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    • 53. 发明公开
    • HIGH PRESSURE, FREE RADICAL POLYMERIZATIONS TO PRODUCE ETHYLENE-BASED POLYMERS
    • 放射性化学品分子式聚合物UR UR ON ON ON ON EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN
    • EP3109262A1
    • 2016-12-28
    • EP16382298.4
    • 2016-06-24
    • Dow Global Technologies LLC
    • Berbee, Otto J.Dang, Nhi T. Y.Hosman, Cornelis J FFlores, Joaquin
    • C08F2/01C08F2/34B01J12/00F25B49/02
    • C08F2/34A46B11/06B01J12/00B05C17/00503B05C17/00569B05C17/00573C08F2/00C08F2/01C08F210/02Y02P20/582
    • The invention provides a high pressure polymerization process to form an ethylene-based polymer, the process comprising at least the following steps:
      polymerizing a reaction mixture comprising ethylene, using a reactor system comprising at least three ethylene-based feed streams and a reactor configuration that comprises at least four reaction zones, and
      wherein at least one of the following distributions a) through c), is met:
      (a) up to 100 wt% of the ethylene-based feed stream to the first reaction zone comes from a high pressure recycle, and/or up to 100 wt% of the last ethylene-based feed stream to a reaction zone comes from the output from a Primary compressor system; and/or
      (b) up to 100 wt% of the ethylene-based feed stream to first reaction zone comes from the output from a Primary compressor system, and/or up to 100 wt% of the last ethylene-based feed stream to a reaction zone comes from a high pressure recycle; and/or
      (c) the ethylene-based feed stream to the first reaction zone, and/or the last ethylene-based feed stream to a reaction zone, each comprises a controlled composition;
      and wherein each ethylene based feed stream to a reaction zone, independently, receives an output from two or more cylinders of the last compressor stage of a Hyper compressor system;
      and wherein the ethylene based feed stream to the first reaction zone is from 20 wt% to 60 wt% of the total ethylene based feed stream to the reactor configuration; and
      wherein the sum of the last two ethylene based feed streams to the reactor configuration is from 20 wt% to 80 wt% of the total ethylene based feed streams to the reactor configuration.
    • 本发明提供了形成乙烯基聚合物的高压聚合方法,该方法包括至少以下步骤:使用包含至少三个基于乙烯的进料流的反应器系统和包含乙烯的反应混合物聚合反应混合物,反应器构型 包含至少四个反应区,并且其中满足以下分布a)至c)中的至少一个:(a)至多100重量%的至第一反应区的基于乙烯的进料流来自高压 再循环和/或最多100重量%的最后一个基于乙烯的进料流到反应区来自主压缩机系统的输出; 和/或(b)至多100重量%的至第一反应区的基于乙烯的进料流来自主压缩机系统的输出,和/或最多100重量%的最后的乙烯基进料流至 反应区来自高压循环; 和/或(c)到第一反应区的乙烯进料流和/或最后的进入反应区的基于乙烯的进料流各自包含受控组合物; 并且其中独立于反应区的每个基于乙烯的进料流接收超级压缩机系统的最后压缩机级的两个或更多个气缸的输出; 并且其中到所述第一反应区的所述基于乙烯的进料流为所述反应器构型的总乙烯基进料流的20重量%至60重量% 并且其中到反应器构型的最后两个基于乙烯的进料流的总和为反应器构型的总乙烯基进料流的20重量%至80重量%。
    • 59. 发明公开
    • MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    • 维生素VERFAHREN ZUR POLYMERISIERUNG VON OLEFINEN
    • EP2997052A2
    • 2016-03-23
    • EP14725670.5
    • 2014-05-13
    • Basell Polyolefine GmbH
    • PENZO, GiuseppeMEI, GabrieleMEIER, GerhardusSCHUELLER, UlfCIARROCCHI, Antonio
    • C08F210/00C08F2/00C08F2/34
    • C08F110/02B01J8/0025B01J8/1863B01J8/1872B01J8/26B01J19/245B01J2208/00274B01J2208/00292B01J2208/00557B01J2208/00752B01J2208/00761B01J2208/00769B01J2208/00991B01J2219/24C08F10/00C08F2/001C08F2/34C08F2/01C08F2500/12C08F2500/07C08F2500/24C08F2500/18
    • A process for polymerizing olefins at temperatures of from 30°C to 140°C and pressures of from 1.0 MPa to 10 MPa in the presence of a polymerization catalyst in a multistage polymerization of olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of a) discharging polyolefin particles from the first gas-phase polymerization reactor into a separation chamber in which the polyolefin particles are separated from concomitantly discharged reaction gas, the separation chamber being at a lower pressure than the pressure in the first gas-phase polymerization reactor; b) transferring the polyolefin particles within the separation chamber into a lower part of the separation chamber which contains a bed of polyolefin particles which moves from top to bottom of this part of the separation chamber and into which a fluid is introduced in an amount that an upward stream of the fluid in the bed of polyolefin particles above the fluid introduction point is induced, c) withdrawing polyolefin particles from the lower end of said lower part and transferring them to one of at least two lock hoppers working intermittently in parallel; and d) simultaneously pressurizing another of the at least two lock hoppers working intermittently by means of a gas comprising reaction gas coming from the second gas-phase polymerization reactor, and apparatus for the multistage polymerization of olefins, comprising at least two serially connected gas-phase polymerization reactors and a device for transferring polyolefin particles from an up-stream gas-phase polymerization reactor to a downstream gas-phase polymerization reactor, the transferring device comprising - a gas/solid separation chamber placed downstream of the upstream gas-phase polymerization which gas/solid separation chamber is equipped at a lower part with an inlet for introducing a fluid, and - connected to the gas/solid separation chamber at least two lock hoppers, placed in a parallel arrangement, each connected to the downstream gas-phase polymerization reactor.
    • 在至少两个串联连接的气相聚合反应器中的烯烃多段聚合中,在聚合催化剂存在下,在30℃至140℃的温度和1.0MPa至10MPa的压力下使烯烃聚合的方法, 将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法,包括以下步骤:a)将聚烯烃颗粒从第一气相聚合反应器排出到其中分离聚烯烃颗粒的分离室 从同时排出的反应气体,分离室的压力低于第一气相聚合反应器中的压力; b)将分离室内的聚烯烃颗粒转移到分离室的下部,该分离室包含聚烯烃颗粒床,该聚烯烃颗粒床从分离室的该部分的顶部向底部移动,并且流体以 引起在流体引入点上方的聚烯烃颗粒床中的流体的向上流,c)从所述下部的下端抽出聚烯烃颗粒并将它们转移到平行间歇地工作的至少两个锁定料斗中的一个; 以及d)通过包含来自第二气相聚合反应器的反应气体的气体和用于烯烃的多段聚合的装置同时间歇地加压至少两个锁定料斗中的另一个,包括至少两个串联连接的气 - 将聚合物颗粒从上游气相聚合反应器转移到下游气相聚合反应器的装置,该转移装置包括 - 放置在上游气相聚合下游的气/固分离室,该气/ 固体分离室在下部配备有用于引入流体的入口,并且连接到气/固分离室至少两个并联布置的锁定料斗,每个连接漏斗连接到下游气相聚合反应器。