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14 条记录 (耗时 0.025 秒)

    Method for drying and degassing polyolefins
    1.
    发明授权
    Method for drying and degassing polyolefins 失效
    干燥和脱气聚烯烃的方法

    公开(公告)号：US06465608B1

    公开(公告)日：2002-10-15

    申请号：US09980566

    申请日：2001-11-15

    申请人： Michael Witt ,  Paulus De Lange ,  Thomas Perner ,  Andreas Deckers ,  Kaspar Evertz ,  Dieter Lilge

    发明人： Michael Witt ,  Paulus De Lange ,  Thomas Perner ,  Andreas Deckers ,  Kaspar Evertz ,  Dieter Lilge

    IPC分类号： C08F600

    CPC分类号： C08F6/005 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/13

    摘要： The invention relates to a method for drying and degassing polyolefins in which the polymerization product leaving a polymerization reactor is brought into contact with a degassing medium and simultaneously decompressed. The degassing medium employed according to the invention is the monomer to be polymerized, which, in particular, flows through a decompression tank in a circulation process and which is preferably also enriched with ethylene or other low-boiling olefins in an amount in the range from 0 to 100 mol %, based on the total amount of circulating gas. A polymerization in an amount of up to 10%, based on the total polymerization conversion, takes place in accordance with the invention inside the decompression tank.

    摘要翻译： 本发明涉及一种干燥脱气聚烯烃的方法，其中离开聚合反应器的聚合产物与脱气介质接触并同时减压。 根据本发明使用的脱气介质是待聚合的单体，其特别是在循环过程中流过减压槽，并且其优选还富含乙烯或其它低沸点烯烃，其量为 0〜100摩尔％，基于循环气体的总量。 根据本发明，在减压槽内进行基于总聚合转化率高达10％的聚合。

    Method for the discontinuous thermal treatment of catalyst material
    4.
    发明授权
    Method for the discontinuous thermal treatment of catalyst material 失效
    催化剂材料不连续热处理方法

    公开(公告)号：US06683022B1

    公开(公告)日：2004-01-27

    申请号：US09536355

    申请日：2000-03-27

    申请人： Paulus De Lange ,  Michael Kämmerer ,  Thomas Brauch ,  Kaspar Evertz ,  Thomas Letzelter ,  Peter Kölle ,  Hans-Jacob Feindt

    发明人： Paulus De Lange ,  Michael Kämmerer ,  Thomas Brauch ,  Kaspar Evertz ,  Thomas Letzelter ,  Peter Kölle ,  Hans-Jacob Feindt

    IPC分类号： B01J2326

    CPC分类号： C08F10/00 ,  C08F4/24

    摘要： Method for the discontinuous thermal treatment of catalyst material comprising the steps (a) introducing the catalyst material into a reactor, (b) heating the catalyst material, (c) thermally treating the catalyst material in the reactor at the reactor temperature, (d) discharging the catalyst material from the reactor and (e) cooling the catalyst material, wherein the reactor temperature is kept constant during the steps (a) to (e), step (b) is carried out during and/or after step (a), step (e) is carried out during and/or after step (d), and step (c) is carried out after step (b) and before step (e). The method is used primarily for the calcination or activation of catalysts or catalyst supports which are used in polyolefin production.

    摘要翻译： 催化剂材料的不连续热处理方法，包括步骤（a）将催化剂材料引入反应器，（b）加热催化剂材料，（c）在反应器温度下热处理反应器中的催化剂材料，（d） 从反应器中排出催化剂材料，（e）冷却催化剂材料，其中步骤（a）至（e）中步骤（b）中步骤（a）至（e）期间反应器温度保持恒定在步骤（a）期间和/ 步骤（e）在步骤（d）期间和/或之后进行，步骤（c）在步骤（b）之后和步骤（e）之前进行。该方法主要用于催化剂的煅烧或活化 或用于聚烯烃生产的催化剂载体。

    Method for producing an ethylene copolymer
    5.
    发明授权
    Method for producing an ethylene copolymer 失效
    乙烯共聚物的制造方法

    公开(公告)号：US06586540B1

    公开(公告)日：2003-07-01

    申请号：US09889607

    申请日：2001-07-19

    申请人： Paulus De Lange ,  Volker Billert ,  Bernd Brunner ,  Werner Ritter ,  Andreas Deckers

    发明人： Paulus De Lange ,  Volker Billert ,  Bernd Brunner ,  Werner Ritter ,  Andreas Deckers

    IPC分类号： C08F21016

    CPC分类号： C08F210/16 ,  C08F2/002 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F210/08

    摘要： The invention relates to a method for the production of copolymer based on ethylene by continuous copolymerization of ethylene and comonomer in a reactor in the presence of a catalyst. In this method, in a first step of the copolymerization, a mixture comprising ethylene and comonomer of such a composition that a copolymer-containing coating deposits in the reactor is metered into the reactor and/or generated in the reactor, and, in a second step, the concentration of the comonomer in the metered-in mixture and/or in the mixture generated in the reactor is reduced sufficiently and/or the concentration of the ethylene in the metered-in mixture and/or in the mixture generated in the reactor is increased sufficiently that the coating is removed from the reactor either partially or completely. The method has the advantage that the production of copolymer does not have to be interrupted during cleaning of the reactor.

    摘要翻译： 本发明涉及在反应器中在催化剂存在下通过乙烯和共聚单体的连续共聚制备基于乙烯的共聚物的方法。 在该方法中，在共聚的第一步骤中，将含有共聚物的涂层沉积在反应器中的组合物的乙烯和共聚单体的混合物计量加入反应器和/或在反应器中产生，并且在第二步中 步骤中，在计量混合物中和/或在反应器中产生的混合物中的共聚单体的浓度被充分降低和/或在计量混合物中和/或在反应器中产生的混合物中的乙烯浓度 充分增加，使得涂层部分或完全从反应器中除去。 该方法的优点在于，在反应器的清洗期间不必中断共聚物的制备。

    Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst
    6.
    发明授权
    Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst 有权

    公开(公告)号：US10253113B2

    公开(公告)日：2019-04-09

    申请号：US13990618

    申请日：2011-11-29

    申请人： Paulus De Lange ,  Manfred Hecker

    发明人： Paulus De Lange ,  Manfred Hecker

    IPC分类号： C08F4/24 ,  B01J8/18 ,  B01J8/22 ,  B01J23/26 ,  B01J38/32 ,  C08F10/00

    摘要： Method for activation of chromium containing catalyst precursor for polymerization and improved polymerization catalyst resulting The instant invention relates to an activation of a polymerization catalyst precursor by heat treatment comprising a support material and a catalyst precursor deposited thereon in a fluidized bed activator and to the use of the activated polymerization catalyst in the manufacture of polyolefins. The Method is performed in a cylindrical activator (1) arranged vertically comprising tubular activator walls, a fluidization gas inlet (2) near the bottom, a fluidization gas outlet (3) near the top and a heat exchange jacket (4) outside the tubular activator walls, wherein the heating jacket covers the complete outer surface of the walls of the activator. The catalyst prepared by that method is improved with respect to its minor content of impurities and causes less interruptions during gas-phase polymerization or slurry polymerization either in stirred vessel or loop.

    Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst
    9.
    发明授权
    Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst 有权
    活化用于聚合的含铬催化剂前体的方法和所得的聚合催化剂

    公开(公告)号：US09266976B2

    公开(公告)日：2016-02-23

    申请号：US13990490

    申请日：2011-11-29

    申请人： Manfred Hecker ,  Paulus De Lange ,  Rainer Karer

    发明人： Manfred Hecker ,  Paulus De Lange ,  Rainer Karer

    IPC分类号： C08F4/24 ,  B01J23/26 ,  B01J37/14 ,  B01J38/14 ,  B01J38/30 ,  B01J38/32 ,  C08F10/00

    CPC分类号： C08F4/24 ,  B01J23/26 ,  B01J37/14 ,  B01J38/14 ,  B01J38/30 ,  B01J38/32 ,  C08F10/00 ,  Y02P20/584 ,  C08F4/69

    摘要： The instant invention relates to an activation of a polymerization catalyst precursor by heat treatment comprising a support material and a catalyst precursor deposited thereon in a fluidized bed activator and to the use of the activated polymerization catalyst in the manufacture of polyolefins. The activation involves heat treatment in the presence of oxygen. After that activation the oxygen in the activator is replaced by inert gas via flushing until the fluidization gas emerging from the activator comprises oxygen in a maximum amount of up to 5 ppm. The catalyst prepared by that method is improved with respect to prevent reactor fouling during gas-phase polymerization or slurry polymerization either in stirred vessel or loop.

    摘要翻译： 本发明涉及通过热处理的聚合催化剂前体的活化，其包括在流化床活化剂中沉积在其上的载体材料和催化剂前体，以及活性聚合催化​​剂在制备聚烯烃中的用途。 活化包括在氧气存在下的热处理。 在该活化之后，通过冲洗将活化剂中的氧替代为惰性气体，直到从活化剂出来的流化气体包含最高达5ppm的氧气。 通过该方法制备的催化剂相对于在搅拌容器或循环中的气相聚合或淤浆聚合期间防止反应器结垢而改进。