DWSIM/C3/Chemsep-Distillation-Column/English-timed
From Script | Spoken-Tutorial
| Time | Narration |
| 00:01 | Welcome to this tutorial on simulating a Chemsep Distillation Column in DWSIM. |
| 00:08 | In this tutorial, we will learn to
Specify properties of a Chemsep column and |
| 00:14 | Simulate a Distillation column |
| 00:17 | To record this tutorial, I am using
DWSIM 5. 8 (Classic UI) Update 3 and Windows 10 OS |
| 00:28 | But, this process is identical in Linux, Mac OS X or FOSSEE OS on ARM. |
| 00:36 | To practice this tutorial, you should know to- |
| 00:39 | Add components to a flowsheet |
| 00:42 | Select thermodynamic packages |
| 00:45 | Add material and energy streams and specify their properties. |
| 00:51 | The prerequisite tutorials are available on this website. |
| 00:56 | You can access these tutorials and all the associated files from this site. |
| 01:02 | DWSIM-Chemsep file used in the tutorial is provided as a Code file on this tutorial page. |
| 01:11 | Download the file from Code Files link. |
| 01:15 | We will develop a flowsheet to determine Outlet stream properties after Distillation. |
| 01:21 | Here we give Compounds, Thermodynamics and Inlet stream conditions. |
| 01:27 | I have taken this problem statement from a paper published in Chemical Engineering Science.
For reference, I am citing the paper here. |
| 01:37 | I have already opened DWSIM on my machine. |
| 01:41 | Go to File menu and click on Open File. |
| 01:46 | I have already downloaded and extracted the file on my Desktop.
Select the file from the Desktop. |
| 01:55 | Let us maximize the simulation window. |
| 01:58 | This file contains all material and energy streams necessary for this tutorial. |
| 02:05 | Now let us insert a Distillation Column into the flowsheet. |
| 02:09 | At the bottom of the main simulation window, go to CAPE-OPEN tab. |
| 02:15 | Click on the CAPE-OPEN Unit Operation displayed.
Drag and drop it to the flowsheet. |
| 02:21 | Add CAPE-OPEN Unit Operation window opens. |
| 02:24 | Select ChemSep from the displayed list of Unit Operations. |
| 02:30 | This list may vary depending on CAPE-OPEN Unit Operations that have been installed in your system. |
| 02:37 | At the bottom, click on the Ok button. |
| 02:41 | Let us now arrange it as required. |
| 02:44 | Click on the added CAPE-OPEN Unit Operation (COUO 005) |
| 02:49 | We will change the name of the object to Distillation Column. |
| 02:54 | First, we will connect the inlet feed streams. |
| 02:57 | Click on the Distillation Column. |
| 02:59 | Go to the left side of the window. |
| 03:01 | Under Connections, go to the Inlet section. |
| 03:06 | Click on the drop-down against feed and select Feed. |
| 03:12 | Click on Open CAPE-OPEN Object Editor button in the Object Property Editor window. |
| 03:17 | New Unit Operation pop-up window appears. |
| 03:20 | Click on the field against Unit Name and type Distillation Column. |
| 03:27 | We will specify the rest of the details in a while. |
| 03:31 | Click on the OK button at the bottom. |
| 03:34 | The ChemSep (CAPE-OPEN) -Distillation Column window will appear. |
| 03:39 | Click on CAPE-OPEN on the left side of the ChemSep window. |
| 03:44 | Under Distillation Column section, there is a checkbox against CAPE-OPEN Properties. |
| 03:51 | This checkbox is checked by default. |
| 03:55 | This checkbox is to indicate if the column is to be simulated with
the CAPE-OPEN thermodynamics or the native thermodynamics available with the column. |
| 04:05 | We will use the native thermodynamics available with the column. |
| 04:09 | So we will uncheck the checkbox against CAPE-OPEN Properties. |
| 04:15 | Next, we have Expose energy ports. |
| 04:19 | This is to indicate if the energy connection ports are to be exposed to connect them to energy stream. |
| 04:27 | This is needed if the energy streams are to be connected and used later for energy recycling.
Else it can be unchecked. |
| 04:37 | For demonstration purposes, let us see how to connect the energy streams. |
| 04:42 | Therefore, check the Expose energy ports check-box. |
| 04:47 | Click on Save problem to file button on the toolbar. |
| 04:52 | Close the ChemSep window by clicking the cross button at the top right corner of the window. |
| 04:58 | A pop-up appears, in which we will click Yes. |
| 05:03 | Now we will connect the outlet material streams with the column. |
| 05:08 | Click on the Distillation Column. |
| 05:10 | Go to the left side of the window.
Under Connections, go to Outlet section. |
| 05:17 | Then click on the drop-down against TopProduct and select Distillate. |
| 05:25 | Click on the drop-down against BottomProduct and select Bottoms. |
| 05:32 | Now we will connect the energy streams with the column. |
| 05:36 | Go to the Energy section.
Then click on the drop-down against Reboiler heat duty. |
| 05:43 | Select R-Duty. |
| 05:46 | Now click on the drop-down against Condenser heat duty.
Select C-Duty. |
| 05:54 | Now we will edit the properties of the Column. |
| 05:58 | Click on Open CAPE-OPEN Object Editor button. |
| 06:01 | The ChemSep window opens. |
| 06:04 | Click on Components on the left side of the ChemSep window. |
| 06:08 | We have already connected the feed streams to the column.
So the components are already listed here. |
| 06:15 | Click on Operation on the left side of the ChemSep window. |
| 06:20 | Under Select Type of Simulation section, Equilibrium column is selected by default. |
| 06:26 | We are simulating a distillation column which is an equilibrium operation.
So we will leave it as it is. |
| 06:34 | Now we will move to Configuration section. |
| 06:38 | Under Configuration, select Operation as Simple Distillation, if not already selected. |
| 06:44 | By default, Simple Distillation is already selected as Operation. |
| 06:50 | Select Condenser as Total Liquid Product, if not already selected. |
| 06:56 | By default, Total Liquid Product is already selected as Condenser. |
| 07:01 | Select Reboiler as Partial Liquid Product, if not already selected. |
| 07:06 | By default, Partial (Liquid Product) is already selected as Reboiler. |
| 07:11 | Next we will enter the Number of stages and Feed stage. |
| 07:16 | Type the Number of stages as 25 and press Enter. |
| 07:21 | A pop-up appears, in which we will click Yes. |
| 07:26 | Type the Feed stage as 11 and press Enter. |
| 07:30 | Click on Properties on the left side of the ChemSep window. |
| 07:36 | Here we will define the Thermodynamics, Physical Properties and Reactions taking place in the column. |
| 07:42 | First, we will define the Thermodynamics. |
| 07:46 | Click on the drop-down against K-value.
Select DECHEMA. |
| 07:53 | Next, click on the drop-down against Activity coefficient and select UNIFAC. |
| 08:01 | Next, click on the drop-down against Vapour pressure and select Antoine. |
| 08:08 | Next, click on the drop-down against Enthalpy and select Ideal. |
| 08:15 | There are no Physical Properties or Reactions to be defined.
So, we will not specify them. |
| 08:22 | Now click on Feeds. |
| 08:25 | The feed stream is already connected to the column. |
| 08:29 | So the feed stream properties are already displayed here.
We will not change anything. |
| 08:36 | Now we will see how to define Pressure Profiles in Chemsep Column. |
| 08:41 | Click on Pressures on the left side of the ChemSep window. |
| 08:46 | Click on drop-down against Column pressure. |
| 08:50 | Select the pressure profile to specify for the column depending on pressure data available.
By-default, Constant pressure is selected. |
| 09:00 | We will not change that as the column is operated at constant pressure. |
| 09:05 | Enter Condenser Pressure as 101325 Newton per meter sqaure |
| 09:13 | Enter Top Pressure as 101325 Newton per meter sqaure |
| 09:20 | Next click on Column Specs on the left side of the Chemsep window. |
| 09:26 | Go to Column Product Specifications section. |
| 09:29 | Select the Top specification as Reflux ratio, if not already selected. |
| 09:35 | By default, Reflux Ratio is already selected as Specification. |
| 09:40 | Beside that we can see a value field.
Here we will enter Reflux Ratio as 1.018 and press Enter. |
| 09:50 | Now select the Bottom specification as mole fraction of a component,
Enter the value as 0.01 and press Enter. |
| 10:02 | Below that, from the drop-down select Ethyl acetate. |
| 10:07 | Click on Save problem to file button on the toolbar. |
| 10:11 | Close the ChemSep window. |
| 10:14 | Now we will run the simulation. |
| 10:16 | To do this, click on Solve Flowsheet button on the toolbar. |
| 10:21 | When the calculations are completed, click on Distillate in the flowsheet. |
| 10:27 | From the Property Editor window, go to Input Data tab. |
| 10:31 | Under Compounds Amounts tab, we can see that the Ethyl Acetate composition is 0.999. |
| 10:40 | Let me save this simulation with the name Chemsep-Distillation. |
| 10:46 | Let's summarize. |
| 10:48 | In this tutorial, we have learnt to:
Specify properties of a Chemsep column and Simulate a Distillation column |
| 10:57 | As an assignment, repeat this simulation with different compounds.
Different feed conditions |
| 11:04 | Different Column Configuration |
| 11:07 | Watch the video available at the following link.
It summarizes the Spoken Tutorial project. |
| 11:13 | The Spoken Tutorial Project Team
Conducts workshops and Gives certificates. For more details, please write to us. |
| 11:21 | Please post your timed queries in this forum. |
| 11:25 | The FOSSEE team coordinates conversion of existing flow sheets into DWSIM. |
| 11:31 | We give honorarium and certificates for those who do this.
For more details, please visit this site. |
| 11:40 | The FOSSEE team helps migrate commercial simulator labs to DWSIM. |
| 11:46 | We give honorarium and certificates for those who do this.
For more details, please visit this site |
| 11:54 | Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India. |
| 12:03 | This tutorial is contributed by Kaushik Datta and Priyam Nayak.
Thanks for joining. |
