PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS
    2.
    发明申请
    PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS 有权
    油相的气相聚合方法

    公开(公告)号:US20100317811A1

    公开(公告)日:2010-12-16

    申请号:US12735090

    申请日:2008-12-17

    IPC分类号: C08F2/01

    摘要: A process for the gas-phase polymerization of α-olefins carried out in two interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, the process being characterized in that: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer by introducing into the upper part of said downcomer a liquid stream LB having a composition different from the gaseous mixture present in the riser; (b) the ratio R between the flow rate Fp of polymer circulated between said downcomer and said riser and the flow rate LB of said liquid being adjusted in a range from 10 to 50.

    摘要翻译: 一种用于在两个相互连接的聚合区中进行的α-烯烃的气相聚合的方法,其中生长的聚合物颗粒在快速流化条件下流过第一个所述聚合区(提升管),离开所述提升管并进入所述 聚合区(降液管),通过它们以致密化形式向下流动,该方法的特征在于:(a)通过引入所述降液管的上部,存在于提升管中的气体混合物被全部或部分地防止进入降液管 具有与提升管中存在的气体混合物不同的组成的液体流LB; (b)在所述降液管和所述提升管之间循环的聚合物的流量Fp与所述液体的流量LB之间的比R调节在10至50的范围内。

    Loop reactor with varying diameter for olefin polymerization
    3.
    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

    IPC分类号: C08F2/12 B01J19/18

    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

    IPC分类号: C08F2/00

    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%。

    Large-volume reactor having a plurality of process spaces
    5.
    发明申请
    Large-volume reactor having a plurality of process spaces 有权
    具有多个处理空间的大容积反应器

    公开(公告)号:US20040228204A1

    公开(公告)日:2004-11-18

    申请号:US10738677

    申请日:2003-12-17

    IPC分类号: B01F007/02

    摘要: A large-volume reactor (10) for treating a free-flowing material, having a housing (12) which surrounds an interior space (14), a material feed (11) at one end of the housing (12) and a material discharge (13) at the other end of the housing (12). A rotor shaft (22), which is driven in rotation about its axis and conveys the material in the direction from the material feed (11) to the material discharge (13), is arranged in the interior space (14). A partition (16) in the interior space (14) defines two separate process spaces (18null, 18null) from one another, and the partition (16) includes a build-up system (24) having a build-up system passage (26) which leads from an inlet opening (40) which opens out into the first process space (18null), to an outlet opening (42) which opens out into the second process space (18null). The build-up system passage (26) is configured to pass the material from the first process space (18null) into the second process space (18null) and so that the flowing material forms a barrier which effectively prevents gas from passing through the passage.

    摘要翻译: 一种用于处理自由流动材料的大容量反应器(10),其具有围绕内部空间(14)的壳体(12),在壳体(12)的一端处的材料进料(11)和材料排出 (13)在壳体(12)的另一端。 转动轴(22)被布置在内部空间(14)中,该转子轴(22)围绕其轴线旋转并沿材料进给(11)的方向传送到材料排出口(13)。 内部空间(14)中的分隔件(16)限定了彼此分开的两个分开的处理空间(18',18“),分隔件(16)包括一个积聚系统(24) 从通向第一处理空间(18')的入口开口(40)通向通向第二处理空间(18“)的出口(42)的通道(26)。 积聚系统通道(26)被配置成将材料从第一处理空间(18')传送到第二处理空间(18“)中,使得流动的材料形成屏障,其有效地防止气体通过 通道。