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    METHODS AND SYSTEMS FOR OLEFIN POLYMERIZATION
    1.
    发明申请
    METHODS AND SYSTEMS FOR OLEFIN POLYMERIZATION 审中-公开
    烯烃聚合的方法和系统

    公开(公告)号：WO2016168655A1

    公开(公告)日：2016-10-20

    申请号：PCT/US2016/027835

    申请日：2016-04-15

    Applicant: UNIVATION TECHNOLOGIES, LLC

    Inventor： SAVATSKY, Bruce J. ,  PEQUENO, R. Eric

    IPC: C08F2/34 ,  C08F2/01 ,  C08F210/02

    CPC classification number: C08F2/01 ,  B01J8/004 ,  B01J8/224 ,  B01J8/24 ,  C08F2/34 ,  C08F4/65922 ,  C08F210/02 ,  C08F2400/02 ,  C08L2314/02 ,  C08L2314/06 ,  C08F2500/24

    Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.

    Abstract translation: 提供了烯烃聚合的方法和系统。 烯烃聚合的方法可以包括使催化剂流过喷嘴并进入设置在反应器内的流化床。 该方法还可以包括使包含一种或多种单体，一种或多种惰性流体或其组合的进料通过注射喷嘴流入流化床。 进料的温度可能高于环境温度。 该方法还可以包括在足以产生聚烯烃的条件下使一种或多种烯烃与流化床内的催化剂接触。

    METHODS FOR OPERATING A POLYMERIZATION REACTOR
    5.
    发明申请
    METHODS FOR OPERATING A POLYMERIZATION REACTOR 审中-公开
    操作聚合反应器的方法

    公开(公告)号：WO2016172567A1

    公开(公告)日：2016-10-27

    申请号：PCT/US2016/028966

    申请日：2016-04-22

    Applicant: UNIVATION TECHNOLOGIES, LLC

    Inventor： SAVATSKY, Bruce J. ,  PEQUENO, R. Eric ,  LOCKLEAR, Brandon C.

    IPC: C08F2/00

    CPC classification number: C08F210/16 ,  C08F4/659 ,  C08F4/65925 ,  C08F2410/01 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/12 ,  C08F110/02 ,  C08F2500/07 ,  C08F4/64148 ,  C08F4/65904

    Abstract: Methods for olefin polymerization are described. The methods include a) forming a first polyolefin under a first set of polymerization conditions in the presence of a first catalyst composition and a first concentration of at least a first continuity additive composition, the first polyolefin composition having a target density, 1, and a target Flow Index, FI1; and b) forming a second polyolefin composition under a second set of polymerization conditions in the presence of a second catalyst composition and a second concentration of a second continuity additive composition, the second polyolefin composition having a target density, 2, and a target Flow Index, FI2; wherein the process is essentially free of providing a polymerization neutralizing composition between steps a) and b).

    Abstract translation: 描述了烯烃聚合方法。 所述方法包括：a）在第一组聚合条件下，在第一催化剂组合物和至少第一连续性添加剂组合物的第一浓度的存在下，形成第一聚烯烃，所述第一聚烯烃组合物具有目标密度1和 目标流量指数，FI1; 和b）在第二组聚合条件下，在第二催化剂组合物和第二连续性添加剂组合物的第二浓度存在下，形成第二聚烯烃组合物，所述第二聚烯烃组合物具有目标密度2和目标流动指数 ，FI2; 其中所述方法基本上不含在步骤a）和b）之间提供聚合中和组合物。

    METHOD OF MAINTAINING A MELT FLOW INDEX OF A POLYETHYLENE POLYMER PRODUCT
    9.
    发明申请
    METHOD OF MAINTAINING A MELT FLOW INDEX OF A POLYETHYLENE POLYMER PRODUCT 审中-公开

    公开(公告)号：WO2018226787A1

    公开(公告)日：2018-12-13

    申请号：PCT/US2018/036202

    申请日：2018-06-06

    Applicant: UNIVATION TECHNOLOGIES, LLC

    Inventor： SAVATSKY, Bruce J. ,  PEQUENO, R. Eric ,  LOCKLEAR, Brandon C. ,  FARLEY, Jim

    IPC: C08F2/34 ,  C08F10/02

    Abstract: The present disclosure provides a method of maintaining a target value of a melt flow index of a polyethylene polymer product being synthesized with a metallocene catalyst in a fluidized bed gas phase reactor. The method includes producing the polyethylene polymer product at the target value of the melt flow index with a metallocene catalyst in a fluidized bed gas phase reactor at a steady state in which the fluidized bed gas phase reactor is at a first reactor temperature and receives feeds of hydrogen and ethylene at a hydrogen to ethylene feed ratio at a first ratio value. When a change in reactor temperature is detected, the hydrogen to ethylene feed ratio is changed from the first ratio value to a second ratio value so as to maintain the melt flow index value of the polyethylene polymer product at the target value.

    CONTROLLING REACTOR SPLIT AND A PRODUCT PARAMETER
    10.
    发明申请
    CONTROLLING REACTOR SPLIT AND A PRODUCT PARAMETER 审中-公开
    控制反应器分离和产品参数

    公开(公告)号：WO2018081226A1

    公开(公告)日：2018-05-03

    申请号：PCT/US2017/058225

    申请日：2017-10-25

    Applicant: UNIVATION TECHNOLOGIES, LLC

    Inventor： LYNN, Timothy R. ,  THOMAS, JR., Daniel N. ,  SAVATSKY, Bruce J. ,  SZUL, John F.

    IPC: C08F2/34 ,  C08L23/04 ,  G06F12/00 ,  G06F19/00

    Abstract: A method including a) polymerizing at least one monomer in a gas phase reactor in the presence of a supported multimodal catalyst system to form a multimodal polyethylene product having a reactor split equal to respective weight fractions of resin components in the polyethylene product; b) applying a predetermined formula for a product parameter of the multimodal polyethylene product; c) obtaining incorporation data and production rate data from the reaction based upon the predetermined formula; d) determining an actual hydrogen leading indicator; e) comparing the actual hydrogen leading indicator to a target value for a hydrogen leading indicator to determine a deviation of the actual hydrogen leading indicator from the target value; and f) adjusting an amount of a catalyst precursor being fed to the gas phase reactor to control reactor split and a product parameter.

    Abstract translation: 一种方法，包括：a）在气相反应器中在负载型多峰催化剂体系存在下聚合至少一种单体以形成多峰聚乙烯产物，所述多峰聚乙烯产物具有等于相应重量分数的树脂组分 在聚乙烯产品中; b）对多峰聚乙烯产品的产品参数应用预定的配方; c）基于预定公式从反应中获得掺入数据和生产速率数据; d）确定实际的氢气先行指标; e）将实际氢导致指标与氢导致指标的目标值进行比较以确定实际导氢指标与目标值的偏差; 和f）调节供入气相反应器的催化剂前体的量以控制反应器分流和产物参数。

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