-
公开(公告)号：US06586539B2
公开(公告)日：2003-07-01
申请号：US09863430
申请日：2001-05-24
IPC分类号： C08F234
CPC分类号： C08F10/00 , C08F210/16 , C08F2400/02 , C08F2/002 , C08F2/40 , C08F2/34 , C08F2/00 , C08F4/651 , C08F4/025 , C08F4/6555 , C08F210/08
摘要： A process for controlling a continuous fluidised bed reactor (co-)polymerisation process which comprises (1) withdrawing from the reactor a hot recycle stream containing a principal monomer and at least one other unreacted reactant, (2) cooling part or all of the recycle stream withdrawn from the reactor, and (3) recycling part or all of the cooled recycle stream containing the principal monomer and the unreacted reactant(s) through the polymerisation zone in the reactor in the presence of a polymerisation catalyst under reactive conditions, wherein the controlling process consists in maintaining at least one of the reactant gradients (Gri) within a range of values outside which sheeting or unstable operations would otherwise occur.
摘要翻译： 一种用于控制连续流化床反应器（共）聚合方法的方法，其包括（1）从反应器中排出含有主要单体和至少一种其它未反应的反应物的热循环流，（2）冷却部分或全部循环 从反应器中取出的物流，和（3）在反应条件下，在聚合催化剂存在下，将反应器中含有主要单体和未反应的反应物的部分或全部冷却循环物流循环通过聚合区，其中 控制过程包括将反应物梯度（Gri）中的至少一个保持在外部范围内的值，否则将在其之外发生片材或不稳定的操作。
-
2.发明授权Apparatus for the gas-phase polymerization of olefins in a fluidized-bed reactor 失效用于流化床反应器中烯烃气相聚合的装置
公开(公告)号：US5266276A
公开(公告)日：1993-11-30
申请号：US28626
申请日：1993-03-09
申请人： Jean-Claude Chinh , Andre Dumain
发明人： Jean-Claude Chinh , Andre Dumain
CPC分类号： B01J8/1827 , C08F10/00 , Y10S526/901
摘要： The present invention relates to a process and apparatus for the gas-phase polymerization of olefins in a fluidized-bed reactor maintained at a temperature T1. A gaseous reaction mixture comprising the olefins to be polymerized passes through the reactor and is recycled to the reactor by means of a recycling line comprising successively a first heat transfer means, a compressor and a second heat transfer means. The present invention consists in introducing a readily volatile liquid hydrocarbon into the inlet of the first heat transfer means or into the recycling line, upstream and in the vicinity of the first heat transfer means. The first heat transfer means cools the gaseous reaction mixture to a temperature T2, below T1, while volatilizing the readily volatile hydrocarbon and without condensing a constituent of the gaseous reaction mixture. The second heat transfer means cools the gaseous reaction mixture to a temperature T3, below T2, for maintaining the fluidized-bed at the desired temperature T1.
摘要翻译： 本发明涉及一种维持在温度T1的流化床反应器中烯烃气相聚合的方法和装置。 包含待聚合的烯烃的气态反应混合物通过反应器，并通过连续包括第一传热装置，压缩机和第二传热装置的循环管线再循环到反应器中。 本发明包括将容易挥发的液体烃引入到第一传热装置的入口中或在第一传热装置的上游和附近引入回收管线。 第一传热装置将气态反应混合物冷却至低于T1的温度T2，同时挥发容易挥发的烃并且不冷凝气态反应混合物的组分。 第二传热装置将气态反应混合物冷却至低于T2的温度T3，以将流化床保持在所需温度T1。
-
公开(公告)号：US5733510A
公开(公告)日：1998-03-31
申请号：US602013
申请日：1996-02-15
IPC分类号： C08F10/02 , B01J8/18 , B01J8/24 , B01J19/26 , B05B7/04 , B05B7/08 , C08F2/34 , C08F10/00 , C08F10/06 , C08F210/16
CPC分类号： B01J8/1809 , B01J19/26 , B01J8/1827 , B01J8/1836 , B05B7/0433 , B05B7/08 , C08F10/00 , B01J2208/00061 , B01J2208/00088 , B01J2208/00256 , B01J2208/00274 , B01J2208/00362 , B01J2208/00539 , B01J2208/00548 , B01J2219/00119 , B01J2219/00128 , Y10S526/901
摘要： A fluidized bed polymerization reactor which is a generally cylindrical vessel having a longitudinal axis and a fluidization grid located in the vessel generally perpendicular to the longitudinal axis of the vessel and defining a fluidized bed region above the fluidization grid. The reactor has an inlet for continuously introducing a gaseous stream of polymerizable monomers into the vessel below the fluidization grid at a gas velocity sufficient to maintain particles in the fluidized bed region in a suspended and fluidized condition; an outlet for removing polymer product from the fluidized bed region and an outlet for continuously removing an outlet stream of gaseous unreacted polymerizable monomer from the fluidized bed region. A cooling device cools at least a part of the outlet stream to a temperature at which liquid condenses out of the outlet stream, and a separating device separates at least a part of the cooled outlet stream into condensed liquid and a cooled gaseous stream. The separated cooled gaseous stream is returned to the inlet and an injection device injects at least a part of the condensed liquid into the fluidized bed region at a point where the gaseous stream of polymerizable monomers passing through the vessel has substantially reached the operating temperature of the polymerization reactor. The injection device includes at least one gas induced atomizing nozzle for injecting an atomized stream of the condensed liquid into the fluidized bed region in a direction generally perpendicular to the longitudinal axis of the vessel.
摘要翻译： 一种流化床聚合反应器，其是通常为圆柱形的容器，其具有纵向轴线和位于容器中的流化格栅，其大致垂直于容器的纵向轴线并且在流化网格上方限定流化床区域。 反应器具有入口，用于以足以将流化床区域中的颗粒保持在悬浮和流化状态的气体速度将可聚合单体的气态流连续引入容器中; 用于从流化床区域除去聚合物产物的出口和用于从流化床区域连续地除去气态未反应的可聚合单体的出口流的出口。 冷却装置将出口流的至少一部分冷却至液体从出口流冷凝的温度，并且分离装置将冷却的出口物流的至少一部分分离成冷凝的液体和冷却的气态物流。 分离的冷却的气流返回到入口，注射装置将至少一部分冷凝的液体注入到流化床区域中，其中通过容器的可聚合单体的气态流基本达到 聚合反应器。 注射装置包括至少一个气体诱导的雾化喷嘴，用于将冷凝的液体的雾化流在大致垂直于容器的纵向轴线的方向上喷射到流化床区域中。
-
公开(公告)号：US5633333A
公开(公告)日：1997-05-27
申请号：US599709
申请日：1996-02-12
申请人： Jean-Claude Chinh
发明人： Jean-Claude Chinh
CPC分类号： B01J8/1809 , B01J3/02 , B01J8/003 , B01J8/0035 , C08F10/00 , B01J2208/00256 , B01J2208/00274 , B01J2208/00292 , B01J2208/00761 , Y10S526/901
摘要： The present invention relates to a process for continuous gas-phase polymerization of olefin(s) in a fluidized and/or mechanically stirred bed reactor, comprising a stage of drawing off the polymer out of the reactor, wherein a portion of the bed is transferred into a lock hopper and is then isolated from the reactor in the lock hopper for a period of 5 to 120 seconds so that a substantial amount of the olefin(s) in the said portion polymerizes, before the polymer thus isolated in the said portion is discharged out of the lock hopper. The process advantageously reduces the amount of the gas drawn off with the polymer to be recycled into the reactor and improves the degassing of the polymer by the heat of the polymerization reaction during the isolation period in the lock hopper (FIG. 1).
摘要翻译： 本发明涉及一种在流化床和/或机械搅拌床反应器中连续气相聚合烯烃的方法，包括将聚合物从反应器中排出的阶段，其中床的一部分被转移 然后从锁定料斗中的反应器中分离出5至120秒的时间，使得在所述部分中分离出的聚合物之前，所述部分中的大量烯烃聚合， 从锁料斗中排出。 该方法有利地减少了待再循环到反应器中的聚合物排出的气体的量，并且通过在封闭料斗（图1）中的隔离周期期间聚合反应的热改善了聚合物的脱气。
-
公开(公告)号：US5556238A
公开(公告)日：1996-09-17
申请号：US238929
申请日：1994-05-06
申请人： Jean-Claude Chinh
发明人： Jean-Claude Chinh
CPC分类号： C08F2/34 , B01J3/02 , B01J8/003 , C08F10/00 , B01J2208/00752
摘要： A process and an apparatus introduce fine particles of a solid into a reactor with the help of a feed enclosure connected to the reactor through an injection pipe. The process comprises (a) introducing the solid into the feed enclosure wherein most of the solid particles settle at rest and then (b) introducing a gas into the feed enclosure so that the solid particles are suspended by the gas to form a solid particle suspension entrained in a dilute-phase conveying system by the gas into the reactor through the injection pipe. The invention is particularly useful for introducing particles of a solid catalyst into a gas-phase polymerization reactor.
摘要翻译： 一种方法和设备借助于通过注射管连接到反应器的进料外壳将固体的细颗粒引入反应器。 该方法包括（a）将固体引入进料封闭物中，其中大部分固体颗粒静置沉淀，然后（b）将气体引入进料外壳中，使得固体颗粒被气体悬浮以形成固体颗粒悬浮液 夹带在稀相输送系统中，气体通过注入管进入反应器。 本发明特别可用于将固体催化剂的颗粒引入气相聚合反应器中。
-
公开(公告)号：US5928612A
公开(公告)日：1999-07-27
申请号：US971543
申请日：1997-11-17
申请人： Jean-Claude Chinh
发明人： Jean-Claude Chinh
CPC分类号： B01J8/1809 , B01J3/02 , B01J8/003 , C08F10/00 , B01J2208/00761 , Y10S526/901
摘要： The present invention relates to an apparatus for gas phase polymerisation of olefins(s), essentially comprising a fluidized bed reactor and at least one conduit for drawing off polymer provided with an isolation valve and connecting the vertical side wall of the reactor to a lock hopper, the said conduit leaving the vertical side wall of the reactor while being directed downwards so that each part of the said conduit forms with a horizontal plane an angle A ranging from 35.degree. to 90.degree.. It also relates to a process for continuous gas-phase polymerisation of olefin(s) in a fluidized-bed reactor, comprising drawing off the polymer from the vertical side wall of the reactor into a lock hopper via a draw-off conduit so that all flow of the polymer in the draw-off conduit is produced according to a downward direction forming with a horizontal plane an inclination with an angle A at least equal to the angle of repose .beta. of the polymer and not exceeding 90.degree.. The present invention improves the degree of filling of the lock hopper and reduces the amount of gas drawn off with the polymer. (FIG. 1).
摘要翻译： 本发明涉及一种用于烯烃气相聚合的装置，其基本上包括流化床反应器和用于抽出设置有隔离阀的聚合物的至少一个管道，并将反应器的垂直侧壁连接到闭锁料斗 ，所述管道在向下引导下离开反应器的垂直侧壁，使得所述管道的每个部分以水平面形成角度A为35°至90°。 它还涉及在流化床反应器中连续气相聚合烯烃的方法，其包括将聚合物从反应器的垂直侧壁通过排出导管抽出到锁料斗中，使得所有 聚合物在排出导管中的流动是根据向下的方向产生的，水平面的倾角与角度A至少等于聚合物的休止角β不超过90°。 本发明提高了封闭料斗的填充程度，并且减少了用聚合物排出的气体的量。 （图。1）。
-
公开(公告)号：US5804677A
公开(公告)日：1998-09-08
申请号：US678457
申请日：1996-07-09
IPC分类号： C08F10/02 , B01J8/18 , B01J8/24 , B01J19/26 , B05B7/04 , B05B7/08 , C08F2/34 , C08F10/00 , C08F10/06 , C08F210/16
CPC分类号： B01J8/1809 , B01J19/26 , B01J8/1827 , B01J8/1836 , B05B7/0433 , B05B7/08 , C08F10/00 , B01J2208/00061 , B01J2208/00088 , B01J2208/00256 , B01J2208/00274 , B01J2208/00362 , B01J2208/00539 , B01J2208/00548 , B01J2219/00119 , B01J2219/00128 , Y10S526/901
摘要： The invention relates to continuous gas fluidized bed polymerization of olefins, especially ethylene, propylene, or mixtures of these with other alpha olefins, wherein the monomer-containing recycle gas employed to fluidize the bed is cooled to condense out at least some liquid hydrocarbon. The condensed liquid, which can be a monomer or an inert liquid, is separated from the recycle gas and is fed directly to the bed to produce cooling by latent heat of evaporation. The liquid feeding to the bed can be through gas-induced atomizer nozzles (FIG. 2), or through liquid-only nozzles. The process provides substantially improved productivity of gas fluidized bed polymerization of olefins.
摘要翻译： 本发明涉及烯烃，特别是乙烯，丙烯或这些与其它α-烯烃的混合物的连续气体流化床聚合，其中用于流化床的含单体的再循环气体被冷却以冷凝至少一些液态烃。 可以将单体或惰性液体的冷凝液从再循环气体中分离出来，并直接送入床中，通过蒸发潜热产生冷却。 送入床的液体可以通过气体引发的雾化喷嘴（图2）或通过仅液体喷嘴。 该方法大大提高了烯烃气体流化床聚合的生产率。
-
公开(公告)号：US5668228A
公开(公告)日：1997-09-16
申请号：US602014
申请日：1996-02-15
IPC分类号： C08F10/02 , B01J8/18 , B01J8/24 , B01J19/26 , B05B7/04 , B05B7/08 , C08F2/34 , C08F10/00 , C08F10/06 , C08F210/16
CPC分类号： B01J8/1809 , B01J19/26 , B01J8/1827 , B01J8/1836 , B05B7/0433 , B05B7/08 , C08F10/00 , B01J2208/00061 , B01J2208/00088 , B01J2208/00256 , B01J2208/00274 , B01J2208/00362 , B01J2208/00539 , B01J2208/00548 , B01J2219/00119 , B01J2219/00128 , Y10S526/901
摘要： The invention relates to continuous gas fluidised bed polymerisation of olefins, especially ethylene, propylene, or mixtures of these with other alpha olefins, wherein the monomer-containing recycle gas employed to fluidise the bed is cooled to condense out at least some liquid hydrocarbon. The condensed liquid, which can be a monomer or an inert liquid, is separated from the recycle gas and is fed directly to the bed to produce cooling by latent heat of evaporation. The liquid feeding to the bed can be through gas-induced atomiser nozzles (FIG. 2), or through liquid-only nozzles. The process provides substantially improved productivity of gas fluidised bed polymerisation of olefins.
摘要翻译： 本发明涉及烯烃，特别是乙烯，丙烯或这些与其它α-烯烃的混合物的连续气体流化床聚合，其中用于流化床的含单体的再循环气体被冷却以冷凝至少一些液态烃。 可以将单体或惰性液体的冷凝液从再循环气体中分离出来，并直接送入床中，通过蒸发潜热产生冷却。 可以通过气体诱导的雾化喷嘴（图2）或通过仅液体喷嘴进入床的液体。 该方法大大提高了烯烃气体流化床聚合的生产率。
-
公开(公告)号：US6096839A
公开(公告)日：2000-08-01
申请号：US82532
申请日：1998-05-21
申请人： Jean-Claude Chinh , David Newton
发明人： Jean-Claude Chinh , David Newton
CPC分类号： B01J8/1827 , B01J19/26 , B05B7/0433 , C08F10/00 , B01J2219/00103 , B01J2219/00108 , B01J2219/00119 , B01J2219/00128 , B01J2219/00182
摘要： A continuous gas fluidized bed process for the polymerization of an olefin monomer, especially ethylene, propylene, or mixtures of these with other alpha-olefins, wherein monomer-containing recycle gas employed to fluidize the bed is cooled to condense out at least some liquid hydrocarbon. The condensed liquid, which can be a monomer or an inert liquid, is separated from the recycle gas and fed directly to the fluidized bed, through a gas-induced atomizer nozzle, to produce cooling by latent heat of evaporation. The nozzle is provided with a mechanical device within the liquid inlet of the atomizing chamber, that preatomizes the liquid so that the nozzle requires reduced amounts of gas compared with conventional gas-induced atomizer nozzles.
摘要翻译： 用于将烯烃单体，特别是乙烯，丙烯或它们与其它α-烯烃的混合物聚合的连续气体流化床方法，其中用于流化床的含单体的循环气体被冷却以冷凝至少一些液态烃 。 可以将单体或惰性液体的冷凝液从再循环气体中分离，并通过气体引发的雾化喷嘴直接送入流化床，通过蒸发潜热产生冷却。 喷嘴在雾化室的液体入口内设置有机械装置，其与常规的气体诱导雾化喷嘴相比，预先溶解液体，使得喷嘴需要减少量的气体。
-
公开(公告)号：US6001938A
公开(公告)日：1999-12-14
申请号：US987155
申请日：1997-12-08
CPC分类号： B01J8/1809 , B01J19/26 , B01J8/1827 , B01J8/1836 , B05B7/0433 , B05B7/08 , C08F10/00 , B01J2208/00061 , B01J2208/00088 , B01J2208/00256 , B01J2208/00274 , B01J2208/00362 , B01J2208/00539 , B01J2208/00548 , B01J2219/00128 , Y10S526/901 , Y10S526/904
摘要： The invention relates to continuous gas fluidised bed polymerisation of olefins, especially ethylene, propylene, or mixtures of these with other alpha olefins, wherein the monomer-containing recycle gas employed to fluidise the bed is cooled to condense out at least some liquid hydrocarbon. The condensed liquid, which can be a monomer or an inert liquid, is separated from the recycle gas and is fed directly to the bed to produce cooling by latent heat of evaporation. The liquid feeding to the bed can be through gas-induced atomiser nozzles (FIG. 2), or through liquid-only nozzles. The process provides substantially improved productivity of gas fluidised bed polymerisation of olefins.
摘要翻译： 本发明涉及烯烃，特别是乙烯，丙烯或这些与其它α-烯烃的混合物的连续气体流化床聚合，其中用于流化床的含单体的再循环气体被冷却以冷凝至少一些液态烃。 可以将单体或惰性液体的冷凝液从再循环气体中分离出来，并直接送入床中，通过蒸发潜热产生冷却。 可以通过气体诱导的雾化喷嘴（图2）或通过仅液体喷嘴进入床的液体。 该方法大大提高了烯烃气体流化床聚合的生产率。
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.023 秒)
