Polymerization control process
    2.
    发明授权
    Polymerization control process 有权
    聚合控制过程

    公开(公告)号:US06586539B2

    公开(公告)日:2003-07-01

    申请号:US09863430

    申请日:2001-05-24

    IPC分类号: C08F234

    摘要: A process for controlling a continuous fluidised bed reactor (co-)polymerisation process which comprises (1) withdrawing from the reactor a hot recycle stream containing a principal monomer and at least one other unreacted reactant, (2) cooling part or all of the recycle stream withdrawn from the reactor, and (3) recycling part or all of the cooled recycle stream containing the principal monomer and the unreacted reactant(s) through the polymerisation zone in the reactor in the presence of a polymerisation catalyst under reactive conditions, wherein the controlling process consists in maintaining at least one of the reactant gradients (Gri) within a range of values outside which sheeting or unstable operations would otherwise occur.

    摘要翻译: 一种用于控制连续流化床反应器(共)聚合方法的方法,其包括(1)从反应器中排出含有主要单体和至少一种其它未反应的反应物的热循环流,(2)冷却部分或全部循环 从反应器中取出的物流,和(3)在反应条件下,在聚合催化剂存在下,将反应器中含有主要单体和未反应的反应物的部分或全部冷却循环物流循环通过聚合区,其中 控制过程包括将反应物梯度(Gri)中的至少一个保持在外部范围内的值,否则将在其之外发生片材或不稳定的操作。