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    Methods for operating a polymerization reactor
    2.
    发明授权
    Methods for operating a polymerization reactor 有权
    操作聚合反应器的方法

    公开(公告)号：US08598283B2

    公开(公告)日：2013-12-03

    申请号：US13575872

    申请日：2011-02-17

    申请人： Eric J. Markel ,  Robert O. Hagerty ,  Richard B. Pannell ,  Michael E. Sieloff ,  Jerome Holveck

    发明人： Eric J. Markel ,  Robert O. Hagerty ,  Richard B. Pannell ,  Michael E. Sieloff ,  Jerome Holveck

    IPC分类号： C08F2/00 ,  C08F2/38 ,  C08F4/00 ,  C08F210/00

    CPC分类号： C08F10/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F2/34 ,  C08F2/42 ,  C08F2/00 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/18

    摘要： Methods for shutting down and restarting polymerization in a gas phase polymerization reactor are provided. The method can include introducing a polymerization neutralizer to the reactor in an amount sufficient to stop polymerization therein. The method can also include stopping recovery of a polymer product from the reactor and stopping introduction of a catalyst feed and a reactor feed to the reactor. The method can also include adjusting a pressure within the reactor from an operating pressure to an idling pressure. The method can also include adjusting a superficial velocity of a cycle fluid through the reactor from an operating superficial velocity to an idling superficial velocity. The method can also include maintaining the reactor in an idled state for a period of time.

    摘要翻译： 提供了在气相聚合反应器中关闭和重新开始聚合的方法。 该方法可以包括以足以阻止其中聚合的量向反应器中引入聚合中和剂。 该方法还可以包括停止从反应器中回收聚合物产物，并停止将催化剂进料和反应器进料引入反应器。 该方法还可以包括将反应器内的压力从操作压力调节到空载压力。 该方法还可以包括调节通过反应器的循环流体的表观速度从操作的表观速度到空转的表观速度。 该方法还可以包括将反应器维持在空闲状态一段时间。

    Method and apparatus for monitoring electrical properties of polymerization reactor wall film
    4.
    发明授权
    Method and apparatus for monitoring electrical properties of polymerization reactor wall film 有权
    监测聚合反应器壁膜电性能的方法和装置

    公开(公告)号：US08441250B2

    公开(公告)日：2013-05-14

    申请号：US12780088

    申请日：2010-05-14

    申请人： Eric J. Markel ,  Timothy R. Lynn

    发明人： Eric J. Markel ,  Timothy R. Lynn

    IPC分类号： G01R1/06

    CPC分类号： C08F10/00 ,  B01J8/1809 ,  B01J2208/00601 ,  B01J2219/0245 ,  C08F2400/02 ,  C08F2/34 ,  C08F2/002 ,  C08F2/00

    摘要： Disclosed is a method for using at least one static probe during polymerization in a fluid bed polymerization reactor system to monitor a coating on a surface of the reactor system and a distal portion of each static probe, wherein the coating is exposed to flowing fluid within the reactor system during the reaction. The surface may be a reactor bed wall (exposed to the reactor's fluid bed) and the coating is exposed to flowing, bubbling fluid within the fluid bed during the reaction. The method may include steps of: during the polymerization reaction, operating the static probe to generate a sequence of data values (“high speed data”) indicative of fluid flow variation (e.g., bubbling or turbulence), and determining from the high speed data at least one electrical property of the coating (e.g., of a portion of the coating on the distal portion of the static probe).

    摘要翻译： 公开了一种在流化床聚合反应器系统中在聚合过程中使用至少一个静态探针以监测反应器系统的表面上的涂层和每个静态探针的远端部分的方法，其中涂层暴露于在 反应器系统。 表面可以是反应器床壁（暴露于反应器的流化床），并且涂层在反应期间暴露于流化床内的流动的起泡流体。 该方法可以包括以下步骤：在聚合反应期间，操作静态探针以产生指示流体流动变化（例如，起泡或湍流）的数据值序列（“高速数据”），并从高速数据 涂层的至少一个电性质（例如，静电探针的远端部分上的涂层的一部分）。

    Method for on-line monitoring and control of polymerization processes and reactors to prevent discontinuity events
    5.
    发明授权
    Method for on-line monitoring and control of polymerization processes and reactors to prevent discontinuity events 失效
    用于在线监测和控制聚合过程和反应器以防止不连续事件的方法

    公开(公告)号：US08433443B2

    公开(公告)日：2013-04-30

    申请号：US12214469

    申请日：2008-06-19

    申请人： Robert O. Hagerty ,  Ian D. Burdett ,  Marc L. DeChellis ,  F. David Hussein ,  Eric J. Markel ,  Michael E. Muhle ,  Richard B. Pannell ,  Daniel P. Zilker

    发明人： Robert O. Hagerty ,  Ian D. Burdett ,  Marc L. DeChellis ,  F. David Hussein ,  Eric J. Markel ,  Michael E. Muhle ,  Richard B. Pannell ,  Daniel P. Zilker

    IPC分类号： G05B21/00

    CPC分类号： C08F10/00 ,  C08F2400/02 ,  C08F2/34 ,  C08F2/002 ,  C08F2/00

    摘要： Generally, a method of monitoring a polymerization reaction in a fluid bed reactor to generate, in on-line fashion, data indicative of the imminent occurrence of a discontinuity event (for example, sheeting) and optionally also control the reaction to prevent the occurrence of the discontinuity event is provided. Typical embodiments include the steps of generating in on-line fashion at least one of bed static data indicative of static charge in the fluidized bed and carryover static data indicative of carryover static; and generating at least one of temperature data (in on-line fashion using at least one monitored reaction parameter) indicative of a first temperature and acoustic emission data indicative of resin stickiness in the reactor, where the first temperature is indicative of at least one of degree of resin stickiness in the reactor and a characteristic of melting behavior of polymer resin in the reactor in the presence of at least one diluent.

    摘要翻译： 通常，监测流化床反应器中的聚合反应的方法，以在线方式产生指示即将发生的不连续事件（例如，片材）的数据，并且还可任选地控制反应以防止发生 提供不连续事件。 典型的实施方案包括以在线方式产生指示流化床中的静电荷的床静态数据中的至少一种并携带指示携带静电的静态数据的步骤; 并且产生指示在反应器中指示树脂粘性的第一温度和声发射数据的温度数据（以在线方式使用至少一个监测的反应参数）中的至少一个，其中第一温度表示以下中的至少一个： 在至少一种稀释剂存在下，反应器中的树脂粘性程度和聚合物树脂在反应器中的熔融行为的特征。

    Methods for Operating a Polymerization Reactor
    8.
    发明申请
    Methods for Operating a Polymerization Reactor 有权
    操作聚合反应器的方法

    公开(公告)号：US20120329962A1

    公开(公告)日：2012-12-27

    申请号：US13575872

    申请日：2011-02-17

    申请人： Eric J. Markel ,  Robert O. Hagerty ,  Richard B. Pannell ,  Michael E. Sieloff ,  Jerome Holveck

    发明人： Eric J. Markel ,  Robert O. Hagerty ,  Richard B. Pannell ,  Michael E. Sieloff ,  Jerome Holveck

    IPC分类号： C08F2/38

    CPC分类号： C08F10/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F2/34 ,  C08F2/42 ,  C08F2/00 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/18

    摘要： Methods for shutting down and restarting polymerization in a gas phase polymerization reactor are provided. The method can include introducing a polymerization neutralizer to the reactor in an amount sufficient to stop polymerization therein. The method can also include stopping recovery of a polymer product from the reactor and stopping introduction of a catalyst feed and a reactor feed to the reactor. The method can also include adjusting a pressure within the reactor from an operating pressure to an idling pressure. The method can also include adjusting a superficial velocity of a cycle fluid through the reactor from an operating superficial velocity to an idling superficial velocity. The method can also include maintaining the reactor in an idled state for a period of time.

    摘要翻译： 提供了在气相聚合反应器中关闭和重新开始聚合的方法。 该方法可以包括以足以阻止其中聚合的量向反应器中引入聚合中和剂。 该方法还可以包括停止从反应器中回收聚合物产物，并停止将催化剂进料和反应器进料引入反应器。 该方法还可以包括将反应器内的压力从操作压力调节到空载压力。 该方法还可以包括调节通过反应器的循环流体的表观速度从操作的表观速度到空转的表观速度。 该方法还可以包括将反应器维持在空闲状态一段时间。

    POLYMERIZATION REACTION MONITORING WITH DETERMINATION OF INDUCED CONDENSING AGENT CONCENTRATION FOR PREVENTING DISCONTINUITY EVENTS
    10.
    发明申请
    POLYMERIZATION REACTION MONITORING WITH DETERMINATION OF INDUCED CONDENSING AGENT CONCENTRATION FOR PREVENTING DISCONTINUITY EVENTS 有权
    用于确定诱导性冷凝剂浓度以防止不连续事件的聚合反应监测

    公开(公告)号：US20090234081A1

    公开(公告)日：2009-09-17

    申请号：US12407019

    申请日：2009-03-19

    申请人： Daniel N. Thomas, JR. ,  Eric J. Markel

    发明人： Daniel N. Thomas, JR. ,  Eric J. Markel

    IPC分类号： C08F2/00

    CPC分类号： C08F210/16 ,  C08F2400/02 ,  C08F2/005 ,  C08F2/00 ,  C08F2/34 ,  C08F210/14 ,  C08F2500/12

    摘要： A method for monitoring a polymer resin-producing polymerization reaction in a fluid bed reactor, including by determining in on-line fashion a maximum diluent (e.g., ICA) concentration and an optimal diluent (e.g., ICA) concentration in the reactor, whereby performing the reaction with diluent (e.g., ICA) concentration less than the maximum diluent concentration ensures an acceptably low risk that the resin in the reactor in the presence of condensable diluent gas will reach a condition of limiting stickiness. Preferably, the optimal diluent concentration maximizes production rate subject to relevant constraints. The method can also include at least one of the steps of controlling the reaction to achieve a desired production rate by controlling diluent (e.g., ICA) concentration, and controlling the reaction to prevent reactor temperature from reaching a reduced melt reference temperature at least substantially equal to a dry melt reference temperature minus a temperature depression value by which the dry melt reference temperature is depressed by presence of at least one condensable diluent gas with the resin in the reactor.

    摘要翻译： 一种用于监测流化床反应器中聚合物树脂生成聚合反应的方法，包括通过以在线方式确定反应器中的最大稀释剂（例如，ICA）浓度和最佳稀释剂（例如ICA）浓度，从而进行 与稀释剂浓度相比，稀释剂（例如，ICA）浓度的反应确保了在可冷凝的稀释气体存在下反应器中的树脂将达到极限粘性的可接受的低风险。 优选地，最佳稀释剂浓度最大化生产率受制于相关的约束。 该方法还可以包括以下步骤中的至少一个：通过控制稀释剂（例如，ICA）浓度来控制反应以达到所需的生产速率，并控制反应以防止反应器温度达到至少基本相等的降低的熔融参考温度 到干熔体参考温度减去通过在反应器中存在至少一种可冷凝稀释气体与树脂而使干熔体参考温度下降的温度下降值。