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    • 2. 发明申请
    • MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    • 烯烃聚合的多种方法
    • WO2013083548A3
    • 2013-08-22
    • PCT/EP2012074324
    • 2012-12-04
    • BASELL POLYOLEFINE GMBH
    • COVEZZI MASSIMOPENZO GIUSEPPEMEI GABRIELEMEI GIULIABAITA PIETROMEIER GERHARDUSDE LUCIA ANTONIOSCHUELLER ULFFERRARO GIANPIERO
    • C08F10/00C08F2/00C08F2/34
    • C08F110/02C08F2/001C08F2/34C08F10/00C08F10/02C08F2500/12C08F2500/18C08F2500/24C08F2/00C08F2/01
    • Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.
    • 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法,其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管,其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床,该方法包括以下步骤:引入 流入沉降管中的流体,其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中,用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法,在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。
    • 5. 发明申请
    • MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    • 烯烃聚合的多种方法
    • WO2014184152A3
    • 2014-12-31
    • PCT/EP2014059680
    • 2014-05-13
    • BASELL POLYOLEFINE GMBH
    • PENZO GIUSEPPEMEI GABRIELEMEIER GERHARDUSSCHUELLER ULFCIARROCCHI ANTONIO
    • C08F210/00C08F2/00C08F2/34
    • C08F110/02B01J8/0025B01J8/1863B01J8/1872B01J8/26B01J19/245B01J2208/00274B01J2208/00292B01J2208/00557B01J2208/00752B01J2208/00761B01J2208/00769B01J2208/00991B01J2219/24C08F10/00C08F2/001C08F2/34C08F2/01C08F2500/12C08F2500/07C08F2500/24C08F2500/18
    • A process for polymerizing olefins at temperatures of from 30°C to 140°C and pressures of from 1.0 MPa to 10 MPa in the presence of a polymerization catalyst in a multistage polymerization of olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of a) discharging polyolefin particles from the first gas-phase polymerization reactor into a separation chamber in which the polyolefin particles are separated from concomitantly discharged reaction gas, the separation chamber being at a lower pressure than the pressure in the first gas-phase polymerization reactor; b) transferring the polyolefin particles within the separation chamber into a lower part of the separation chamber which contains a bed of polyolefin particles which moves from top to bottom of this part of the separation chamber and into which a fluid is introduced in an amount that an upward stream of the fluid in the bed of polyolefin particles above the fluid introduction point is induced, c) withdrawing polyolefin particles from the lower end of said lower part and transferring them to one of at least two lock hoppers working intermittently in parallel; and d) simultaneously pressurizing another of the at least two lock hoppers working intermittently by means of a gas comprising reaction gas coming from the second gas-phase polymerization reactor, and apparatus for the multistage polymerization of olefins, comprising at least two serially connected gas-phase polymerization reactors and a device for transferring polyolefin particles from an up-stream gas-phase polymerization reactor to a downstream gas-phase polymerization reactor, the transferring device comprising - a gas/solid separation chamber placed downstream of the upstream gas-phase polymerization which gas/solid separation chamber is equipped at a lower part with an inlet for introducing a fluid, and - connected to the gas/solid separation chamber at least two lock hoppers, placed in a parallel arrangement, each connected to the downstream gas-phase polymerization reactor.
    • 一种在至少两个串联连接的气相聚合反应器中的烯烃多段聚合中,在聚合催化剂存在下,在30℃至140℃的温度和1.0MPa至10MPa的压力下使烯烃聚合的方法, 将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法,包括以下步骤:a)将聚烯烃颗粒从第一气相聚合反应器排出到其中分离聚烯烃颗粒的分离室 从同时排出的反应气体,分离室的压力低于第一气相聚合反应器中的压力; b)将分离室内的聚烯烃颗粒转移到分离室的下部,该下部包含聚烯烃颗粒床,该聚烯烃颗粒床从该分离室的该部分的顶部向底部移动,并且其中导入流体的量为 诱导在流体引入点上方的聚烯烃颗粒床中的流体向上流,c)从所述下部的下端抽出聚烯烃颗粒并将它们转移到平行间歇地工作的至少两个锁定料斗之一; 以及d)通过包含来自第二气相聚合反应器的反应气体的气体和用于烯烃多段聚合的装置,间歇地工作的至少两个锁定料斗中的另一个同时加压,包括至少两个串联连接的气 - 相转移反应器和用于将聚烯烃颗粒从上游气相聚合反应器转移到下游气相聚合反应器的装置,所述转移装置包括 - 放置在上游气相聚合下游的气/固分离室, 气体/固体分离室在下部配备有用于引入流体的入口,并且连接到气/固分离室至少两个以平行排列的锁定料斗,每个连接料斗连接到下游气相聚合 反应堆。