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    Multistage process for the polymerization of olefins
    32.
    发明授权
    Multistage process for the polymerization of olefins 有权
    用于烯烃聚合的多步法

    公开(公告)号：US09133291B2

    公开(公告)日：2015-09-15

    申请号：US14362842

    申请日：2012-12-04

    Applicant: Basell Polyolefine GmbH

    Inventor： Massimo Covezzi ,  Giuseppe Penzo ,  Gabriele Mei ,  Giulia Mei ,  Pietro Baita ,  Gerhardus Meier ,  Antonio De Lucia ,  Ulf Schueller ,  Gianpiero Ferraro

    IPC: C08F2/00 ,  B01J19/18 ,  C08F110/02 ,  C08F10/02 ,  C08F2/34 ,  C08F10/00

    CPC classification number: C08F110/02 ,  C08F2/001 ,  C08F2/34 ,  C08F10/00 ,  C08F10/02 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/24 ,  C08F2/00 ,  C08F2/01

    Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors,wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.

    Abstract translation: 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中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，其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管，其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床，该方法包括以下步骤：引入 流入沉降管中的流体，其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中，用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法，在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。

    Olefin polymerization process in a gas-phase reactor having three or more polymerization zones
    36.
    发明授权
    Olefin polymerization process in a gas-phase reactor having three or more polymerization zones 有权

    公开(公告)号：US10968293B2

    公开(公告)日：2021-04-06

    申请号：US16348612

    申请日：2017-11-09

    Applicant: Basell Polyolefine GmbH

    Inventor： Gerhardus Meier ,  Ulf Schueller

    IPC: C08F110/02 ,  C08F2/34

    Abstract: Process for preparing an olefin polymer including the step of polymerizing an olefin in the presence of a polymerization catalyst and hydrogen as molecular weight regulator in a gas-phase polymerization reactor to yield growing polymer particles, the reactor including three or more polymerization zones and at least two thereof are sub-zones of a polymerization unit wherein the growing polymer particles flow downward in a densified form and at least one polymerization zone has a ratio of hydrogen to the sum of olefins which is a factor of at least 1.5 lower than the ratio of hydrogen to the sum of olefins in the polymerization zone having the highest ratio of hydrogen to the sum of olefins and a factor of at least 1.5 higher than the ratio of hydrogen to the sum of olefins in the polymerization zone having the lowest ratio of hydrogen to the sum of olefins.

    POLYMERIZATION PROCESS IN THE PRESENCE OF AN ANTISTATIC COMPOSITION
    38.
    发明申请
    POLYMERIZATION PROCESS IN THE PRESENCE OF AN ANTISTATIC COMPOSITION 有权
    抗微生物组合物的聚合过程

    公开(公告)号：US20160130376A1

    公开(公告)日：2016-05-12

    申请号：US14897597

    申请日：2014-06-10

    Applicant: BASELL POLYOLEFINE GMBH

    Inventor： Shahram Mihan ,  Gerhardus Meier ,  Ulf Schueller ,  Michael Schiendorfer ,  Jens Wiesecke

    IPC: C08F110/02 ,  H01B1/12

    CPC classification number: C08F110/02 ,  C08F10/02 ,  C08F2410/02 ,  H01B1/12 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/24 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/13 ,  C08F2/005 ,  C08F2/34

    Abstract: A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.

    Abstract translation: 在聚合反应器中，在聚合催化剂和抗静电作用组合物的存在下，在20〜200℃的温度和0.1〜20MPa的压力下使烯烃聚合制备聚烯烃的方法，其中抗静电作用组合物 是包含油溶性表面活性剂和水的混合物，并且使用包含油溶性表面活性剂和水的抗静电作用组合物作为用于烯烃聚合的抗静电剂，其温度为20-200℃，压力为0.1 在聚合催化剂存在下为20MPa。

    MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    40.
    发明申请
    MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS 有权
    烯烃聚合的多种方法

    公开(公告)号：US20140309384A1

    公开(公告)日：2014-10-16

    申请号：US14362842

    申请日：2012-12-04

    Applicant: Basell Polyolefine GmbH

    Inventor： Massimo Covezzi ,  Giuseppe Penzo ,  Gabriele Mei ,  Giulia Mei ,  Pietro Baita ,  Gerhardus Meier ,  Antonio De Lucia ,  Ulf Schueller ,  Gianpiero Ferraro

    IPC: C08F110/02

    CPC classification number: C08F110/02 ,  C08F2/001 ,  C08F2/34 ,  C08F10/00 ,  C08F10/02 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/24 ,  C08F2/00 ,  C08F2/01

    Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors,wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe,the process comprising the steps ofintroducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point;withdrawing polyolefin particles from the lower end of the settling pipe; andtransferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor,process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.

    Abstract translation: 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中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，其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管，其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床，该方法包括以下步骤：引入 流入沉降管中的流体，其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中，用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法，在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。

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