利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

82 条记录 (耗时 0.034 秒)

    Method for replacing incompatible ethylene polymerization catalysts
    15.
    发明授权
    Method for replacing incompatible ethylene polymerization catalysts 有权
    替代不相容的乙烯聚合催化剂的方法

    公开(公告)号：US09187585B2

    公开(公告)日：2015-11-17

    申请号：US14644768

    申请日：2015-03-11

    申请人： TOTAL RESEARCH & TECHNOLOGY FELUY

    发明人： Daan Dewachter ,  Martine Slawinski

    IPC分类号： C08F2/14 ,  C08F2/42 ,  C08F10/02 ,  C08F110/02

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F2410/05 ,  C08F2/42 ,  C08F2/01 ,  C08F2/00

    摘要： The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, thereby providing a first catalyst slurry, transferring said first catalyst slurry from said mixing vessel to an ethylene polymerization loop reactor at a concentration suitable for polymerizing ethylene, increasing the ratio of said diluent to said first ethylene polymerization catalyst in said first catalyst slurry, stopping the supply of said first catalyst slurry to said mixing vessel, stopping the supply of said first catalyst slurry to said ethylene polymerization loop reactor, stopping the supply of ethylene to said ethylene polymerization loop reactor, removing said first catalyst slurry from said ethylene polymerization loop reactor, emptying said mixing vessel, optionally rinsing said mixing vessel with fresh diluent, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, thereby providing a second catalyst slurry, decreasing the ratio of said second diluent to said second ethylene polymerization catalyst in said mixing vessel to obtain a concentration of said second ethylene polymerization catalyst in said second diluent suitable for polymerizing ethylene, transferring said second ethylene polymerization catalyst slurry from said mixing vessel to said ethylene polymerization reactor, restoring the supply of ethylene to said ethylene polymerization loop reactor, restarting ethylene polymerization in said ethylene polymerization loop reactor.

    摘要翻译： 本发明涉及一种用于优化至少两种乙烯聚合催化剂对乙烯聚合反应器的顺序使用的方法，包括：向混合容器中转移第一乙烯聚合催化剂和第一稀释剂，由此提供第一催化剂浆料， 将所述第一催化剂浆料从所述混合容器转移到乙烯聚合反应器中，其浓度适于聚合乙烯，增加所述稀释剂与所述第一催化剂浆液中所述第一乙烯聚合催化剂的比例，停止将所述第一催化剂浆料供应至 所述混合容器停止向所述乙烯聚合反应器供应所述第一催化剂浆料，停止向所述乙烯聚合反应器供应乙烯，从所述乙烯聚合反应器中除去所述第一催化剂浆液，排空所述混合容器，任选地冲洗 所说混合容器与f 将所述第二乙烯聚合催化剂和第二稀释剂转移到所述混合容器中，从而提供第二催化剂浆料，从而减少所述混合容器中所述第二稀释剂与所述第二乙烯聚合催化剂的比例，以获得所述第二乙烯 所述第二稀释剂中的聚合催化剂适于聚合乙烯，将所述第二乙烯聚合催化剂浆料从所述混合容器转移到所述乙烯聚合反应器中，恢复向所述乙烯聚合反应器供应乙烯，在所述乙烯聚合反应器中重新开始乙烯聚合。

    Method for Replacing Incompatible Ethylene Polymerization Catalysts
    16.
    发明申请
    Method for Replacing Incompatible Ethylene Polymerization Catalysts 审中-公开
    替代不相容的乙烯聚合催化剂的方法

    公开(公告)号：US20150183896A1

    公开(公告)日：2015-07-02

    申请号：US14644768

    申请日：2015-03-11

    申请人： TOTAL RESEARCH & TECHNOLOGY FELUY

    发明人： Daan Dewachter ,  Martine Slawinski

    IPC分类号： C08F10/02

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F2410/05 ,  C08F2/42 ,  C08F2/01 ,  C08F2/00

    摘要： The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, thereby providing a first catalyst slurry, transferring said first catalyst slurry from said mixing vessel to an ethylene polymerization loop reactor at a concentration suitable for polymerizing ethylene, increasing the ratio of said diluent to said first ethylene polymerization catalyst in said first catalyst slurry, stopping the supply of said first catalyst slurry to said mixing vessel, stopping the supply of said first catalyst slurry to said ethylene polymerization loop reactor, stopping the supply of ethylene to said ethylene polymerization loop reactor, removing said first catalyst slurry from said ethylene polymerization loop reactor, emptying said mixing vessel, optionally rinsing said mixing vessel with fresh diluent, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, thereby providing a second catalyst slurry, decreasing the ratio of said second diluent to said second ethylene polymerization catalyst in said mixing vessel to obtain a concentration of said second ethylene polymerization catalyst in said second diluent suitable for polymerizing ethylene, transferring said second ethylene polymerization catalyst slurry from said mixing vessel to said ethylene polymerization reactor, restoring the supply of ethylene to said ethylene polymerization loop reactor, restarting ethylene polymerization in said ethylene polymerization loop reactor.

    摘要翻译： 本发明涉及一种用于优化至少两种乙烯聚合催化剂对乙烯聚合反应器的顺序使用的方法，包括：向混合容器中转移第一乙烯聚合催化剂和第一稀释剂，由此提供第一催化剂浆料， 将所述第一催化剂浆料从所述混合容器转移到乙烯聚合反应器中，其浓度适于聚合乙烯，增加所述稀释剂与所述第一催化剂浆液中所述第一乙烯聚合催化剂的比例，停止将所述第一催化剂浆料供应至 所述混合容器停止向所述乙烯聚合反应器供应所述第一催化剂浆料，停止向所述乙烯聚合反应器供应乙烯，从所述乙烯聚合反应器中除去所述第一催化剂浆液，排空所述混合容器，任选地冲洗 所说混合容器与f 将所述第二乙烯聚合催化剂和第二稀释剂转移到所述混合容器中，从而提供第二催化剂浆料，从而减少所述混合容器中所述第二稀释剂与所述第二乙烯聚合催化剂的比例，以获得所述第二乙烯 所述第二稀释剂中的聚合催化剂适于聚合乙烯，将所述第二乙烯聚合催化剂浆料从所述混合容器转移到所述乙烯聚合反应器中，恢复向所述乙烯聚合反应器供应乙烯，在所述乙烯聚合反应器中重新开始乙烯聚合。

    Method for transitioning between incompatible olefin polymerization catalyst systems
    20.
    发明授权
    Method for transitioning between incompatible olefin polymerization catalyst systems 有权
    在不相容烯烃聚合催化剂体系之间转化的方法

    公开(公告)号：US08293855B2

    公开(公告)日：2012-10-23

    申请号：US12737512

    申请日：2009-07-21

    申请人： Gerhardus Meier ,  Shahram Mihan ,  Massimo Covezzi

    发明人： Gerhardus Meier ,  Shahram Mihan ,  Massimo Covezzi

    IPC分类号： C08F2/38 ,  C08F210/00 ,  C08F210/02 ,  C08F210/08 ,  C08F210/14 ,  C08F4/16

    CPC分类号： C08F10/00 ,  C08F210/16 ,  C08F2410/05 ,  C08F2/34 ,  C08F2/42 ,  C08F210/08 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/05

    摘要： A method for transitioning from a first to a second catalyst system for the olefin polymerization reaction in one reactor, wherein the first catalyst system is incompatible with the second catalyst system, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the first catalyst system; and b) performing a second olefin polymerization reaction in the presence of the second catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the Mw of the first polyolefin fraction is less than the Mw of the second polyolefin fraction and the initial activity of catalyst component (A) exceeds the initial activity of catalyst component (B). Thanks to this method, there is no need to empty the reactor after the first olefin polymerization reaction, and the transitioning time needed to attain the desired quality of the polyolefin obtained in the second olefin polymerization reaction is sufficiently short to permit a quick and reliable change of production.

    摘要翻译： 描述了在一个反应​​器（其中第一催化剂体系与第二催化剂体系不相容的情况下）从用于烯烃聚合反应的第一催化剂体系转化为第二催化剂体系的方法。 该方法包括以下步骤：a）停止在第一催化剂体系存在下进行的第一烯烃聚合反应; 和b）在包含分别产生第一和第二聚烯烃部分的催化剂组分（A）和（B））的第二催化剂体系的存在下进行第二烯烃聚合反应，其中第一聚烯烃部分的Mw小于 第二聚烯烃级分的Mw和催化剂组分（A）的初始活性超过催化剂组分（B）的初始活性。 由于这种方法，在第一烯烃聚合反应之后不需要清空反应器，并且获得在第二烯烃聚合反应中获得的聚烯烃的期望质量所需的转变时间足够短以允许快速可靠的改变 的生产。