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    • 52. 发明授权
    • Method and apparatus for discharging polymerization reactors
    • 用于排放聚合反应器的方法和装置
    • US07655192B2
    • 2010-02-02
    • US11075921
    • 2005-03-10
    • Jouni KiveläKlaus Nyfors
    • Jouni KiveläKlaus Nyfors
    • B01J8/18C08G85/00C08F2/00
    • B01J8/24B01J8/003B01J8/005B01J2208/00681B01J2208/00761B01J2219/00247C08F2/34C08F10/00
    • A method and an apparatus of discharging polymer from a continuously operated gas phase reactor, wherein at least one monomer is polymerized in a bed containing active catalyst formed by catalyst and polymer particles suspended in a fluid, the bed defining a fluidized bed level in said reactor. The invention includes continuously withdrawing polymer powder from the reactor; and adjusting the discharge rate of the polymer powder so as to maintain a constant bed level during polymerization. By means of the invention the discharge of the polymer can be made truly continuous without any disturbance of the polymerization. The rate of withdrawn polymer can be flexibly adjusted depending on the progress of the polymerization and it can also easily be scaled up if the capacity of the reactor is increased.
    • 一种从连续操作的气相反应器中排出聚合物的方法和装置,其中至少一种单体在包含由催化剂形成的活性催化剂和悬浮在流体中的聚合物颗粒的床中聚合,所述床在所述反应器中限定流化床水平 。 本发明包括从反应器中连续取出聚合物粉末; 并调节聚合物粉末的排出速率,以便在聚合期间保持恒定的床层。 通过本发明,可以使聚合物的排放真正连续,而不会导致聚合紊乱。 退出的聚合物的速率可以根据聚合的进展而灵活地调节,并且如果反应器的容量增加,也可以容易地放大。