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    Reactor cooling system
    1.
    发明授权
    Reactor cooling system 失效
    反应堆冷却系统

    公开(公告)号：US08273299B2

    公开(公告)日：2012-09-25

    申请号：US12735353

    申请日：2009-02-04

    Applicant: Marc Parisel ,  Brent Walworth

    Inventor： Marc Parisel ,  Brent Walworth

    IPC: B01J19/00 ,  F25B29/00

    CPC classification number: B01J19/0013 ,  B01J19/2435 ,  B01J2219/00038 ,  B01J2219/0004 ,  B01J2219/00094 ,  C08F2/01

    Abstract: Process for removing heat from at least two reactors forming at least part of a polymerization reactor system for a multimodal polymerization in which the reactors are linked in series and all produce at least one component of the same polymer. The process includes cooling a stream of fluid in one or more heat exchangers and passing part of it to the cooling system of a first reactor and part of it to the cooling system of a second reactor, so as to remove the heat from said reactors, and passing back through the heat exchangers a return flow having a portion of the combined exit flows of the cooling fluids used to remove the heat from each of the reactors. The heat exchangers provide at least 90% of the cooling requirement for the reactors, and a portion of the combined exit flows from the reactors bypasses at least one of the heat exchangers and is passed directly to the cooling system of one or more of the reactors. The cooling circuit is powered by no more than one pump at any one time.

    Abstract translation: 从至少两个反应器中除去热量的方法，形成至少部分用于多峰聚合的聚合反应器系统，其中反应器串联连接并且都产生相同聚合物的至少一种组分。 该方法包括在一个或多个热交换器中冷却流体流并将其一部分通过第一反应器的冷却系统并将其一部分通入第二反应器的冷却系统，以便从所述反应器中除去热量， 并且通过热交换器返回具有用于从每个反应器去除热量的冷却流体的组合出口流的一部分的回流。 热交换器为反应器提供至少90％的冷却要求，并且来自反应器的组合出口的一部分流过至少一个热交换器，并且直接通过一个或多个反应器的冷却系统 。 冷却回路在任何一个时间由不超过一个泵供电。

    Olefin polymerisation process
    2.
    发明授权
    Olefin polymerisation process 有权
    烯烃聚合方法

    公开(公告)号：US08114944B2

    公开(公告)日：2012-02-14

    申请号：US12736864

    申请日：2009-05-18

    Applicant: Marc Parisel ,  Brent Walworth

    Inventor： Marc Parisel ,  Brent Walworth

    IPC: C08F2/12 ,  C08F6/24 ,  B01D43/00

    CPC classification number: C08F10/00 ,  B01J19/2435 ,  B01J19/245 ,  Y10S526/92 ,  C08F2/14 ,  C08F2/001

    Abstract: Continuous process for manufacturing a polyolefin resin in at least two reactors in which in a first polymerization reactor, an olefin is polymerized continuously in the presence of a catalyst and a diluent to produce a first suspension comprising the diluent and polyolefin particles. At least a portion of the first suspension is transferred from the first polymerisation reactor to a second polymerisation reactor where further polymerisation takes place. A further suspension containing diluent and polymer particles is withdrawn from the second reactor and transferred to two separators, in each of which separators a diluent-rich flow and a concentrated suspension of polyolefin particles are formed and separated. The diluent-rich flow from one separator is recycled to a reactor preceding the second reactor, and the diluent-rich flow from the other separator is recycled to the second reactor. The invention enables higher separator efficiencies to be achieved.

    Abstract translation: 在至少两个反应器中制造聚烯烃树脂的连续方法，其中在第一聚合反应器中，烯烃在催化剂和稀释剂存在下连续聚合以产生包含稀释剂和聚烯烃颗粒的第一悬浮液。 第一悬浮液的至少一部分从第一聚合反应器转移到进一步聚合的第二聚合反应器中。 将含有稀释剂和聚合物颗粒的另外的悬浮液从第二反应器中排出并转移到两个分离器中，其中每个分离器形成和分离富含稀释剂的流和聚集体颗粒的浓缩悬浮液。 来自一个分离器的稀释剂富集的流被再循环到第二反应器之前的反应器中，并且来自另一个分离器的富含稀释剂的流被再循环到第二反应器。 本发明可实现更高的分离效率。

    Polymerisation reactor
    3.
    发明授权
    Polymerisation reactor 有权
    聚合反应器

    公开(公告)号：US09174193B2

    公开(公告)日：2015-11-03

    申请号：US12735349

    申请日：2009-02-04

    Applicant: Marc Parisel ,  Brent Walworth

    Inventor： Marc Parisel ,  Brent Walworth

    IPC: B01J19/24 ,  B01J19/00 ,  B01J3/04 ,  B01J8/00 ,  C08F2/00 ,  C08F2/01 ,  F16L9/00 ,  F16L9/18

    CPC classification number: B01J19/2435 ,  B01J3/044 ,  B01J19/0013 ,  B01J2219/00094 ,  B01J2219/00243

    Abstract: Tubular reactor for use in polymerization reactions having a design pressure PR of 40-65 barg. The reactor includes a tube with a wall, and at least a portion of the tube is oriented vertically, with at least part of the vertical portion being surrounded by a concentric jacket for the passage of cooling fluid. The design pressure in barg of the jacket PJ is less than 0.0018·PR2.25.

    Abstract translation: 用于聚合反应的管式反应器，其设计压力PR为40-65巴。 反应器包括具有壁的管，并且管的至少一部分垂直取向，垂直部分的至少一部分由用于冷却流体通过的同心夹套包围。 夹套PJ的设计压力小于0.0018·PR2.25。

    REACTOR COOLING SYSTEM
    4.
    发明申请
    REACTOR COOLING SYSTEM 失效
    反应器冷却系统

    公开(公告)号：US20100276117A1

    公开(公告)日：2010-11-04

    申请号：US12735353

    申请日：2009-02-04

    Applicant: Marc Parisel ,  Brent Walworth

    Inventor： Marc Parisel ,  Brent Walworth

    IPC: F25B29/00

    CPC classification number: B01J19/0013 ,  B01J19/2435 ,  B01J2219/00038 ,  B01J2219/0004 ,  B01J2219/00094 ,  C08F2/01

    Abstract: A cooling circuit for at least two reactors which form at least part of a polymerisation reactor system is described, which circuit comprises: one or more heat exchangers which provide at least 95% of the cooling requirement for the cooling circuit; a cold flow of cooling fluid exiting the one or more heat exchangers, part of which cold flow passes into a first inlet flow directed to the cooling system of a first reactor, and part of which passes into a second inlet flow directed to the cooling system of a second reactor; a return flow comprising the combined exit flows of the cooling fluids used to remove the heat from each of the reactors; wherein a potion of the return flow is diverted to bypass at least one of the heat exchangers, and is wholly or partly incorporated into at least one of the first and second inlet flows. The application also covers a process using the above circuit.

    Abstract translation: 描述形成聚合反应器系统的至少一部分的至少两个反应器的冷却回路，该回路包括：一个或多个热交换器，其为冷却回路提供至少95％的冷却要求; 冷却流体离开一个或多个热交换器的冷流，其中一部分冷流通入到第一反应器的冷却系统的第一入口流中，其一部分进入朝向冷却系统的第二入口流 的第二反应器; 返回流包括用于从每个反应器中除去热量的冷却流体的组合出口流; 其中所述回流的一部分被转向以绕过所述热交换器中的至少一个，并且全部或部分地并入所述第一入口流和所述第二入口流中的至少一个。 该应用还涵盖使用上述电路的过程。

    OLEFIN POLYMERISATION PROCESS
    7.
    发明申请
    OLEFIN POLYMERISATION PROCESS 有权
    烯烃聚合方法

    公开(公告)号：US20110105702A1

    公开(公告)日：2011-05-05

    申请号：US12736864

    申请日：2009-05-18

    Applicant: Marc Parisel ,  Brent Walworth

    Inventor： Marc Parisel ,  Brent Walworth

    IPC: C08F2/01

    CPC classification number: C08F10/00 ,  B01J19/2435 ,  B01J19/245 ,  Y10S526/92 ,  C08F2/14 ,  C08F2/001

    Abstract: A continuous process for manufacturing a polyolefin resin in at least two reactors in series is described, in which: in a first polymerisation reactor, an olefin is polymerised continuously in the presence of a catalyst and a diluent to produce a first suspension comprising the diluent and polyolefin particles; at least a portion of said first suspension is transferred from the first polymerisation reactor to a second polymerisation reactor where further polymerisation takes place; a further suspension comprising diluent and polymer particles is withdrawn from the second reactor and transferred to two separators, in each of which separators a diluent-rich flow and a concentrated suspension of polyolefin particles are formed and separated, wherein the diluent-rich flow from one separator is recycled to a reactor preceding the second reactor, and the diluent-rich flow from the other separator is recycled to the second reactor. The invention enables higher separator efficiencies to be achieved.

    Abstract translation: 描述了在串联的至少两个反应器中制造聚烯烃树脂的连续方法，其中：在第一聚合反应器中，烯烃在催化剂和稀释剂存在下连续聚合以产生包含稀释剂的第一悬浮液和 聚烯烃颗粒; 所述第一悬浮液的至少一部分从第一聚合反应器转移到进行进一步聚合的第二聚合反应器; 将包含稀释剂和聚合物颗粒的另外的悬浮液从第二反应器中排出并转移到两个分离器中，每个分离器中形成和分离富含稀释剂的流和聚集体颗粒的浓缩悬浮液，其中富含稀释剂的流从一个 分离器再循环到第二反应器之前的反应器中，并且来自另一个分离器的富稀释流循环到第二反应器。 本发明可实现更高的分离效率。

    SLURRY PHASE POLYMERISATION PROCESS
    9.
    发明申请
    SLURRY PHASE POLYMERISATION PROCESS 有权
    浆料相聚合方法

    公开(公告)号：US20100273960A1

    公开(公告)日：2010-10-28

    申请号：US12733379

    申请日：2008-08-29

    Applicant: Benoit Koch ,  Daniel Marissal ,  Marc Parisel ,  Brent Walworth

    Inventor： Benoit Koch ,  Daniel Marissal ,  Marc Parisel ,  Brent Walworth

    IPC: C08F2/01

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08L23/06 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2308/00 ,  C08F2/14 ,  C08F2/001 ,  C08L2666/06 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/01

    Abstract: Process for producing a multimodal polyethylene in at least two loop reactors connected in series, in which 20-80 wt % of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80 wt % of a low molecular weight (LMW) polymer is made in suspension in a second reactor, one polymer being made in the presence of the other in either order, wherein the ratio of the average activity in the LMW reactor to the average activity in the HMW reactor is from 0.25 and 1.5, where average activity in each reactor is defined as the rate of polyethylene produced in the reactor (kgPE/hr)/[ethylene concentration in the reactor (mol %)×residence time in the reactor (hours)×feed rate of catalyst into the reactor (g/hr)], residence time being defined as the mass of the polymer in the reactor (kg)/the output rate of polymer from the reactor (kg/hr), and the volumes of the two reactors differ by less than 10%.

    Abstract translation: 在至少两个串联连接的环管反应器中制备多峰聚乙烯的方法，其中将20-80重量％的高分子量（HMW）聚合物悬浮在第一反应器中，和20-80重量％的低分子量 重量（LMW）聚合物在第二反应器中以悬浮液形式制备，一种聚合物在另一种反应器的存在下制备，其中LMW反应器中的平均活性与HMW反应器中的平均活性的比例为0.25 和1.5，其中每个反应器中的平均活性定义为在反应器中产生的聚乙烯的速率（kgPE / hr）/ [反应器中的乙烯浓度（mol％）×反应器中的停留时间（小时）×催化剂的进料速率 进入反应器（g / hr）]，停留时间定义为反应器中聚合物的质量（kg）/来自反应器的聚合物的输出速率（kg / hr），两个反应器的体积分别为 小于10％。

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