Simulating the fractional condenser (ARS) in cryogenic separation demethanization using PROⅡ
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How can PRO2 be used to simulate the fractional distillation separator (ARS) in cryogenic separation? With just a cold box, there is only heat exchange and no mass exchange. If anyone has experience with this, please share some suggestions; I would be very grateful!
Can a separation tower be used in place of this?
Reply to 2# peixuemei: I’ve also considered it; there are two options: 1 is to use a series of heat exchangers and flash tanks, with the liquid in the flash tanks being combined at the end and treated as the liquid phase； 2 refers to using a tower as a substitute, as one set of fractional distillation separators can handle 10 to 15 theoretical plates; I’m not sure whether this approach of using a tower as a replacement is feasible. Does the expert on the 2nd floor also do ethylene separation?
Reply to 3# Elf: I’m not sure if there are any rules in place for you, but when we did it, we used a distillation column with 10–15 trays; the number of trays varies depending on the actual circumstances. I work with ethylene
Reply to 4# peixuemei: Oh, I’m also involved in ethylene separation; we can exchange ideas with each other. Currently, I’m using a distillation column as a substitute, with 12 theoretical plates.
Reply to 4# peixuemei: I have a question that has been bothering me for a long time and I’d like to ask the expert on floor 2 – regarding the handshake process. In the PRO2 simulation for cryogenic separation, there is only heat exchange; can the power of the refrigeration compressor be determined based on this heat exchange? How is it calculated? Thank you so much, I’m extremely grateful! I’m working on a thesis; it’s urgent, really urgent :dizzy:
Reply to 6# Elf: It should be possible to calculate it, but I don’t have much experience in this area. I’ve calculated for acrylic chillers before, but I didn’t get a final result. I didn’t go any further after that. Hehe, that’s great to meet a real professional in the field. May I ask which design institute you work at?
Reply to 7# peixuemei: I’m sorry, I was on a business trip the past couple of days. Add me on QQ; we can communicate and learn from each other* :) 463445921