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    Process for the polymerization of olefins
    21.
    发明授权
    Process for the polymerization of olefins 有权

    公开(公告)号：US10696756B2

    公开(公告)日：2020-06-30

    申请号：US15750948

    申请日：2016-07-27

    Applicant: SABIC Global Technologies B.V.

    Inventor： Yahya Banat ,  Ahmad Abdullah Alshaiban ,  Osamah Maidan

    IPC: C08F2/34 ,  C08F2/01 ,  C08F10/06 ,  C08F10/02 ,  B01J8/24 ,  B01J8/18 ,  B01J19/00

    Abstract: The present invention relates to a process for the continuous preparation of a polyolefin in a reactor from one or more α-olefin monomers of which at least one is ethylene or propylene, wherein the reactor comprises a fluidized bed, an expanded section located at or near the top of the reactor, a distribution plate located at the lower part of the reactor and an inlet for a recycle stream located under the distribution plate, wherein the process comprises—feeding a polymerization catalyst to the fluidized bed in the area above the distribution plate—feeding the one or more α-olefin monomers to the reactor—withdrawing the polyolefin from the reactor—circulating fluids from the top of the reactor to the bottom of the reactor, wherein the circulating fluids are cooled using a heat exchanger, resulting in a cooled recycle stream comprising liquid, and wherein the cooled recycle stream is introduced into the reactor using the inlet for the recycle stream wherein a stream comprising a thermal run away reducing agent (TRRA-containing stream) is introduced into the expanded section during at least part of the polymerization process, wherein said TRRA-containing stream is brought into contact with at least part of the interior surface of the expanded section.

    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR
    25.
    发明申请
    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR 有权
    烯烃单体在反应器中连续聚合的方法

    公开(公告)号：US20160297899A1

    公开(公告)日：2016-10-13

    申请号：US15100491

    申请日：2014-11-24

    Applicant: Yahuy BANAT ,  Jose Fernando CEVALLOS-CANDAU ,  SAUDI BASIC INDUSTRIES CORPORATION ,  SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Yahya Banat ,  Jose Fernando Cevallos-Candau

    IPC: C08F10/06 ,  C08F10/02

    CPC classification number: C08F10/06 ,  C08F2/34 ,  C08F10/02 ,  C08F10/00 ,  C08F2/00 ,  C08F2/01

    Abstract: The invention relates to a process for the continuous polymerization α-olefin monomers comprising: feeding the α-olefins to a vertically extended reactor for the continuous fluidized bed polymerization of α-olefin monomers, wherein the reactor comprises a distribution plate and an integral gas/liquid separator, withdrawing the polyolefin from the reactor, withdrawing fluids from the reactor, cooling the fluids to below their dew point, resulting in a bottom recycle stream, (5) introducing the bottom recycle stream, separating at least part of the liquid from the bottom recycle stream, feeding a liquid phase to an external pipe, adding a solid polymerization catalyst to the liquid phase in the external pipe and (9) feeding a slurry stream comprising the prepolymer and/or polymer into the reactor, wherein the prepolymer and/or polymer are present in the slurry stream in an amount of 0.01 to 99 wt % based on the total slurry stream upon introduction into the reactor.

    Abstract translation: 本发明涉及一种连续聚合α-烯烃单体的方法，包括：将α-烯烃进料到用于α-烯烃单体的连续流化床聚合的垂直延伸的反应器中，其中反应器包括分配板和整体气体/ 液体分离器，从反应器中取出聚烯烃，从反应器中取出流体，将流体冷却至低于其露点，导致底部循环流，（5）引入底部循环流，将至少部分液体从 将液相进料到外管，向外管中的液相中加入固体聚合催化剂，和（9）将包含预聚物和/或聚合物的浆料流进料到反应器中，其中预聚物和/ 或聚合物在引入反应器中时基于总浆液流量以0.01至99重量％的量存在于浆料流中。

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