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    • 7. 发明申请
    • Liquid nozzle with variable liquid level
    • 具有可变液位的液体喷嘴
    • US20030096923A1
    • 2003-05-22
    • US10221861
    • 2002-12-26
    • Jean-Louis ChamayouJean-Claude Chinh
    • A62B018/00C08G085/00
    • B01J8/1827B01J19/26B01J2219/00065B01J2219/00103B01J2219/0013B01J2219/00162B01J2219/00164B01J2219/00182B01J2219/00261B05B9/04C08F10/00Y10S526/901C08F2/34
    • The present invention relates to a nozzle for the injection of a liquid under pressure (3), comprising a vertical feed pipe (1) surmounted by a hollow head (3), the liquid under pressure being conducted between the outer wall (4) of the vertical feed pipe (1) and an inner tube (5), the upper part of the nozzle comprising at least one lateral orifice (6) for expelling the liquid under pressure (3). This nozzle is characterized in that the upper end of the inner tube (5) of the vertical feed pipe (1) emerges at a height above the lateral orifice(s) (6), thereby making it possible, when stopping the injection of the liquid under pressure (3), to introduce a gas under pressure (8) via the inner tube (5) of the vertical feed pipe (1). which generates an overpressure in the upper part of the nozzle in order, on the one hand, to lower the level of the liquid (9) under pressure (3) below the lateral orifice(s) (6) and, on the other hand, to prevent any backflow of solids, liquids and/or gases, from the medium into which the liquid under pressure (3) is injected. towards the inside of the nozzle.
    • 本发明涉及一种用于在压力下注入液体的喷嘴(3),其包括由中空头(3)所覆盖的垂直进料管(1),所述压力下的液体在 垂直进料管(1)和内管(5),喷嘴的上部包括用于在压力(3)下排出液体的至少一个侧向孔口(6)。 该喷嘴的特征在于,垂直进料管(1)的内管(5)的上端在侧向孔(6)的上方突出高度,从而使得可以在停止喷射 在压力下(3)的液体,通过垂直进料管(1)的内管(5)引入压力下的气体(8)。 一方面在喷嘴的上部产生过压,一方面是在侧向孔(6)下方的压力(3)下降低液体(9)的高度,另一方面 ,以防止固体,液体和/或气体从注入压力(3)的液体的介质中回流。 朝向喷嘴的内侧。
    • 9. 发明授权
    • Multistage method for manufacturing polyolefins
    • 制造聚烯烃的多级方法
    • US06326442B1
    • 2001-12-04
    • US09570946
    • 2000-05-15
    • Russell John KovealJames John McAlpinJeffrey Lawrence Brinen
    • Russell John KovealJames John McAlpinJeffrey Lawrence Brinen
    • C08F201
    • B01J19/245B01J2219/00114B01J2219/0013B01J2219/00162B01J2219/00182C08F10/00C08F2/001
    • The present invention provides a method for substantially continuously polymerizing olefins comprising: introducing into a first reaction zone a fresh olefin polymerization catalyst; contacting said fresh olefin polymerization catalyst in said first reaction zone with a first vent mixture at a first feed rate and under conditions sufficient to form and avoid melting a polyolefin, wherein first vent mixture comprises unreacted olefins and a diluent vented from a second reaction zone; withdrawing a vent product of unreacted olefins and diluent from said first reaction zone; withdrawing from said first reaction zone a first product mixture comprising said catalyst and said polyolefin; passing said first product mixture to said second reaction zone; contacting said first product mixture in said second reaction zone with a second vent mixture at a second feed rate and under conditions sufficient to form and avoid melting said polyolefin, wherein said second vent mixture comprises a material selected from the group consisting of a fresh feed and a mixture comprising unreacted olefins and diluent from a third reaction zone; and, withdrawing from said second reaction zone a second product mixture comprising said catalyst and said polyolefin.
    • 本发明提供了一种基本上连续聚合烯烃的方法,包括:将新鲜的烯烃聚合催化剂引入第一反应区; 在第一进料速率和足以形成和避免熔化聚烯烃的条件下使所述第一反应区中的所述新鲜烯烃聚合催化剂与第一排气混合物接触,其中第一排气混合物包含未反应的烯烃和从第二反应区排出的稀释剂; 从所述第一反应区抽出未反应的烯烃和稀释剂的排放产物; 从所述第一反应区抽出含有所述催化剂和所述聚烯烃的第一产物混合物; 将所述第一产物混合物通入所述第二反应区; 使所述第二反应区中的所述第一产物混合物与第二排气混合物以第二进料速率和足以形成和避免熔化所述聚烯烃的条件接触,其中所述第二排气混合物包含选自新鲜进料和 包含来自第三反应区的未反应烯烃和稀释剂的混合物; 并且从所述第二反应区抽出包含所述催化剂和所述聚烯烃的第二产物混合物。