DWSIM/C2/Conversion-Reactor/English-timed

Time	Narration
00:01	Welcome to this tutorial on simulating a Conversion Reactor in DWSIM.
00:07	In this tutorial, we will learn to:
00:10	Define a Conversion Reaction
00:13	Simulate a Conversion Reactor
00:16	Calculate Conversion percentage from Conversion function
00:21	To record this tutorial, I am using DWSIM 5.2 (Classic UI) and Windows 10
00:31	The process demonstrated in this tutorial is identical in other OS also such as- Linux, Mac OS X or FOSSEE OS on ARM.
00:43	To practice this tutorial, you should know to-
00:47	Add components to a flowsheet.
00:50	Select thermodynamic packages.
00:53	Add material and energy streams and specify their properties.
00:58	The prerequisite tutorials are mentioned on our website.
01:03	You can access these tutorials and all the associated files from this site.
01:09	We will develop a flowsheet to determine the exit composition from an isothermal Conversion Reactor.
01:17	Here we give Reaction, Property Package and Inlet Stream Conditions.
01:23	Next, we give Reaction Parameter and Reaction Conversion.
01:28	I have already opened DWSIM on my machine.
01:33	Go to File menu and select New Steady-state Simulation.
01:40	Simulation Configuration Wizard window appears.
01:44	At the bottom, click on the Next button.
01:48	Now, in the Compounds Search tab, type Carbon monoxide.
01:54	Select Carbon monoxide from ChemSep database.
01:58	Similarly, add Hydrogen.
02:02	Next, add Methanol.
02:05	And then at the bottom, click on the Next button.
02:10	The Property Packages opens.
02:13	From Available Property Packages list, double-click on Raoult’s Law.
02:19	Then click on the Next button.
02:23	We are moved to a new window named Flash Algorithm.
02:28	From Default Flash Algorithm select Nested Loops(VLE)
02:35	Click on the Next button.
02:38	The next option is System of Units.
02:42	Under System of Units, we will select C5.
02:47	Then at the bottom, click on the Finish button.
02:52	Let us now maximize the simulation window.
02:56	Now let’s insert a feed stream that enters the Conversion Reactor.
03:01	On the right hand side of the main simulation window, go to Flowsheet Objects.
03:08	In the Filter List tab, type Material Stream.
03:13	From the displayed list, drag and drop a Material Stream to the Flowsheet.
03:19	Let’s change the name of this stream to Feed.
03:24	Now we will specify the Feed stream properties.
03:29	Go to Input Data.
03:32	Select Flash Spec as Temperature and Pressure (TP), if not already selected.
03:38	default, Temperature and Pressure are already selected as Flash Spec.
03:45	Change Temperature to 320 degree Centigrade and press Enter.
03:52	Change Pressure to 70 bar and press Enter.
03:58	Change Mass Flow to 1500 kg per hour and press Enter.
04:04	Now let us specify the feed stream compositions.
04:09	Under Composition, choose the Basis as Mole Fractions, if not already selected.
04:18	By default, Mole Fractions is already selected as Basis.
04:24	Now for Carbon monoxide, enter the Amount as 0.2 and press Enter.
04:33	For Hydrogen, enter 0.8 and press Enter.
04:40	Similarly, for Methanol, enter 0 and press Enter.
04:47	On the right, click on this green tick to Accept Changes.
04:52	Next, we will define the Conversion Reaction.
04:56	Under Tools, click on Reactions Manager.
05:02	Chemical Reactions Manager window opens.
05:06	Under Chemical Reactions tab, click on the green coloured Add Reaction button.
05:13	Then click on Conversion.
05:16	Add New Conversion Reaction window opens.
05:20	Under Identification, enter the Name as Methanol Synthesis.
05:27	Now let’s enter the Description.
05:31	“Synthesis of Methanol from Carbon monoxide and Hydrogen.”
05:37	Next part is a table of Components/Stoichiometry.
05:42	The first column Name shows the available components here.
05:47	The second column corresponds to its Molar Weight.
05:51	The next column is Include. Under Include, check all the check-boxes.
05:58	The fourth column is BC.
06:01	Under BC, check the Carbon monoxide check box as conversion is defined in terms of Carbon monoxide.
06:10	Next column is Stoichiometric coefficients
06:14	Under Stoichiometric coefficients column, enter: -1 for Carbon monoxide , -2 for Hydrogen and 1 for Methanol. Then press Enter.
06:29	In the Stoichiometry field, we can see it shows OK.
06:34	So the reaction is balanced after entering the stoichiometric coefficients.
06:40	Here the Equation field shows the reaction equation.
06:45	Then comes Conversion Reactions Parameters.
06:49	The Base comp is already indicated as Carbon monoxide.
06:54	Select Phase as Vapor.
06:58	Now go to Conversion.
07:01	In a Conversion Reaction, conversion can be defined in two ways.
07:06	First, conversion is defined directly as percentage (%).
07:11	Suppose, it is provided that reactant undergoes 50% conversion.
07:18	Then we have to enter 50 against Conversion.
07:23	Secondly, conversion can be defined as a function of temperature.
07:29	As per the problem statement, conversion function is given as 267.45 minus 0.591 into T where T is in degree Celsius.
07:45	But in the reaction manager, it can be seen that T is in Kelvin.
07:51	So we will modify the function and enter the conversion as 267.45 minus 0.591 into in bracket T minus 273.15
08:08	This “-273.15” is to incorporate the change in temperature from Kelvin to Degree Celsius.
08:17	At the bottom, Click on OK button. And then close the Chemical Reactions Manager window.
08:25	Now let us insert a Conversion Reactor to the flowsheet.
08:30	Go to Flowsheet Objects.
08:33	In the Filter List tab, type Conversion Reactor. Drag and drop it to the flowsheet.
08:42	Let us now arrange it as required.
08:47	And name this reactor as Conversion Reactor.
08:51	Now let’s insert two more material streams that exit the Conversion Reactor.
08:58	To do that, let us drag one Material Stream to the flowsheet.
09:03	Let us now arrange it.
09:06	We will leave that stream as unspecified.
09:10	Then we will change the name of this stream to Vapour Product.
09:16	Next, we will insert another Material Stream.
09:20	Let us once again arrange it.
09:23	Leave that stream as unspecified. And name this stream as Liquid Product
09:30	Next, we will insert one Energy Stream. And name this stream as Energy.
09:39	We are now ready to specify the Conversion Reactor. So let’s click on it.
09:47	On the left, we can see a tab displaying properties related to Conversion Reactor.
09:54	Under Connections, click on the drop-down against Inlet Stream. And select Feed.
10:02	Next, click on the drop-down against Outlet Stream 1 and select Vapour Product.
10:10	Next, click on the drop-down against Outlet Stream 2 and select Liquid Product.
10:18	Then click on the drop-down against Energy Stream and select Energy.
10:26	Now go to the next section, Calculation Parameters.
10:31	Here, the first option is Reaction Set. By default, it is Default Set.
10:37	Next, click on the drop-down against Calculation Mode and select Isothermic.
10:45	Now we will run the simulation.
10:48	So, from the toolbar, click on Solve Flowsheet button.
10:53	When the calculations are completed, click on the Conversion Reactor in the flowsheet.
11:00	Go to the Property Editor Window of the Conversion Reactor.
11:06	Locate Results section.
11:08	Under the Reactions tab, check Conversion. It is 78.33 %.
11:16	This is the conversion of the base component of the reaction.
11:21	In this case, it is conversion of Carbon monoxide.
11:26	Now, go to Conversions tab. We will look into the individual conversion of all the reactants.
11:34	Here for Carbon monoxide, the conversion is 78.33% and for Hydrogen, it is 39.16%.
11:45	Now, go to Insert menu and select Master Property Table.
11:52	Double-click on the Master Property Table.
11:56	Configure Master Property Table window opens.
12:00	Enter Name as Stream Wise Results.
12:04	Enter Object Type as Material Stream. By default, Material Stream is already selected. So we will not change it.
12:14	Under Properties to display, select Object as Feed, Vapour Product and Liquid Product.
12:24	Under Property, scroll down to see all the parameters.
12:30	Now select the properties as Temperature , Pressure , Mass Flow
12:39	Molar Flow
12:42	Molar Fraction (Mixture) / Carbon monoxide
12:46	Molar Flow (Mixture) / Carbon monoxide
12:51	Molar Fraction (Mixture) / Hydrogen
12:55	Molar Flow (Mixture) / Hydrogen
13:00	Molar Fraction (Mixture) / Methanol
13:04	Molar Flow (Mixture) / Methanol
13:08	Let’s close this window.
13:11	Move the Master Property Table for better visibility.
13:16	Here, we can see the corresponding results for Vapour Product, Liquid Product and Feed.
13:26	The reaction is a Vapour Phase reaction.
13:29	So, we can see that Liquid Product stream shows zero flow rate and composition.
13:36	Let's summarize.
13:38	In this tutorial, we have learnt to Define a Conversion Reaction, Simulate a Conversion Reactor, Calculate Conversion percentage from Conversion function
13:51	As an assignment, Repeat this simulation with different compounds and different Conversion
13:59	Different Property Package, Different feed conditions
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15:11	This tutorial is contributed by Kaushik Datta and Priyam Nayak. Thanks for joining.

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