PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS

    公开(公告)号:EP3394111A1

    公开(公告)日:2018-10-31

    申请号:EP16805059.9

    申请日:2016-11-29

    CPC classification number: C08F2/34 C08F2/001 C08F2/01 C08F4/6592 C08F2410/05

    Abstract: The invention relates to a process for transitioning from a first continuous polymerization in a gas phase reactor conducted in the presence of a metallocene catalyst to a second polymerization conducted in the presence of a Ziegler-Natta catalyst in the gas phase reactor wherein the metallocene catalyst and the Ziegler-Natta catalysts are incompatible, the process comprising: (a) discontinuing the introduction of the metallocene catalyst into the gas phase reactor; (b) introducing an effective amount of cyclohexylamine into the reactor to at least partially deactivate the metallocene catalyst; (c) introducing an organometallic compound into the reactor and reacting the organometallic compound with cyclohexylamine; (d) degas the gas composition of the reactor and build up a new composition inside the reactor for the second polymerization with the Ziegler-Natta catalyst (e) introducing the Ziegler-Natta catalyst into the reactor.

    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR
    3.
    发明公开
    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR 审中-公开
    在反应器中连续聚合烯烃单体的方法

    公开(公告)号:EP3135694A1

    公开(公告)日:2017-03-01

    申请号:EP15182734.2

    申请日:2015-08-27

    Inventor: BANAT, Yahya

    Abstract: The invention relates to a process and system for the continuous polymerization of one or more α-olefin monomers comprising the steps of:
    a) introducing catalyst and/or polymer from at least one loop reactor to at least one second reactor
    b) withdrawing fluids from the at least one second reactor
    c) cooling fluids comprising the withdrawn fluids with a cooling unit
    d) introducing the cooled fluids to a separator to separate at least part of the liquid from these fluids to form a liquid phase and a gas/liquid phase
    e) introducing the gas/liquid phase below to the reactor below a distribution plate
    f) introducing the liquid phase to a settling tank to separate liquid from fines that settle down in the settling tank
    g) introducing liquid from the settling tank upstream of the cooling unit,
    h) introducing the slurry comprising solid polymer particles from the settling tank to the at least one loop reactor.

    Abstract translation: 本发明涉及用于一种或多种α-烯烃单体的连续聚合的方法和系统,其包括以下步骤:a)将催化剂和/或聚合物从至少一个回路反应器引入至少一个第二反应器; b)从 所述至少一个第二反应器c)用冷却单元冷却包含抽出流体的流体d)将冷却流体引入分离器以将至少部分液体与这些流体分离以形成液相和气/液相e )在分配板下方将气/液相引入反应器中f)将液相引入沉降罐以将液体与沉降罐中沉降的细粒分离g)将液体从沉降罐的冷却单元上游引入 h)将包含固体聚合物颗粒的淤浆从沉降罐引入到至少一个环管反应器中。

    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR
    4.
    发明公开
    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR 审中-公开
    EEREM REAKTOR VERFAHREN ZUR KONTINUIERLICHEN POLYMERISATION VON OLEFINMONOMEREN

    公开(公告)号:EP3074432A1

    公开(公告)日:2016-10-05

    申请号:EP14802074.6

    申请日:2014-11-24

    Abstract: The invention relates to a system for the continuous polymerization of α-olefin monomers comprising a reactor, a compressor, a cooling unit and an external pipe, wherein the reactor comprises a first outlet for a top recycle stream, wherein the system comprises apparatus, wherein the reactor comprises a first inlet for receiving a bottom recycle stream, wherein the reactor comprises an integral separator, wherein the first inlet of the integral separator is connected to a first outlet, wherein the first outlet for the liquid phase is connected to the second outlet of the reactor for the liquid phase, wherein the external pipe comprises a second inlet for receiving a solid polymerization catalyst, wherein the first outlet of the external pipe is connected to a second inlet of the reactor, wherein the reactor comprises a third outlet, wherein the system comprises a first inlet for receiving a feed.

    Abstract translation: 本发明涉及包含反应器,压缩机,冷却单元和外部管的α-烯烃单体的连续聚合的系统,其中反应器包括用于顶部再循环流的第一出口,其中该系统包括装置,其中 所述反应器包括用于接收底部循环流的第一入口,其中所述反应器包括整体分离器,其中所述整体分离器的第一入口连接到第一出口,其中用于液相的第一出口连接到第二出口 用于液相的反应器,其中所述外管包括用于接收固体聚合催化剂的第二入口,其中所述外管的所述第一出口连接到所述反应器的第二入口,其中所述反应器包括第三出口,其中 该系统包括用于接收进料的第一入口。

    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR

    公开(公告)号:EP3341420A1

    公开(公告)日:2018-07-04

    申请号:EP16756667.8

    申请日:2016-08-18

    Inventor: BANAT, Yahya

    Abstract: The invention relates to a process and system for the continuous polymerization of one or more ±-olefin monomers comprising the steps of: a) introducing catalyst and/or polymer from at least one loop reactor to at least one second reactor b) withdrawing fluids from the at least one second reactor c) cooling fluids comprising the withdrawn fluids with a cooling unit d) introducing the cooled fluids to a separator to separate at least part of the liquid from these fluids to form a liquid phase and a gas/liquid phase e) introducing the gas/liquid phase below to the reactor below a distribution plate f) introducing the liquid phase to a settling tank to separate liquid from fines that settle down in the settling tank g) introducing liquid from the settling tank upstream of the cooling unit, h) introducing the slurry comprising solid polymer particles from the settling tank to the at least one loop reactor.

    PROCESS FOR THE POLYMERIZATION OF OLEFINS
    8.
    发明公开

    公开(公告)号:EP3331923A1

    公开(公告)日:2018-06-13

    申请号:EP16744740.8

    申请日:2016-07-27

    Abstract: The present invention relates to a process for the continuous preparation of polypropylene in a reactor from propylene and optionally ethylene and/or at least one other oolefin monomer, 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 propylene and the optional at least one other oolefin monomer to the reactor—withdrawing the polypropylene from the reactor—circulating fluids from the top of the reactor to the bottom of the reactor, wherein the circulating fluids are compressed using a compressor and 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 an alkane chosen from the group of iso-butane, n-butane, cyclopropane and mixtures thereof is added to the reactor and wherein the molar composition of the components in the recycle stream is chosen such that the dew temperature of the recycle stream at the reactor pressure is at least 0.10° C. below the temperature of the reactor

    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR
    9.
    发明公开
    PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR 有权
    在反应器中连续聚合烯烃单体的方法

    公开(公告)号:EP3074433A1

    公开(公告)日:2016-10-05

    申请号:EP14802439.1

    申请日:2014-11-24

    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 of one or more a-olefin monomers of which at least one is ethylene or propylene comprising the steps of: (1) feeding the one or more a-olefins to a vertically extended reactor suitable for the continuous fluidized bed polymerization of one or more a-olefin monomers of which at least one is ethylene or propylene, which reactor is operable in condensed mode, wherein the reactor comprises a distribution plate and an integral gas/liquid separator located below the distribution plate, (2) withdrawing the polyolefin from the reactor (3) withdrawing fluids from the top of the reactor, (4) cooling the fluids to below their dew point, resulting in a bottom recycle stream, (5) introducing the bottom recycle stream under the distribution plate, (6) separating at least part of the liquid from the bottom recycle stream using the integral separator to form a liquid phase and a gas/liquid phase, (7) feeding the liquid phase to an external pipe, (8) adding a solid polymerization catalyst to the liquid phase in the external pipe resulting in the formation of a slurry stream comprising prepolymer and/or polymer and (9) feeding the slurry stream comprising the prepolymer and/or polymer into the reactor above the distribution plate, wherein the prepolymer and/or polymer are present in the slurry stream in an amount of from 0.01 to 99 wt % based on the total slurry stream upon introduction of the slurry stream into the reactor.

    Abstract translation: 本发明涉及一种用于连续聚合一种或多种α-烯烃单体的方法,其中至少一种是乙烯或丙烯,该方法包括以下步骤:(1)将一种或多种α-烯烃加入垂直延伸的反应器中,该反应器适用于 一种或多种其中至少一种是乙烯或丙烯的α-烯烃单体的连续流化床聚合,该反应器可以冷凝模式操作,其中反应器包括分配板和位于分配板下方的整体式气/液分离器 ,(2)从反应器(3)中取出聚烯烃,从反应器顶部排出流体,(4)将流体冷却至其露点以下,产生底部循环流,(5)将底部循环流引入 (6)使用整体式分离器将至少部分液体与底部再循环物流分离以形成液相和气/液相,(7)将液相进料到 (8)将固体聚合催化剂加入到外管中的液相中,导致形成包含预聚物和/或聚合物的浆料流,和(9)将包含预聚物和/或聚合物的浆料流进料到 其中预聚物和/或聚合物在淤浆流中的存在量为基于淤浆流引入反应器中的总淤浆流的0.01-99重量%

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