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    Continuous slurry polymerization volatile removal
    4.
    发明授权
    Continuous slurry polymerization volatile removal 有权
    连续淤浆聚合挥发性去除

    公开(公告)号：US06204344B1

    公开(公告)日：2001-03-20

    申请号：US09313818

    申请日：1999-05-18

    Applicant: James A. Kendrick ,  Thomas W. Towles ,  Scott T. Roger

    Inventor： James A. Kendrick ,  Thomas W. Towles ,  Scott T. Roger

    IPC: C08F200

    CPC classification number: B01J19/1837 ,  B01D3/06 ,  B01J8/003 ,  B01J8/0055 ,  B01J8/007 ,  B01J8/382 ,  B01J19/0053 ,  B01J2208/0007 ,  B01J2208/00539 ,  B01J2208/00761 ,  B01J2208/00769 ,  B01J2208/00867 ,  B01J2219/00006 ,  B01J2219/00033 ,  B01J2219/00103 ,  B01J2219/00114 ,  B01J2219/00162 ,  B01J2219/00164 ,  B01J2219/00191 ,  B01J2219/002 ,  B01J2219/00213 ,  B01J2219/00231 ,  B01J2219/00236 ,  B01J2219/0024 ,  C08F2/00 ,  C08F6/003 ,  C08F10/00 ,  C08F210/16 ,  C08F2/14 ,  C08F210/14

    Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the polymer solids which remain after removal of about 50 to 100% of the inert diluent therefrom to a second flash tank at a lower pressure.

    Abstract translation: 公开了一种用于从包含稀释剂，未反应单体和聚合物固体的聚合流出物连续分离包含稀释剂和未反应单体的液体介质的方法/装置，其包括通过排放阀将淤浆反应器的聚合流出物连续排出并将传输导管 具有锥形底部的第一中间压力闪蒸罐，该锥形底部由基本上直的侧面倾斜的水平面倾斜，该水平面等于或大于浆料/聚合物固体的滑动角度以及直径（d）的出口密封室， 长度（l），以便在出口密封室中保持所需体积的浓缩的聚合物固体/浆料，以便形成压力密封，同时连续地将所述第一闪蒸罐的浓缩聚合物固体/浆料底部产物的塞流从出口 密封室通过密封室出口减速器，斜面由基本上直的侧面i定义 以等于或大于在约50至100％的惰性稀释剂从其中移除至较低压力的第二闪蒸罐后保留的聚合物固体的滑动角度等于或大于水平角的角度倾斜。

    Catalyst system and process
    5.
    发明授权
    Catalyst system and process 有权
    催化剂系统和工艺

    公开(公告)号：US07632901B2

    公开(公告)日：2009-12-15

    申请号：US10456604

    申请日：2003-06-06

    Applicant: Stanley J. Katzen ,  Zerong Lin ,  Anthony N. Speca ,  James A. Kendrick ,  Scott T. Roger

    Inventor： Stanley J. Katzen ,  Zerong Lin ,  Anthony N. Speca ,  James A. Kendrick ,  Scott T. Roger

    IPC: C08F4/52 ,  C08F4/58

    CPC classification number: C08F10/00 ,  C08F210/16 ,  C08F210/18 ,  C08F4/69 ,  C08F4/025 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/13 ,  C08F2500/25 ,  C08F236/20

    Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.

    Abstract translation: 公开了使用负载的铬催化剂体系制备负载型铬催化剂体系和聚合乙烯的方法。 在聚合反应器中形成催化剂体系的方法包括通过将催化剂和助催化剂共进料到反应器或将催化剂和助催化剂分别供入反应器来使负载的铬催化剂和金属烷基助催化剂接触，形成催化剂体系。 催化剂和助催化剂在进料或共进料步骤之前不预先接触。 催化剂体系可与乙烯和任选的α-烯烃共聚单体接触以形成聚乙烯。

    Polymerization process
    6.
    发明授权
    Polymerization process 有权
    聚合过程

    公开(公告)号：US06921798B2

    公开(公告)日：2005-07-26

    申请号：US10456283

    申请日：2003-06-06

    Applicant: James A. Kendrick ,  Scott T. Roger ,  Stanley J. Katzen ,  Zerong Lin ,  Anthony N. Speca

    Inventor： James A. Kendrick ,  Scott T. Roger ,  Stanley J. Katzen ,  Zerong Lin ,  Anthony N. Speca

    IPC: F16L9/12 ,  C08F2/00 ,  C08F4/69 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2/00 ,  C08F4/69 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/13 ,  C08F210/14 ,  C08F210/08

    Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more α-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.

    Abstract translation: 公开了用于生产具有目标密度和改善的耐环境应力的聚乙烯的聚合方法。 乙烯和任选的一种或多种α-烯烃共聚单体，负载的铬催化剂和金属烷基助催化剂接触以制备聚乙烯。 确定聚乙烯的密度，并且响应于聚乙烯的密度和目标密度之间的偏差来调节助催化剂的浓度。 催化剂和助催化剂可以单独进料到反应器中，或者可以共同进料，而不需要在将催化剂和助催化剂引入反应器之前预接触催化剂和助催化剂。

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