Process and apparatus for producing olefin polymers
    6.
    发明公开
    Process and apparatus for producing olefin polymers 有权
    Verfahren und Vorrichtung zur Herstellung von Olefinpolymeren

    公开(公告)号:EP1415999A1

    公开(公告)日:2004-05-06

    申请号:EP02396161.8

    申请日:2002-10-30

    IPC分类号: C08F2/14 C08F2/34 C08F10/00

    摘要: The present invention concerns a process and an apparatus for continuous polymerisation of olefin monomers in a cascade of polymerisation reactors. According to the process, an olefin monomer is polymerised first in slurry phase in an inert hydrocarbon diluent in at least one loop reactor and then, subsequently, in gas phase in at least one gas phase reactor. According to the invention, a polymer slurry is continuously withdrawn from the loop reactor and optionally concentrated. The concentrated slurry is conducted to a high pressure flash unit in order to remove the remaining fluid phase, and fed to the gas phase reactor. With the process described in this invention, it is possible to produce bimodal polyethylene with good properties. The operation of the process is stable because of the truly continuous operation.

    摘要翻译: 烯烃聚合物通过从环管反应器(1)连续地抽出含有聚合物和流体相的聚合物浆料来生产,任选地将浆料浓缩,将浓缩的浆料导入高压闪蒸装置,并将产物流(32)送入气体 相反应器(4)。 在连续操作的多级聚合顺序中的催化体系存在下制备烯烃聚合物,其中烯烃单体首先在烃稀释剂或液体单体中在淤浆相中在环流反应器中聚合,所述浆料具有第一 在气相反应器中随后在气相中的固体浓度包括连续地从环管反应器中抽出含有聚合物和流体相的聚合物浆料,其进一步含有烃和任选的氢; 可选地通过除去一部分流体相浓缩浆料以提供浓缩的浆料; 将具有高于第一固体浓度的第二固体浓度的浓缩浆料导入高压闪蒸装置以除去所有剩余的流体相,并提供含有聚合物固体和气体悬浮液的产物流; 并将闪蒸装置的产物流送入气相反应器。 在催化体系存在下,还包括用于生产烯烃聚合物的设备的独立权利要求,其包括级联环管反应器,水力旋流器(2)和高压闪蒸和气相反应器。