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    • 9. 发明申请
    • Polymerization Process for Preparing Polyolefins
    • 制备聚烯烃的聚合方法
    • US20090234083A1
    • 2009-09-17
    • US11989384
    • 2006-07-18
    • Daniele BigiaviGiuseppe Penzo
    • Daniele BigiaviGiuseppe Penzo
    • C08F2/04
    • C08F10/00C08F110/08C08F2/06
    • A solution process for polymerizing one or more α-olefins of formula CH2═CHR, where R is H or an alkyl radical C1-12, to produce a polymer that is soluble in the reaction medium, the process comprising: (a) polymerization in a solution phase of one or more α-olefins in the presence of an organo-aluminum compound and a catalyst system comprising a transition metal compound as the catalyst component; (b) the polymeric solution obtained from step a) is then pressurized and transferred by means of a screw pump to a successive step for removing the unreacted monomers from the polymer; wherein the pumping capacity of said screw pump is kept constant by adding the polymeric solution with water at a feeding point upstream the screw pump.
    • 用于聚合一种或多种式CH 2 -CHR的α-烯烃(其中R是H或烷基C1-12)以产生可溶于反应介质的聚合物的溶液方法,该方法包括:(a) 在有机铝化合物存在下的一种或多种α-烯烃的溶液相和包含过渡金属化合物作为催化剂组分的催化剂体系; (b)然后通过螺杆泵将从步骤a)获得的聚合物溶液加压并转移到从聚合物中除去未反应单体的连续步骤; 其中所述螺杆泵的泵送能力通过在螺杆泵上游的进料点处加入聚合物溶液而保持恒定。
    • 10. 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。