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公开(公告)号：US20180214814A1
公开(公告)日：2018-08-02
申请号：US15322503
申请日：2015-06-29
Applicant: SHELL OIL COMPANY
IPC: B01D53/047 , C07C7/12 , C07C7/13
CPC classification number: B01D53/047 , B01D2253/102 , B01D2253/108 , B01D2256/245 , B01D2257/102 , B01D2257/108 , B01D2257/502 , B01D2257/504 , B01D2257/7022 , C07C7/12 , C07C7/13 , Y02C10/08 , Y02P20/152 , Y02P20/51 , C07C9/04 , C07C11/04
Abstract: The invention relates to a process for recovering methane from a gas stream comprising methane and ethylene, comprising: a sorption step which comprises contacting the gas stream comprising methane and ethylene with a sorption agent which has a lower affinity for methane than for ethylene, wherein the gas stream comprising methane and ethylene also comprises a compound for which the sorption agent has a lower affinity than for methane and ethylene, resulting in sorption of ethylene and methane by the sorption agent and in a gas stream comprising the compound for which the sorption agent has a lower affinity than for methane and ethylene; a first desorption step which comprises desorbing part of the sorbed methane resulting in a gas stream comprising methane in an amount of 1 to 99.9% based on the amount of methane in the gas stream that is subjected to the sorption step; and a second desorption step which comprises desorbing sorbed compounds resulting in a gas stream comprising the desorbed compounds.
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公开(公告)号：US20170106327A1
公开(公告)日：2017-04-20
申请号：US15311872
申请日：2015-05-18
Applicant: SHELL OIL COMPANY
CPC classification number: B01D53/047 , B01D3/14 , B01D53/04 , B01D2256/245 , B01D2257/7022 , C07C7/005 , C07C7/04 , C07C7/11 , C07C7/12 , C07C7/13 , C10G70/041 , C10G70/046 , Y02C10/08 , C07C9/04
Abstract: The invention relates to a process for recovering methane from a gas stream comprising methane and ethylene, comprising: a sorption step which comprises contacting the gas stream comprising methane and ethylene with a sorption agent which has a lower affinity for methane than for ethylene, resulting in sorption of ethylene and part of the methane by the sorption agent and in a gas stream comprising methane; a rinse step which comprises contacting a gas stream, comprising a compound for which the sorption agent has a higher affinity than for methane, with the sorption agent containing sorbed ethylene and methane, resulting in sorption of the compound for which the sorption agent has a higher affinity than for methane by the sorption agent, in desorption of methane from the sorption agent and in a gas stream comprising methane; and a desorption step which comprises desorbing sorbed ethylene and the sorbed compound for which the sorption agent has a higher affinity than for methane resulting in a gas stream comprising ethylene and the compound for which the sorption agent has a higher affinity than for methane.
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