Polymerization product pressures in olefin polymerization
    63.
    发明授权
    Polymerization product pressures in olefin polymerization 有权
    烯烃聚合中的聚合产物压力

    公开(公告)号:US08871886B1

    公开(公告)日:2014-10-28

    申请号:US13886893

    申请日:2013-05-03

    摘要: A process for making a low density polymer in a polymerization reactor system, the process comprising polymerizing an olefin monomer, and optionally an olefin comonomer, in the presence of a diluent in a polymerization reactor to make a polymerization product slurry consisting of a liquid phase and a solid phase, wherein the solid phase comprises an olefin polymer having a density of between about 0.905 g/cm3 to about 0.945 g/cm3; and discharging the polymerization product slurry from the polymerization reactor through a continuous take-off valve to make a mixture further comprising a vapor phase. The mixture comprises a pressure less than a bubble point pressure of a component in the polymerization product slurry.

    摘要翻译: 一种在聚合反应器系统中制备低密度聚合物的方法,该方法包括在稀释剂存在下在聚合反应器中聚合烯烃单体和任选的烯烃共聚单体以制备由液相和 固相,其中所述固相包含密度为约0.905g / cm 3至约0.945g / cm 3的烯烃聚合物; 并通过连续的取出阀将聚合产物浆料从聚合反应器排出,以制备进一步包含气相的混合物。 该混合物包含小于聚合产物浆料中组分的泡泡点压力的压力。

    Pressure Management for Slurry Polymerization
    64.
    发明申请
    Pressure Management for Slurry Polymerization 有权
    浆料聚合的压力管理

    公开(公告)号:US20140121334A1

    公开(公告)日:2014-05-01

    申请号:US13664944

    申请日:2012-10-31

    IPC分类号: C08F2/01

    摘要: Processes and systems for the production for pressure management of a polymerization product flowing from a loop polymerization reactor to a separation vessel in a slurry polymerization system are disclosed herein. For example, a process comprises withdrawing the polymerization product from a loop polymerization reactor, and conveying the withdrawn polymerization product to a separation vessel via a first pressure differential and a second pressure differential. The withdrawn polymerization product may flow through the first pressure differential before flowing through the second pressure differential, and the first pressure differential may be less than the second pressure differential.

    摘要翻译: 在本文中公开了用于从淤浆聚合系统中的环状聚合反应器流到分离容器的聚合产物的压力管理生产的方法和系统。 例如,一种方法包括从环路聚合反应器中取出聚合产物,并通过第一压力差和第二压差将抽出的聚合产物输送到分离容器。 撤回的聚合产物可能在流过第二压力差之前流过第一压力差,并且第一压力差可以小于第二压力差。