00:00that DWSIM software is installed on the computer.
00:06Step 1. Open DWSIM.
00:08From the desktop, select Start and then select Programs.
00:11Next, select DWSIM folder and then DWSIM.
00:15DWSIM welcome window appears as shown here.
00:20Step 2. Complete Simulation Configuration Wizard.
00:23As discussed earlier, a new simulation is started by initializing the Simulation Configuration Wizard
00:29by either clicking on the New Chemical Process Model under the File menu
00:34or by clicking the New Steady State Simulation button on the button strip
00:40or by clicking the link Create New Under Process Modeling seen on the welcome screen.
00:47An introduction window will open as shown.
00:50Click Next button to get the Compounds page.
00:52Start adding the components.
00:54Make sure that the components added are water, nitrogen, carbon dioxide, and acetic acid.
01:02Click Next to get the Property Package sheet.
01:05Select at least one property involved and click Add button.
01:08NRTL is the recommended package for this problem
01:11where NRTL stands for Non-Random 2-Liquid Method.
01:14Click the Next button to get the System of Units page.
01:18Select the units according to the problem statement
01:19one after another for all the properties given in the problem.
01:23For others, just leave it as it is.
01:26Make sure that the units per pressure as bar,
01:29temperature as degree Celsius,
01:31and mass flow rate as kg per hour are selected.
01:34Click Next to get the Behavior page.
01:36Then click on Activate Smart Object Solving
01:38and then click Finish button.
01:41This completes the simulation configuration
01:43and now it is ready to construct the flow sheet.
01:47Step 3. Draw the flow sheet.
01:49On the main flow sheet window,
01:51a flow sheet can be drawn by using process equipment models available.
01:55From the object palettes that appears at the bottom of the main flow sheet window,
01:59choose Column and then select Required Absorption slash Extraction Column.
02:04Drag and drop the absorption column on the flow sheet
02:07and double click on the objects and edit the names.
02:11Since Smart Object Solving is already selected,
02:14it will automatically add all the necessary feed, product, and energy streams associated with it
02:19but with the default names for the object and numbers for the streams.
02:24Here, the streams are renamed as Feed Gas, Fresh Solvent, Clean Gas, Spent Solvent,
02:31and the block is named as Absorber.
02:34Step 4. Provide Stream Information
02:36Just double click on the Feed Gas Stream
02:38to edit and enter all the properties from the problem statement.
02:42Note that there are two tabs, namely Stream Conditions and Compound Amounts.
02:46The basis and the unit must be checked thoroughly.
02:51Since the feed is a gaseous mixture,
02:53the vapor fraction by default is 1.
02:56Only temperature and pressure are available for the feed.
02:59Hence, the flash calculation type can be chosen as Temperature and Pressure, TP.
03:04Here, the stream conditions and compositions are entered as given in the problem statement.
03:09After entering the values in each field,
03:12press Enter key to save the values.
03:14Similarly, provide stream information for the fresh solvent also.
03:20Just double click on the Fresh Solvent Stream
03:22to edit and enter all the properties from the problem statement as shown on the screen.
03:28As only temperature and pressure are available for the feed,
03:31the flash calculation type can be chosen as Temperature and Pressure, TP.
03:36Note that there are two tabs, namely Stream Conditions and Compound Amounts as shown here.
03:42The basis and the units are checked thoroughly.
03:44Since the feed is a gaseous mixture, the vapor fraction by default is 1.
03:49The stream conditions and compositions are entered as given in the problem statement.
03:54Step 5. Configure the block.
03:56Double click on the block as Absorber and enter all the information as given here.
04:01Then, enter the number of stages as 6 and the condenser or top pressure as 1.01 bar as mentioned in the problem statement.
04:11Make sure that all the streams are connected properly.
04:15Under the Connection tab, choose the Stream Connection tab.
04:18Then, under the Feeds tab, select Fresh Solvent against column Feed Fort 1 and select Feed Gas against column Feed Fort 2.
04:29Similarly, under the Product tab, select Clean Gas against Top Product and Spend Solvent against Bottom Product as appearing on the screen.
04:38Next is to check the Stream Stage Association.
04:41Under the Connection tab, choose the Stream Stage Association tab.
04:46Then, select Top Stage against Press Solvent in Feed, Bottom Stage against Feed Gas in Feed, Top Stage against Clean Gas in Overhead Vapor, Bottom Stage against Spend Solvent in the Bottom Product.
04:59After entering the values in each field, press Enter key to save the values.
05:04The final step is to run the simulation and view the results.
05:08Once entering all the values, the message will automatically appear as the flow sheet was calculated successfully, which is displayed at the bottom of the screenshot.
05:16Since all the necessary information is completely provided in this case, the flow sheet is automatically calculated.
05:23Otherwise, the simulation can be run by clicking the Solve button, which will trigger an error message.
05:30On rectifying the errors, the flow sheet will be calculated successfully.
05:34As we had already discussed on how reports are generated, the results are tabulated using the Insert Table option from the Insert menu.
05:43Upon double-clicking the button generated, we have to choose the properties to display in the table.
05:49For the master property table, all the feed and product streams were chosen and the properties selected were temperature, pressure, mass and molar flow rates and molar fractions of n-propane, isobutane, isopentane and n-exane.
06:04These tables and process flow diagram can be moved by dragging or resizing by zooming in and out as per our need.
06:12Zooming can be done either through a mouse wheel or zoom button.
06:16Here, the PFD property table and master property tables were neatly arranged as shown.
06:22The simulation work can be saved and the results can be exported if required.
06:27The flow sheet or result table or any other graphics can be copied so that they can be pasted into any Microsoft Office applications as usual.
06:35If needed, any of the input data can be modified to rerun the simulation.
06:41With this, we have completed the second simulation.
06:44To find out how much carbon dioxide has been removed, read the result table and obtain the values of carbon dioxide mass flow rate in the feed and in the clean gas out.
06:56Percentage carbon dioxide removed is equal to 100 into initial carbon dioxide minus final carbon dioxide divided by initial carbon dioxide.
07:06On substituting these values, we get the removal percentage is 4.73%.
07:14Let us summarize what we have learned.
07:17We have discussed the steps involved in simulating an absorption column for the removal of carbon dioxide using DWCM software.
07:24By this, we have come to the end of this topic.
07:27Let us meet in another interesting session.
07:29Thank you, learners.
07:31Click on the learn button to know more and click on the try button to have and so on experience.
07:37Click on the learn button to download the hoping window and explore the material of carbon dioxide.
07:46Let you see there.
07:47Let us know …
07:48Welcome back to our next site.
07:49Please do something new.
07:50That we have surprised you, again, to say, you will receive value of carbon dioxide.
07:51Unless you are contenrecked now, the shadowh miro coronation is made up.
