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    • 2. 发明申请
    • Process for the Gas-Phase Polymerization Olefins
    • 气相聚合烯烃方法
    • US20080312388A1
    • 2008-12-18
    • US11665210
    • 2005-09-19
    • Gabriele MeiMassimo CovezziStefano Bertolini
    • Gabriele MeiMassimo CovezziStefano Bertolini
    • C08F2/01C08F2/34
    • C08F10/00C08F110/06C08F210/06Y10S526/904Y10S526/919C08F2/01C08F4/651C08F4/6492C08F2/001C08F2/34C08F2500/24C08F210/16
    • Process for the gas-phase polymerization of one or more alpha-olefins in the presence of a catalyst system, the process comprising: contacting in a continuous way one or more of said alpha-olefins with said catalyst system in a prepolymerization reactor, wherein the reaction is carried out in a liquid medium at a temperature ranging from 23° to 50° C.; feeding in continuous the prepolymer obtained in step a) into a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into said riser; wherein the prepolymer obtained from step a) is continuously fed at a section of said riser characterized by an upwardly gas velocity higher than 3.0 m/s.
    • 一种或多种α-烯烃在催化剂体系存在下进行气相聚合的方法,该方法包括:在预聚合反应器中以连续的方式使一种或多种所述α-烯烃与所述催化剂体系接触,其中, 反应在液体介质中在23℃至50℃的温度下进行; 在步骤a)中获得的预聚物连续进料到具有互连聚合区的气相反应器中,其中生长的聚合物颗粒在快速流化或运输条件下通过第一聚合区(提升管)向上流动,离开所述提升管并进入第二个 聚合区(降液管)通过它们在重力作用下向下流动,离开所述降液管并重新引入所述提升管中; 其中从步骤a)获得的预聚物在所述提升管的部分连续进料,其特征在于高于3.0m / s的向上气体速度。
    • 3. 发明授权
    • Process for the gas-phase polymerization olefins
    • 气相聚合烯烃的方法
    • US07652108B2
    • 2010-01-26
    • US11665210
    • 2005-09-19
    • Gabriele MeiMassimo CovezziStefano Bertolini
    • Gabriele MeiMassimo CovezziStefano Bertolini
    • C08F2/34C08F10/02
    • C08F10/00C08F110/06C08F210/06Y10S526/904Y10S526/919C08F2/01C08F4/651C08F4/6492C08F2/001C08F2/34C08F2500/24C08F210/16
    • Process for the gas-phase polymerization of one or more alpha-olefins in the presence of a catalyst system, the process comprising: contacting in a continuous way one or more of said alpha-olefins with said catalyst system in a prepolymerization reactor, wherein the reaction is carried out in a liquid medium at a temperature ranging from 23° to 50° C.; feeding in continuous the prepolymer obtained in step a) into a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into said riser; wherein the prepolymer obtained from step a) is continuously fed at a section of said riser characterized by an upwardly gas velocity higher than 3.0 m/s.
    • 一种或多种α-烯烃在催化剂体系存在下进行气相聚合的方法,该方法包括:在预聚合反应器中以连续的方式使一种或多种所述α-烯烃与所述催化剂体系接触,其中, 反应在液体介质中在23℃至50℃的温度下进行; 在步骤a)中获得的预聚物连续进料到具有互连聚合区的气相反应器中,其中生长的聚合物颗粒在快速流化或运输条件下通过第一聚合区(提升管)向上流动,离开所述提升管并进入第二个 聚合区(降液管)通过它们在重力作用下向下流动,离开所述降液管并重新引入所述提升管中; 其中从步骤a)获得的预聚物在所述提升管的部分连续进料,其特征在于高于3.0m / s的向上气体速度。