Apparatus and process for polymerising olefin in gas phase
    32.
    发明授权
    Apparatus and process for polymerising olefin in gas phase 失效
    在气相中聚合烯烃的装置和方法

    公开(公告)号:US5928612A

    公开(公告)日:1999-07-27

    申请号:US971543

    申请日:1997-11-17

    申请人: Jean-Claude Chinh

    发明人: Jean-Claude Chinh

    摘要: The present invention relates to an apparatus for gas phase polymerisation of olefins(s), essentially comprising a fluidized bed reactor and at least one conduit for drawing off polymer provided with an isolation valve and connecting the vertical side wall of the reactor to a lock hopper, the said conduit leaving the vertical side wall of the reactor while being directed downwards so that each part of the said conduit forms with a horizontal plane an angle A ranging from 35.degree. to 90.degree.. It also relates to a process for continuous gas-phase polymerisation of olefin(s) in a fluidized-bed reactor, comprising drawing off the polymer from the vertical side wall of the reactor into a lock hopper via a draw-off conduit so that all flow of the polymer in the draw-off conduit is produced according to a downward direction forming with a horizontal plane an inclination with an angle A at least equal to the angle of repose .beta. of the polymer and not exceeding 90.degree.. The present invention improves the degree of filling of the lock hopper and reduces the amount of gas drawn off with the polymer. (FIG. 1).

    摘要翻译: 本发明涉及一种用于烯烃气相聚合的装置,其基本上包括流化床反应器和用于抽出设置有隔离阀的聚合物的至少一个管道,并将反应器的垂直侧壁连接到闭锁料斗 ,所述管道在向下引导下离开反应器的垂直侧壁,使得所述管道的每个部分以水平面形成角度A为35°至90°。 它还涉及在流化床反应器中连续气相聚合烯烃的方法,其包括将聚合物从反应器的垂直侧壁通过排出导管抽出到锁料斗中,使得所有 聚合物在排出导管中的流动是根据向下的方向产生的,水平面的倾角与角度A至少等于聚合物的休止角β不超过90°。 本发明提高了封闭料斗的填充程度,并且减少了用聚合物排出的气体的量。 (图。1)。

    Material drying system
    33.
    发明授权
    Material drying system 失效
    材料干燥系统

    公开(公告)号:US5658142A

    公开(公告)日:1997-08-19

    申请号:US388531

    申请日:1995-02-14

    摘要: A material drying system includes a pulse combustor having a combustion chamber and an elongate tailpipe forming a resonant system with the combustion chamber. The tailpipe has an inlet for material to be dried and an outlet through which the material is discharged in a pulsating gas stream when the combustor is in operation. The tailpipe discharges into a vertical drying duct which leads to a cyclone separator. Part of the exhaust gas leaving the cyclone separator is recycled and used to cool the combustion chamber and tailpipe. Part of the dried material leaving the cyclone separator can be mixed with new incoming wet material to lower the overall moisture content of the material to be dried. The pulse combustor provides a substantial portion of the motive force required to operate the system.

    摘要翻译: 材料干燥系统包括具有燃烧室的脉冲燃烧器和形成具有燃烧室的共振系统的细长尾管。 尾管具有用于待干燥的材料的入口和当燃烧器运行时材料以脉动气流排放的出口。 排气管排放到通向旋风分离器的垂直干燥管道中。 离开旋风分离器的废气的一部分被再循环并用于冷却燃烧室和尾管。 离开旋风分离器的干燥材料的一部分可以与新进入的湿材料混合,以降低要干燥的材料的总体水分含量。 脉冲燃烧器提供操作系统所需的动力的大部分。