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公开(公告)号：US09428597B2
公开(公告)日：2016-08-30
申请号：US14771355
申请日：2014-03-04
发明人： Terri A Price , Fazle Sibtain , Eric Cheluget
CPC分类号： C08F10/02 , C08F6/003 , C08F6/02 , C08J11/02 , C08L23/04 , C08F2/01 , C08F2/06 , C08F210/16 , C08F210/14
摘要： An improved solution polymerization process wherein energy consumption is reduced comprising: i) injecting ethylene, solvent, catalyst, α-olefins and hydrogen into at least one reactor to produce a polyethylene in a single liquid phase solution; ii) deactivating the single liquid phase solution; iii) passing the deactivated solution into a vapor/liquid separator forming a bottom stream of polyethylene rich solvent and a gaseous overhead stream; iv) passing not more than 40% of the gaseous overhead stream to distillation; v) condensing the remainder of the gaseous overhead stream to form a recycle stream, while generating low pressure steam; vi) passing the recycle stream through a means for oligomer removal; vii) passing the recycle stream through a lights separator; viii) passing the recycle stream through a purification step; ix) collecting the recycle stream in a recycle drum, passing the recycle stream through a pump and injecting a high pressure recycle stream into said reactors.
摘要翻译： 改进的溶液聚合方法，其中能量消耗降低，包括：i）将乙烯，溶剂，催化剂，α-烯烃和氢气注入至少一个反应器中以在单一液相溶液中制备聚乙烯; ii）使单一液相溶液失活; iii）将失活的溶液通入形成富含聚乙烯的溶剂和气态塔顶液流的底部流的气/液分离器; iv）将不超过40％的塔顶气流送入蒸馏; v）冷凝剩余的气态塔顶物流以形成循环流，同时产生低压蒸汽; vi）使再循环流通过用于低聚物去除的装置; vii）使循环流通过灯分离器; viii）使循环流通过净化步骤; ix）在再循环鼓中收集循环物流，使循环流通过泵并将高压循环物流注入所述反应器。
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公开(公告)号：US20160002370A1
公开(公告)日：2016-01-07
申请号：US14771355
申请日：2014-03-04
发明人： Terri A Price , Fazle Sibtain , Eric Cheluget
IPC分类号： C08F10/02
CPC分类号： C08F10/02 , C08F6/003 , C08F6/02 , C08J11/02 , C08L23/04 , C08F2/01 , C08F2/06 , C08F210/16 , C08F210/14
摘要： An improved solution polymerization process wherein energy consumption is reduced comprising: i) injecting ethylene, solvent, catalyst, α-olefins and hydrogen into at least one reactor to produce a polyethylene in a single liquid phase solution; ii) deactivating the single liquid phase solution; iii) passing the deactivated solution into a vapor/liquid separator forming a bottom stream of polyethylene rich solvent and a gaseous overhead stream; iv) passing not more than 40% of the gaseous overhead stream to distillation; v) condensing the remainder of the gaseous overhead stream to form a recycle stream, while generating low pressure steam; vi) passing the recycle stream through a means for oligomer removal; vii) passing the recycle stream through a lights separator; viii) passing the recycle stream through a purification step; ix) collecting the recycle stream in a recycle drum, passing the recycle stream through a pump and injecting a high pressure recycle stream into said reactors.
摘要翻译： 改进的溶液聚合方法，其中能量消耗降低，包括：i）将乙烯，溶剂，催化剂，α-烯烃和氢气注入至少一个反应器中以在单一液相溶液中制备聚乙烯; ii）使单一液相溶液失活; iii）将失活的溶液通入形成富含聚乙烯的溶剂和气态塔顶液流的底部流的气/液分离器; iv）将不超过40％的塔顶气流送入蒸馏; v）冷凝剩余的气态塔顶物流以形成循环流，同时产生低压蒸汽; vi）使再循环流通过用于低聚物去除的装置; vii）使循环流通过灯分离器; viii）使循环流通过净化步骤; ix）在再循环鼓中收集循环物流，使循环流通过泵并将高压循环物流注入所述反应器。
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