There’s a problem with the wash tower in Aspen; I need experts to help solve it
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I’m currently working on rapid cooling of pyrolysis gas by using a water scrubber to reduce the temperature of the pyrolysis gas from 530°C to 300°C. Simulating this process with a distillation column doesn’t work, and Flash3 also isn’t suitable for this purpose; in Flash3, the water produced at 300°C is already vaporized. If a normal temperature is chosen, the temperature of the pyrolysis gas drops too low :( I would be extremely grateful if experts could provide some guidance.
I think this one should be washed with oil; when the temperature drops from 300 to 45 degrees, it can then be washed with water
The amount of pyrolysis gas isn’t large; I’m struggling with the dryer. If it is water-cooled, then the water vaporizes and moves along with the stream; it is cooled, liquefied, and separated, followed by deep cryogenic separation of the pyrolysis gas. In this case, a dryer is not necessary. The simulations related to the water scrubber haven’t been resolved yet, so I can only use a heat exchanger as a substitute.
What is washed with a water wash tower? If there are solids present, a solid module must be used to address that issue; otherwise, a mixed-cooling heat exchanger module will suffice.
In the end, I used a heat exchanger to replace the simulation; thanks anyway.