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    • 1. 发明申请
    • PROCESS FOR PURGING PROPANE IN A POLYPROPYLENE MANUFACTURING PROCESS
    • 聚丙烯制造工艺中丙烯的制备方法
    • WO2013110718A1
    • 2013-08-01
    • PCT/EP2013/051362
    • 2013-01-24
    • TOTAL RESEARCH & TECHNOLOGY FELUY
    • JANSSENS, ElsAVAULLEE, LaurentRICHET, Marc
    • C08F6/00B01D53/22B01J19/24C08F210/06
    • C08F110/06C08F6/001C08L23/10
    • The present invention relates to the purging of propane in a polypropylene manufacturing process comprising, a) polymerizing propylene in a polymerization zone, b) withdrawing from said polymerization zone an effluent comprising polypropylene, propylene, propane and optionally a solvent, c) sending said effluent to a separation zone thereby producing polypropylene, optionally the solvent and a stream comprising propylene and propane, d) optionally recycling the solvent to the polymerization zone, e) sending said propylene and propane stream to a splitter thereby producing an overhead consisting essentially of propylene recycled to the polymerization zone and a rich propane bottom stream comprising a minor part of propylene, f) sending the bottom stream to a membrane separation zone thereby producing a permeate having an enhanced propylene content and a reduced propane content and a purge having an enhanced propane content and a reduced propylene content, g) recycling the permeate to the polymerization zone. In an embodiment the bottom stream produced in the splitter of stepe) is washed in a scrubber to remove contaminants and the overhead of said scrubber is sent to the membrane separation zone. The present invention is also the debottlenecking of a polypropylene manufacturing facility comprising, a polymerization zone, a separation zone to recover the polypropylene, optionally the solvent and a stream comprising propylene and propane and a splitter to separate propane and propylene, wherein, a membrane separation zone is provided, said membrane separation zone is fed with the splitter bottom thereby producing a purge and a permeate recycled to the polymerization zone. In an embodiment a scrubber is inserted between the splitter bottoms and the membrane separation zone stream to wash the splitter bottom stream to remove contaminants and the overhead of said scrubber is sent to the membrane separation zone.
    • 本发明涉及在聚丙烯制造方法中丙烷的清洗,其包括:a)在聚合区中聚合丙烯,b)从所述聚合区中排出包含聚丙烯,丙烯,丙烷和任选的溶剂的流出物,c)将所述流出物 分离区,从而产生聚丙烯,任选地溶剂和包含丙烯和丙烷的料流,d)任选地将溶剂再循环到聚合区,e)将所述丙烯和丙烷料流送到分离器,从而产生基本上由丙烯再循环 聚合区和富丙烷底部料流,其包含少部分丙烯,f)将底部料流送至膜分离区,由此产生具有增强的丙烯含量和降低的丙烷含量的渗透物,以及具有增强的丙烷含量的吹扫 和降低的丙烯含量,g)将渗透物再循环到第 聚合区。 在一个实施方案中,在步骤中的分离器中产生的底部流在洗涤器中洗涤以除去污染物,并且将所述洗涤器的塔顶馏出物送至膜分离区。 本发明还涉及一种聚丙烯制造设备的消除瓶颈,其包括聚合区,回收聚丙烯的分离区,任选的溶剂和包含丙烯和丙烷的流以及用于分离丙烷和丙烯的分离器,其中,膜分离 区域,所述膜分离区被供给分离器底部,从而产生再循环到聚合区的吹扫和渗透物。 在一个实施例中,将洗涤器插入在分离器底部和膜分离区流之间以洗涤分离器底部流以除去污染物,并将所述洗涤器的塔顶物质送入膜分离区。
    • 2. 发明申请
    • OLEFIN POLYMERIZATION PROCESS WITH CONTINUOUS TRANSFER
    • 具有连续转移的OLEFIN聚合方法
    • WO2014114646A1
    • 2014-07-31
    • PCT/EP2014/051144
    • 2014-01-21
    • TOTAL RESEARCH & TECHNOLOGY FELUY
    • FOUARGE, LouisHORRE, AnneliesNAUWELAERTS, GeertRICHET, MarcWILDERIANE, Pascal
    • C08F10/00C08F2/14C08F2/01
    • C08F2/01C08F2/14C08F210/16C08F210/14C08F2/001C08F10/00C08F4/65927
    • The present invention relates to a process for the preparation of a polyolefin in at least two slurry loop reactors comprising a first loop reactor connected in series with a second loop reactor, comprising the steps of: - introducing one or more olefin reactants, diluents and polymerization catalyst into said first loop reactor, and while circulating said olefin reactants, diluents and polymerization catalyst in said first loop reactor; - polymerizing said one or more olefin reactants to produce a polyolefin slurry comprising liquid diluent and solid olefin polymer particles; - withdrawing polyolefin slurry comprising solid olefin polymer particles and diluent from said first reactor and introducing the withdrawn particles into the second loop reactor, by means of one or more settling legs provided on said first reactor, wherein each settling leg has an inlet connected to the first reactor and an outlet connected to the second reactor by means of a transfer line, - wherein at least one settling leg is continuously open allowing continuous transfer of solid olefin polymer particles from said first loop reactor to said second loop reactor, and wherein the process further comprises the step of controlling the continuous transfer of solid olefin polymer particles from said first loop reactor to said second loop reactor by at least one continuously open settling leg.
    • 本发明涉及一种在至少两个淤浆环流反应器中制备聚烯烃的方法,包括与第二环管反应器串联连接的第一回路反应器,包括以下步骤: - 引入一种或多种烯烃反应物,稀释剂和聚合 在所述第一回路反应器中循环所述烯烃反应物,稀释剂和聚合催化剂; - 聚合所述一种或多种烯烃反应物以产生包含液体稀释剂和固体烯烃聚合物颗粒的聚烯烃淤浆; - 从所述第一反应器中抽出包含固体烯烃聚合物颗粒和稀释剂的聚烯烃浆料,并通过设置在所述第一反应器上的一个或多个沉降腿将引出的颗粒引入第二回路反应器,其中每个沉降腿具有连接到 第一反应器和通过输送管线连接到第二反应器的出口, - 其中至少一个沉降腿连续打开,允许固体烯烃聚合物颗粒从所述第一回路反应器连续转移到所述第二回路反应器,并且其中所述方法 进一步包括通过至少一个连续打开的沉降腿控制固体烯烃聚合物颗粒从所述第一回路反应器到所述第二回路反应器的连续转移的步骤。
    • 4. 发明申请
    • OLEFIN POLYMERIZATION PROCESS WITH CONTINUOUS DISCHARGING
    • 具有连续排放的烯烃聚合方法
    • WO2014114645A1
    • 2014-07-31
    • PCT/EP2014/051143
    • 2014-01-21
    • TOTAL RESEARCH & TECHNOLOGY FELUY
    • FOUARGE, LouisHORRE, AnneliesNAUWELAERTS, GeertTANGHE, RudiJANSSENS, JohanBEUCKELAERS, StevenRICHET, MarcWILDERIANE, Pascal
    • C08F10/00C08F2/14C08F2/01
    • C08F210/16C08F2/01C08F2/14C08F210/14
    • The present invention relates to a process for the preparation of a polyolefin in at least one slurry loop reactor provided with one or more settling legs, comprising the steps of: - introducing into said loop reactor one or more olefin reactants, diluents, polymerization catalyst and optional ingredients and while circulating said olefin reactants, diluents and polymerization catalyst in said loop reactor; - polymerizing said one or more olefin reactants to produce a polymer slurry comprising liquid diluent and solid olefin polyolefin particles; - continuously withdrawing polyolefin slurry comprising polyolefin particles and diluent from said reactor, via said one or more settling legs and transferring said withdrawn solid olefin polymer particles from said loop reactor to a recovery section; wherein each settling leg has an inlet connected to the reactor and an outlet connected to the recovery section, and wherein at least one settling leg is continuously open allowing continuous withdrawal of said polyolefin slurry from said loop reactor, and wherein each outlet of said one or more settling legs is connected to the recovery section by means of at least one conduit provided with a pressure control device, and wherein the pressure in said loop reactor is controlled by operating said pressure control device.
    • 本发明涉及一种在至少一个具有一个或多个沉降腿的淤浆环流反应器中制备聚烯烃的方法,其包括以下步骤: - 向所述环管反应器中引入一种或多种烯烃反应物,稀释剂,聚合催化剂和 在所述环管反应器中循环所述烯烃反应物,稀释剂和聚合催化剂; - 聚合所述一种或多种烯烃反应物以产生包含液体稀释剂和固体烯烃聚烯烃颗粒的聚合物浆料; - 经由所述一个或多个沉降腿连续地从所述反应器中抽出包含聚烯烃颗粒和稀释剂的聚烯烃浆料,并将所述取出的固体烯烃聚合物颗粒从所述环管反应器转移到回收段中; 其中每个沉降腿具有连接到反应器的入口和连接到回收部分的出口,并且其中至少一个沉降腿是连续打开的,允许所述聚烯烃浆料从所述环管反应器连续抽出,并且其中所述一个或 更多的沉降腿通过设置有压力控制装置的至少一个管道连接到回收部分,并且其中通过操作所述压力控制装置来控制所述回路反应器中的压力。