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膜分离回收乙烯技术近几年在国内乙二醇行业广泛运用,其基本原理是利用了特殊的高分子膜对乙烯优先透过性的特点,让乙烯、氩气、氮气的混合气在一定的压差推动下,经选择性透过膜,使混合气中的乙烯优先透过膜得以富集回收,而氮气、氩气等则被选择性地截留,从而达到分离的目的。扬子石化结合乙二醇联合装置运行实际,经过技术改造,新增一套膜分离回收乙烯单元,实现了有效回收乙二醇尾气中的乙烯成分,变废为宝。11月7日,随着膜回收单元进气阀的开启,扬子石化乙二醇装置的排放气源源不断进入膜回收单元,标志着
Membrane separation and recovery of ethylene technology in recent years widely used in the domestic ethylene glycol industry, the basic principle is the use of a special polymer membrane of ethylene preferential permeability characteristics of ethylene, argon, nitrogen gas mixture in a certain Pressure-driven, the selective transmission through the membrane, the ethylene in the gas mixture preferentially through the membrane enrichment and recovery, while nitrogen, argon, etc. are selectively intercepted, so as to achieve the purpose of separation. Yangzi Petrochemical combined with the actual operation of ethylene glycol unit, after technological innovation, a new membrane separation and recovery of ethylene units, ethylene glycol to achieve an effective recovery of ethylene components in the exhaust, turning waste into treasure. November 7, with the film recovery unit intake valve is opened, the Yangtze Petrochemical ethylene glycol plant emissions continue to enter the membrane recovery unit, marking