How does this absorption process work? ! !
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I want to use an absorption tower to separate dimethyl carbonate from methanol; water is allowed to flow out from the top of the tower, where it absorbs the methanol, thereby separating dimethyl carbonate. However, in the ASPEN model, the tower is shown to have only one feed stream. I’m not sure how to simulate this process. I’m new to ASPEN, so I hope someone experienced can give me some guidance
Aspen has modules for absorption towers. . Absorber – find it by yourself~~
I can’t find the model I want; there is only one feed stream, no such model exists, and there is an inlet at the top of the tower
Using the RADFRAC model, one feed can be connected to several streams.
Use the radfrac module; this provides accurate calculations for tower equipment.
A bright area can be connected to several logistics lines; give it another try
But this feed inlet is located in the middle of the tower equipment. The process requirement is that water flows in from above, and separation is achieved by taking advantage of the different solubilities of methanol and DMC in water. If water enters through the feed inlet in the middle, it will have an impact
Use radfrac; you can choose any number of feed points – the same goes for discharge points. Side-line discharge is also possible. You can define where feed and discharge occur as you see fit. Define the feed and discharge plates when specifying the subsequent tray levels.
The fellow travelers upstairs explained it very well. The Radfrac module allows for multi-stream feeding as well as side-stream extraction.
That logistics arrow can be positioned anywhere. Click on the logistics arrow indicating material inflow at the tower; it won’t move. Drag it to the desired position at the top of the tower, release the mouse, and then drag the logistics arrow again