Isoolefin-diolefin production process and apparatus therefor
    2.
    发明公开
    Isoolefin-diolefin production process and apparatus therefor 有权
    异烯烃/二烯烃 - 芳族硫化物和Vorrichtungdafür

    公开(公告)号:EP1571162A1

    公开(公告)日:2005-09-07

    申请号:EP05003492.5

    申请日:2005-02-18

    申请人: Lanxess Inc.

    摘要: In an isoolefin-diolefin rubber production process (e.g. a butyl rubber production process), the cold rubber slurry produced in the reaction vessel is transported from the reaction vessel to the flash tank during which time the cold slurry may be expressed to separate at least part of the cold liquid reaction medium from the isoolefin-diolefin rubber. The separated cold liquid reaction medium is transported off stream, for example by a mechanical filter, where it can be recycled back into the reaction vessel and/or where it can be used to cool a feed stream or streams of the reaction components. The isoolefin-diolefin rubber and the residual liquid reaction medium are transported to a flash tank for further processing. The ability to separate and recycle cold liquid reaction medium makes the process more economical. In one aspect, the slurry may be transported from the reaction vessel to the flash tank by a self-cleaning fully intermeshing corotating twin screw extruder, which helps overcome the problem of plugging due to rubber sticking to the surfaces of the slurry transfer apparatus.

    摘要翻译: 在异烯烃 - 二烯橡胶生产方法(例如丁基橡胶生产方法)中,在反应容器中产生的冷橡胶浆料从反应容器输送到闪蒸罐,在此期间冷浆料可以被表达以分开至少部分 的来自异烯烃 - 二烯烃橡胶的冷液体反应介质。 分离的冷液体反应介质例如通过机械过滤器离开运输,其中可以将其再循环回到反应容器中和/或其中可用于冷却反应组分的进料流或流。 将异烯烃 - 二烯烃橡胶和残留的液体反应介质输送到闪蒸罐进行进一步处理。 分离和回收冷液体反应介质的能力使得该方法更经济。 在一个方面,浆料可以通过自清洁完全相互啮合的同向旋转双螺杆挤出机从反应容器输送到闪蒸罐,这有助于克服由于橡胶粘附到浆料输送装置的表面而导致的堵塞问题。