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公开(公告)号：US10066030B2
公开(公告)日：2018-09-04
申请号：US15538501
申请日：2015-12-22
IPC分类号： C08F2/00 , C08F4/42 , C08F210/00 , C08F2/34 , C08F2/06 , C08F210/02 , C08F210/06 , C08F210/08 , C08F210/14 , C08F4/02 , C08F4/6192 , C08J11/02
摘要： The invention relates to a process for the polymerization of olefins comprising the comprising the steps of a. Polymerizing olefins in a reaction mixture comprising monomers, diluent, processing aids to prepare a product stream comprising polyolefins, monomers and diluent; b. Removing the polyolefins from the product stream to obtain a purge stream; c. Removing gaseous components from the purge stream to obtain a liquid fraction; d. Treating the liquid fraction with at least one ionic liquid to obtain a fraction containing unsaturated hydrocarbons; e. Recycling the fraction containing unsaturated hydrocarbons to the reaction mixture, optionally after purification of said fraction containing unsaturated hydrocarbons. The invention also relates to an olefin polymerization system comprising a polymerization reactor, a purge vessel, a vent gas recovery and an ionic liquid separator for separating liquid alkenes from liquid alkanes, wherein the liquid alkenes which are separated from the alkanes in the ionic liquid separator can be recycled to the polymerization reactor.
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公开(公告)号：US20180002458A1
公开(公告)日：2018-01-04
申请号：US15538501
申请日：2015-12-22
IPC分类号： C08F2/34 , C08F210/14 , C08F210/08 , C08F210/06 , C08F210/02 , C08F4/6192 , C08F4/02 , C08J11/02 , C08F2/06
CPC分类号： C08F2/34 , C08F2/04 , C08F2/06 , C08F2/12 , C08F2/18 , C08F4/022 , C08F4/61927 , C08F210/02 , C08F210/06 , C08F210/08 , C08F210/14 , C08J11/02 , Y02P20/582
摘要： The invention relates to a process for the polymerization of olefins comprising the comprising the steps of a. Polymerizing olefins in a reaction mixture comprising monomers, diluent, processing as aids to prepare a product stream comprising polyolefins, monomers and diluent; b. Removing the polyolefins from the product stream to obtain a purge stream; c. Removing gaseous components from the purge stream to obtain a liquid fraction; d. Treating the liquid fraction with at least one ionic liquid to obtain a fraction containing unsaturated hydrocarbons; e. Recycling the fraction containing unsaturated hydrocarbons to the reaction mixture, optionally after purification of said fraction containing unsaturated hydrocarbons. The invention also relates to an olefin polymerization system comprising a polymerization reactor, a purge vessel, a vent gas recovery and an ionic liquid separator for separating liquid alkenes from liquid alkanes, wherein the liquid alkenes which are separated from the alkanes in the ionic liquid separator can be recycled to the polymerization reactor.
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