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    • 45. 发明申请
    • Process and Apparatus For the Polymerization of Ethylene
    • 用于聚合乙烯的方法和装置
    • US20080177012A1
    • 2008-07-24
    • US11883713
    • 2006-01-30
    • Giuseppe PenzoCyrus Ahmadzade-YoussefiRainer KarerUlrich Nieken
    • Giuseppe PenzoCyrus Ahmadzade-YoussefiRainer KarerUlrich Nieken
    • C08F2/34B01J8/00
    • C08F10/02B01J8/0035B01J8/006B01J8/24B01J2208/00274B01J2208/00761B01J2219/00006C08F6/005C08F10/00C08F110/02C08F210/16Y02P20/582Y10S526/92C08L23/06C08L23/0815C08F4/69C08F2/34C08F2/01C08F210/08C08F210/14
    • Process for the polymerization of ethylene or of ethylene with further 1-olefins, in which the ethylene is polymerized in the presence of a catalyst in a gas-phase reactor and reaction gas comprising propane and unpolymerized ethylene is circulated to remove the heat of polymerization, wherein the polymer particles are discharged continuously or discontinuously from the reactor, the polymer particles are separated from the major part of the concomitantly discharged gas and the polymer particles are degassed, the gas is freed of entrained fine particles and is separated from a low-boiling fraction comprising ethylene or from a high boiling fraction containing further 1-olefins or alkanes having from 4 to 12 carbon atoms in a first separation stage, a propane fraction is separated off in a second separation stage and this propane fraction is used for degassing the polymer particles discharged from the reactor, with the proportion of ethylene in the propane fraction being less than 1 mol % and the proportion of 1-olefins and alkanes having from 4 to 12 carbon atoms in the propane fraction being less than 4 mol %, in each case based on the total propane fraction. Furthermore, an apparatus for carrying out the process. In this way, a high heat discharge from the reactor, satisfactory degassing of the discharged polymer particles and recovery of the reaction gas discharged together with the polymer particles and also the gas used for degassing the polymer particles are made possible.
    • 乙烯或乙烯与进一步的1-烯烃聚合的方法,其中乙烯在催化剂存在下在气相反应器和包含丙烷和未聚合乙烯的反应气体中聚合循环以除去聚合热, 其中聚合物颗粒从反应器中连续或不连续地排出,聚合物颗粒与伴随排出气体的主要部分分离,聚合物颗粒脱气,气体不含夹带的细颗粒,并从低沸点 在第一分离阶段,包含乙烯或含有另外的具有4至12个碳原子的1-烯烃或烷烃的高沸点馏分的馏分在第二分离阶段分离出丙烷馏分,该丙烷馏分用于使聚合物脱气 从反应器排出的颗粒,丙烷馏分中乙烯的比例小于1mol %,丙烷馏分中具有4至12个碳原子的1-烯烃和烷烃的比例小于4mol%,基于总丙烷馏分。 此外,一种用于执行该过程的装置。 以这种方式,可以从反应器的高热放电,排出的聚合物颗粒的令人满意的脱气和与聚合物颗粒一起排放的反应气体的回收以及用于使聚合物颗粒脱气的气体成为可能。
    • 46. 发明申请
    • Apparatus and Process for the Gas-Phase Polymerization of Olefins
    • 用于烯烃气相聚合的装置和方法
    • US20080014128A1
    • 2008-01-17
    • US11667417
    • 2005-11-08
    • Eberhard HerrmannManfred HeckerRainer KarerKlaus BerhalterPaulus de LangeJorg HalpapCyrus Ahmadzade-Youssefi
    • Eberhard HerrmannManfred HeckerRainer KarerKlaus BerhalterPaulus de LangeJorg HalpapCyrus Ahmadzade-Youssefi
    • C08F10/00B01J19/18
    • B01J8/003B01J8/006B01J8/1872B01J2208/00256B01J2208/00274B01J2208/00761C08F10/00C08F110/02C08F2/34
    • Apparatus for the polymerization of olefins, in particular ethylene, comprising a gas-phase fluidized-bed reactor (1), a product offtake line (15) for taking polymer particles either continuously or discontinuously from the reactor (1), which line (15) is connected to a depressurization vessel (2) for separating polymer particles and gas, a recycle gas filter (3) for freeing the gas of entrained fine particles connected to the depressurization vessel (2), a compressor which compresses the gas which has been freed of fine particles and recirculates it into the reactor (1), with the recycle gas filter (3) having an inlet chamber (4) provided with a gas inlet (6), an outlet chamber (5) provided with a gas outlet (7), an essentially vertical sheet-like filter medium (9) for retaining the fine particles which separates the inlet chamber (4) from the outlet chamber (5) and a particle outlet (8). The inlet chamber (4) has a dividing wall (10) which is arranged essentially parallel to the filter medium (9) and separates the inlet chamber (4) into an inflow region (4a), which is connected to the gas inlet (6), and a filter region (4b) in which the filter medium is located and has an upper opening and a lower opening which are dimensioned so that from 60 to 90% of the volume flow flows through the upper opening so that flow along the filter medium (9) from the top downward results.
    • 用于烯烃聚合的设备,特别是乙烯,包括气相流化床反应器(1),用于从反应器(1)连续或不连续地获取聚合物颗粒的出口管线(15),该管线(15) )连接到用于分离聚合物颗粒和气体的减压容器(2),用于释放连接到减压容器(2)的夹带的细颗粒的气体的循环气体过滤器(3),压缩已经被 释放细颗粒并将其再循环到反应器(1)中,循环气体过滤器(3)具有设置有气体入口(6)的入口室(4),设置有气体出口的出口室(5) 7),用于保持将入口室(4)与出口室(5)分离的细颗粒和颗粒出口(8)的基本垂直的片状过滤介质(9)。 入口室(4)具有基本上与过滤介质(9)平行布置的分隔壁(10),并将入口室(4)分离成入口区域(4a),该入口区域连接到气体入口 6)和过滤器区域(4b),其中过滤介质位于并具有上开口和下开口,其尺寸使得体积流量的60%至90%流过上开口,使得沿着 过滤介质(9)从顶部向下的结果。