIM.
11:43	We give honorarium and certificates. For more details, please visit this site.
11:50	The FOSSEE team coordinates coding of solved examples of popular books.
11:56	We give honorarium and certificates. For more details, please visit this site.
12:03	The FOSSEE team helps migrate commercial simulator labs to DWSIM.
12:10	We give honorarium and certificates. For more details, please visit this site.
12:16	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
12:25	This tutorial is contributed by Kaushik Datta and Priyam Nayak. Thanks for joining.

Contributors and Content Editors

PoojaMoolya