Seeking assistance with Aspen Level 3 absorption tower simulation
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When simulating a three-stage absorption tower, the following error occurred. How can it be resolved? Thank you. *** SEVERE ERROR: A liquid feed/pump return to the top stage is required when “Q1=0” is specified in “COL-SPECS”; the required feed/pump return has zero flow. * WARNING: The rest of the block is bypassed due to this severe error.
In other words, once you add the constraints to the tower, there is no flow at the first tray. So you need to adjust the tower’s specs again
What exactly does the “spec” of a tower refer to? I don’t have any design specifications
According to the message, there is no flow of feed/reflux for the first plate; can a file be uploaded?
You have set it without a condenser; therefore, the feed must be on the first plate, otherwise an error message will be displayed
Change \"above stage\" to \"on stage\"
I simulated dual-tower desulfurization, and the same problem occurred in the first pre-washing tower; even after changing it to on-stage mode, the issue persisted
I simulated dual-tower desulfurization, and the same problem occurred in the first pre-washing tower; even after changing it to on-stage mode, the issue persisted