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    Ethylene Separation
    2.
    发明申请
    Ethylene Separation 有权
    乙烯分离

    公开(公告)号：US20120095181A1

    公开(公告)日：2012-04-19

    申请号：US12905966

    申请日：2010-10-15

    Applicant: John D. HOTTOVY ,  Ted CYMBALUK

    Inventor： John D. HOTTOVY ,  Ted CYMBALUK

    IPC: C08F2/38 ,  B01J19/00

    CPC classification number: C08F6/001 ,  B01D53/1487 ,  B01D53/1493 ,  B01D2252/20405 ,  B01D2252/20421 ,  B01D2252/20431 ,  B01D2252/20436 ,  B01D2252/20468 ,  B01D2252/504 ,  B01D2257/7022 ,  C08F10/02 ,  C08F110/02 ,  C08L23/04 ,  C08F2/00

    Abstract: A polyethylene production process, comprising contacting ethylene and a polymerization catalyst under suitable reaction conditions to yield a polymerization product stream, separating a light gas stream from the polymerization product stream, wherein the light gas stream comprises ethane and unreacted ethylene, contacting the light gas stream with an absorption solvent system, wherein at least a portion of the ethylene from the light gas stream is absorbed by the absorption solvent system, removing unabsorbed gases of the light gas stream from contact with the absorption solvent system to form a waste gas stream, and recovering ethylene from the absorption solvent system.

    Abstract translation: 一种聚乙烯生产方法，包括在合适的反应条件下使乙烯和聚合催化剂接触以产生聚合产物流，从聚合产物流中分离轻质气体流，其中轻质气流包含乙烷和未反应的乙烯，使轻质气体流 其中吸收溶剂系统，其中来自轻质气体流的乙烯的至少一部分被吸收溶剂系统吸收，除去轻质气体流的未吸收气体与吸收溶剂系统接触以形成废气流，以及 从吸收溶剂体系中回收乙烯。

    System and method for deinventory of polymerization reactor
    3.
    发明授权
    System and method for deinventory of polymerization reactor 有权
    聚合反应器脱气系统及方法

    公开(公告)号：US07999044B2

    公开(公告)日：2011-08-16

    申请号：US12204566

    申请日：2008-09-04

    Applicant: John D. Hottovy ,  John H. Tait ,  David H. Burns ,  Donald W. Verser ,  James E. Hein

    Inventor： John D. Hottovy ,  John H. Tait ,  David H. Burns ,  Donald W. Verser ,  James E. Hein

    IPC: C08F2/00 ,  B01J19/00

    CPC classification number: B01J4/008 ,  B01J19/1837 ,  B01J2204/005 ,  B01J2219/00094 ,  B01J2219/00159 ,  C08F10/00 ,  C08F2/14 ,  C08F2/01

    Abstract: A flash chamber sized to receive the effluent discharged from a polyolefin reactor during normal operation of the reactor and during a reactor dump, advantageously eliminating a reactor dump tank or alternate flash tank from the equipment outlay of a polyolefin manufacturing process. The flash chamber is sized to hold at least the polyolefin solids discharged from the reactor. A condenser fluidically coupled to an overhead portion of the flash chamber is sized to condense the flow rate of vaporized hydrocarbon (e.g., diluent, monomer, etc.) discharged overhead from the flash chamber during normal operation and during the reactor dump.

    Abstract translation: 闪蒸室的尺寸适于接收在反应堆的正常操作期间和反应器堆放期间从聚烯烃反应器排出的流出物，有利地从聚烯烃制造过程的设备消耗中消除反应堆倾倒罐或替代闪蒸罐。 闪蒸室的尺寸至少保持从反应器排出的聚烯烃固体。 流体耦合到闪蒸室的顶部部分的冷凝器的尺寸被设定为在正常操作期间和在反应堆堆放期间冷凝从闪蒸室排出的汽化烃（例如稀释剂，单体等）的流速。

    Process and apparatus for reducing take-off valve plugging in a polymerization process
    7.
    发明授权
    Process and apparatus for reducing take-off valve plugging in a polymerization process 有权
    在聚合过程中减少开关阀堵塞的方法和装置

    公开(公告)号：US07015289B2

    公开(公告)日：2006-03-21

    申请号：US10660824

    申请日：2003-09-12

    Applicant: John D. Hottovy ,  Dale A. Zellers ,  Randy L. Hagenson

    Inventor： John D. Hottovy ,  Dale A. Zellers ,  Randy L. Hagenson

    IPC: C08F2/12

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F2/01 ,  C08F2/14

    Abstract: A slurry polymerization process removes a portion of the fluid slurry without using a settling leg or a continuous take-off. The process uses a reactor take-off valve that is periodically fully closed and fully opened such that the withdrawn slurry is removed from the reactor in a discontinuous manner. The regular, periodic full closing and full opening of the take-off valve reduces instances of polymer plugging the take-off valve. In another aspect of the invention, a take-off valve is throttled in a repetitive pattern to reduce plugging of the take-off valve.

    Abstract translation: 淤浆聚合方法在不使用沉降腿或连续起飞的情况下除去一部分流体浆液。 该方法使用周期性地完全关闭并完全打开的反应器排出阀，使得排出的浆料以不连续的方式从反应器中移出。 起飞阀的常规，周期性全关闭和全开，减少了聚合物堵塞起飞阀的情况。 在本发明的另一方面，一个抽出阀以重复的模式节流，以减少排出阀的堵塞。

    Polymer slurry catalyst residue deactivation
    8.
    发明授权
    Polymer slurry catalyst residue deactivation 失效
    聚合物浆料催化剂残留物失活

    公开(公告)号：US4211863A

    公开(公告)日：1980-07-08

    申请号：US4123

    申请日：1979-01-17

    Applicant: Max P. McDaniel ,  John D. Hottovy ,  Melvin B. Welch

    Inventor： Max P. McDaniel ,  John D. Hottovy ,  Melvin B. Welch

    IPC: C08F6/02

    CPC classification number: C08F6/02 ,  Y10S526/904 ,  Y10T428/31851

    Abstract: Catalyst residues of a transition metal compound and an organometalliccompound contained in a polymer slurry are deactivated by contact with anhydrous carbon dioxide. Preferably the contacting is carried out in a transfer line connecting the reaction zone with a zone of sufficiently lower pressure that flashing of diluent occurs in the transfer line to assure mixing of the carbon dioxide and the catalyst residues.

    Abstract translation: 通过与无水二氧化碳接触，过渡金属化合物和聚合物浆料中含有的有机金属化合物的催化剂残余物失活。 优选地，接触在将反应区域与足够低的压力区域连接的输送管线中进行，在输送管线中发生稀释剂的闪蒸，以确保二氧化碳和催化剂残余物的混合。

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