Equipment in the ethylene process
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Let’s discuss which processes in the ethylene production process involve the use of refrigeration or vacuum pumping devices. I hope everyone will actively share their opinions!
1. Refrigeration units: In cryogenic separation, propylene refrigeration compressors, ethylene refrigeration compressors, and methane refrigeration compressors are used; binary and ternary refrigeration compressors are also employed. There is also throttling expansion refrigeration. 2 Vacuum pumping units: a vacuum pumping system for the triple-machine rehydration process, and a vacuum pumping system for the nine-column decarburization unit in the pyrolytic gasoline hydrogenation plant.
Reply to 2# Front-line employee: Thank you! Could you tell me what specific processes these belong to?
Lummus SW, KBR, Linder – these patent holders all use the above technology.
Regardless of the process, whenever light hydrocarbon separation is involved, cryogenic units are generally used.
Reply to 3# Heartless Wanderer: All ethylene production processes around the world currently require the cooling and vacuuming methods mentioned above, unless it is a back-pressure turbine. As a supplementary note: the isothermal carbon dioxide hydrogenation reactor here also makes use of vacuum pumping and a methanol temperature control system.
Reply 6# yy1007 Linder process?
In current S&W pre-depropanization pre-hydrogenation processes, isentropic expansion refrigeration using expanders and recompressors is employed, resulting in higher efficiency compared to isenthalpic expansion via throttling