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    • 5. 发明申请
    • Olefin Oligomerization
    • 烯烃低聚
    • US20090270567A1
    • 2009-10-29
    • US12480384
    • 2009-06-08
    • Brooke L. SmallBruce E. Kreischer
    • Brooke L. SmallBruce E. Kreischer
    • C08F2/01C08F4/42C08F4/52
    • C07C2/32C07C2531/28C07C2531/30C07C11/02
    • Provided is a method of oligomerizing alpha olefins. In an embodiment, an oligomerization catalyst system is contacted in at least one continuous reactor with a feed comprising olefins; an effluent comprising product olefins having at least four carbon atoms is withdrawn from the reactor; the oligomerization catalyst system comprises iron or cobalt, or combinations thereof; and the single pass conversion of ethylene is at least about 40 weight percent among product olefins having at least four carbon atoms. In another embodiment, the single pass conversion of ethylene comprises at least about 65 weight percent among product olefins having at least four carbon atoms. In another embodiment, product olefins of the effluent having twelve carbon atoms comprise at least about 95 weight percent 1-dodecene. In another embodiment, product olefins comprise at least about 80 weight percent linear 1-alkenes. In another embodiment, product olefins comprise at least about 20 weight percent alpha olefins having from about 8 to about 20 carbon atoms. In another embodiment, the oligomerization catalyst system provided comprises a selective 1-hexene (S1H) catalyst.
    • 提供了一种使α-烯烃低聚的方法。 在一个实施方案中,低聚催化剂体系在至少一个连续反应器中与包含烯烃的进料接触; 含有至少四个碳原子的产物烯烃的流出物从反应器中排出; 所述低聚催化剂体系包含铁或钴,或其组合; 并且在具有至少四个碳原子的产物烯烃中乙烯的单程转化率至少为约40重量%。 在另一个实施方案中,乙烯的单程转化在具有至少四个碳原子的产物烯烃中包含至少约65重量%。 在另一个实施方案中,具有十二个碳原子的流出物的产物烯烃包含至少约95重量%的1-十二碳烯。 在另一个实施方案中,产物烯烃包含至少约80重量%的直链1-烯烃。 在另一个实施方案中,产物烯烃包含至少约20重量%的具有约8至约20个碳原子的α-烯烃。 在另一个实施方案中,提供的低聚催化剂体系包括选择性1-己烯(S1H)催化剂。
    • 6. 发明授权
    • Process and apparatus for recovering diluent, monomer, and comonomer
from a polymerization reactor effluent
    • 用于从聚合反应器流出物回收稀释剂,单体和共聚单体的方法和设备
    • US6045661A
    • 2000-04-04
    • US82398
    • 1998-05-20
    • Bruce E. KreischerDonald W. VerserJames E. Hein
    • Bruce E. KreischerDonald W. VerserJames E. Hein
    • B01D3/06B01D3/14C08F6/00
    • C08F6/003B01D3/06B01D3/146
    • A process and apparatus are provided for recovering diluent, unreacted monomer, and unreacted comonomer from a polymerization reactor effluent. The comonomer has a boiling point higher than the boiling point of the monomer and the diluent has a boiling point between the boiling points of the monomer and comonomer. The process and apparatus employ at least one flash tank, a first fractionation stage including a first column and operating at a first fractionation pressure, and a second fraction stage including a second column and operating at a higher second fractionation pressure. Comonomer is withdrawn from the first column as a fractionation product, and overhead vapor containing diluent and monomer is substantially condensed to yield a substantially condensed overhead stream. Liquid and vapor from the stream are separated in an accumulator. Vapor and liquid from the accumulator are compressed and pumped, respectively, for delivery to the second fractionation stage at approximately the second fractionation pressure. The pumped liquid is a major portion by weight of the total flow of pumped liquid and compressed vapor to the second fractionation stage. Diluent and monomer are withdrawn from the second column as fractionation products.
    • 提供了从聚合反应器流出物中回收稀释剂,未反应单体和未反应的共聚单体的方法和装置。 共聚单体的沸点高于单体的沸点,稀释剂的沸点在单体和共聚单体的沸点之间。 该方法和装置使用至少一个闪蒸罐,包括第一塔并在第一分馏压力下操作的第一分馏阶段和包含第二塔并在较高的第二分馏压力下运行的第二馏分级。 共聚单体作为分馏产物从第一塔排出,并且含有稀释剂和单体的塔顶蒸气基本上冷凝以产生基本上冷凝的塔顶馏出物流。 来自流的液体和蒸汽在蓄液器中分离。 来自蓄能器的蒸汽和液体分别被压缩和泵送,以在大约第二分馏压力下输送到第二分馏级。 泵送的液体是泵送液体和压缩蒸气到第二分馏级的总流量的主要部分。 稀释剂和单体作为分馏产物从第二塔排出。