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    Loop Reactor With Varying Diameter For Olefin Polymerization
    1.
    发明申请
    Loop Reactor With Varying Diameter For Olefin Polymerization 有权
    环烯烃反应器用于烯烃聚合的不同直径

    公开(公告)号：US20080119624A1

    公开(公告)日：2008-05-22

    申请号：US10572817

    申请日：2004-09-16

    申请人： Shahram Mihan ,  Wolfgang Gsella ,  Peter Kolle ,  Joachim Wulff-Doring ,  Markus Meierhofer

    发明人： Shahram Mihan ,  Wolfgang Gsella ,  Peter Kolle ,  Joachim Wulff-Doring ,  Markus Meierhofer

    IPC分类号： C08F2/00

    CPC分类号： B01J19/2435 ,  B01J8/007 ,  B01J2208/00212 ,  B01J2208/00584 ,  B01J2219/00094 ,  B01J2219/00173 ,  C08F10/02 ,  C08F210/16 ,  Y02P20/544 ,  C08F2/01 ,  C08F2/14 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/24

    摘要： Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.

    摘要翻译： 在聚合催化剂存在下，在环状反应器中，在20〜150℃，但低于待形成的聚合物的熔点，聚合至少一种选自乙烯，丙烯和1-丁烯的烯烃单体的方法，以及 其中形成的聚合物存在于液体或超临界悬浮介质中的悬浮液中，并且其中悬浮液通过轴向泵循环，其中聚合以平均固体浓度进行 反应器在连续产物排出的情况下大于53重量％，反应器中的平均固体浓度大于45重量％，在不连续的产物排出的情况下，并且其中进行聚合 基于悬浮介质，乙烯浓度至少为10摩尔％。

    Loop reactor with varying diameter for olefin polymerization
    4.
    发明授权
    Loop reactor with varying diameter for olefin polymerization 有权
    具有不同直径的环烯烃反应器用于烯烃聚合

    公开(公告)号：US07517938B2

    公开(公告)日：2009-04-14

    申请号：US10572817

    申请日：2004-09-16

    申请人： Shahram Mihan ,  Wolfgang Gsella ,  Peter Kölle ,  Joachim Wulff-Döring ,  Markus Meierhöfer

    发明人： Shahram Mihan ,  Wolfgang Gsella ,  Peter Kölle ,  Joachim Wulff-Döring ,  Markus Meierhöfer

    IPC分类号： C08F2/12 ,  B01J19/18

    CPC分类号： B01J19/2435 ,  B01J8/007 ,  B01J2208/00212 ,  B01J2208/00584 ,  B01J2219/00094 ,  B01J2219/00173 ,  C08F10/02 ,  C08F210/16 ,  Y02P20/544 ,  C08F2/01 ,  C08F2/14 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/24

    摘要： Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.

    摘要翻译： 在聚合催化剂存在下，在环状反应器中，在20〜150℃，但低于待形成的聚合物的熔点，聚合至少一种选自乙烯，丙烯和1-丁烯的烯烃单体的方法，以及 其中形成的聚合物存在于液体或超临界悬浮介质中的悬浮液中，并且其中悬浮液通过轴向泵循环，其中聚合以平均固体浓度进行 反应器在连续产物排出的情况下大于53重量％，反应器中的平均固体浓度大于45重量％，在不连续的产物排出的情况下，并且其中进行聚合 基于悬浮介质，乙烯浓度至少为10摩尔％。

    PROCESS FOR MONITORING THE POLYMERIZATION OF ETHYLENE OR ETHYLENE AND COMONOMERS IN A TUBULAR-REACTOR AT HIGH-PRESSURES
    5.
    发明申请
    PROCESS FOR MONITORING THE POLYMERIZATION OF ETHYLENE OR ETHYLENE AND COMONOMERS IN A TUBULAR-REACTOR AT HIGH-PRESSURES 有权
    用于监测高压管状反应器中乙烯或乙烯和共聚物聚合的方法

    公开(公告)号：US20130274424A1

    公开(公告)日：2013-10-17

    申请号：US13995829

    申请日：2011-12-19

    申请人： Sebastian Weiand ,  Wolfgang Gsella ,  Victor Kuhne ,  Christian-Ulrich Schmidt ,  Tom Zimmermann

    发明人： Sebastian Weiand ,  Wolfgang Gsella ,  Victor Kuhne ,  Christian-Ulrich Schmidt ,  Tom Zimmermann

    IPC分类号： C08F10/02 ,  G01N7/00

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/02 ,  C08F210/16 ,  C08F2400/02 ,  G01N7/00 ,  C08F210/06 ,  C08F220/14 ,  C08F2/00 ,  C08F2/001

    摘要： Process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with one or more reaction zones, which is equipped with cooling jackets for cooling the tubular reactor with a cooling medium, comprising the steps of a) measuring as process parameters the temperature profile and the pressure of the reaction medium and the flow and temperature profile of the cooling medium along the reactor, b) monitoring the feeds of ethylene, if present comonomer, free-radical polymerization initiator and chain-transfer agent to all reaction zones, c) calculating, based on the measured process parameters and on a model for the polymerization process, concentrations for free-radical polymerization initiator, chain-transfer agent, ethylene and, if present, comonomers at at least so many positions along the reactor, that at least one calculation is carried out all 10 s for a volume unit flowing through the reactor, d) calculating, based on the measured process parameters and the calculated concentrations, the cooling power, the generation of heat, and the concentration of radicals, e) calculating, based on the calculated data of the cooling power, of the generation of heat, and of the concentration of radicals, the potential of a thermal runaway of the reaction mixture at the positions along the reactor which have the highest temperatures, and f) outputting an alarm signal if the calculated value for the potential of a thermal runaway exceeds a predefined value and process for polymerizing ethylene or ethylene and comonomers comprising such a monitoring process.

    摘要翻译： 在自由基聚合引发剂的存在下，在160MPa至350MPa的压力和100℃至350℃的温度范围内，监测乙烯或乙烯和共聚单体的聚合反应的方法， 具有一个或多个反应区的管式反应器，其配备有用于用冷却介质冷却管式反应器的冷却夹套，包括以下步骤：a）测量作为工艺参数的温度分布和反应介质的压力以及流动和温度 b）监测乙烯（如果存在的共聚单体，自由基聚合引发剂和链转移剂）进料到所有反应区的进料，c）根据测量的工艺参数和模型计算 对于聚合过程，自由基聚合引发剂，链转移剂，乙烯和（如果存在）共聚单体在至少这么多位置的浓度 反应器，对于流过反应堆的体积单位进行至少一次计算10秒，d）基于测量的过程参数和计算的浓度，计算冷却功率，产生热量和浓度 的自由基，e）基于计算的冷却功率的数据，计算出热的产生和自由基的浓度，反应混合物在沿着反应器的位置处的热失控的可能性为最高 温度，以及f）如果热失控潜力的计算值超过预定值，则输出报警信号，并且包括这样的监测过程的聚合乙烯或乙烯和共聚单体的方法。