Ethylene separation with pressure swing adsorption
Номер патента: EP3207005A1
Опубликовано: 23-08-2017
Автор(ы): Ai-Fu Chang, Lei Ji
Принадлежит: Chevron Phillips Chemical Co LP
Опубликовано: 23-08-2017
Автор(ы): Ai-Fu Chang, Lei Ji
Принадлежит: Chevron Phillips Chemical Co LP
Реферат: A process for component separation in a polymer production system comprising: (a) separating a polymerization product into a gas stream and a polymer stream; (b) processing the gas stream in distillation columns to yield a light hydrocarbon stream (LHS) comprising ethylene and ethane; (c) contacting LHS with a purged hydrocarbon adsorber to yield a loaded hydrocarbon adsorber and a non-adsorbed gas stream, wherein ethane is adsorbed by the purged hydrocarbon adsorber at a first pressure to yield adsorbed ethane, and wherein the non-adsorbed gas stream comprises recovered ethylene; (d) contacting the loaded hydrocarbon adsorber with a sweeping gas stream at a second pressure to yield an unloaded hydrocarbon adsorber and a recovered adsorbed gas stream comprising the sweeping gas stream and desorbed ethane; and (e) contacting the unloaded hydrocarbon adsorber with the sweeping gas stream at the first pressure to yield the purged hydrocarbon adsorber and a spent sweeping gas.
Ethylene separation with pressure swing adsorption
Номер патента: US9108891B1. Автор: Lei Ji,Ai-Fu Chang. Владелец: Chevron Phillips Chemical Co LLC. Дата публикации: 2015-08-18.