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    • 2. 发明授权
    • Gas phase fluidized bed method and ethylene homo- and copolymers obtained using said method
    • 气相流化床法和使用所述方法获得的乙烯均聚物和共聚物
    • US06649709B1
    • 2003-11-18
    • US09555594
    • 2000-05-31
    • Peter BauerArmin LangeRainer KarerPhilipp RosendorferManfred HeckerGünther SchweierWolfgang MicklitzKaspar EvertzHans-Jacob Feindt
    • Peter BauerArmin LangeRainer KarerPhilipp RosendorferManfred HeckerGünther SchweierWolfgang MicklitzKaspar EvertzHans-Jacob Feindt
    • C08F234
    • C08F10/02C08F4/24C08F2/34
    • A continuous vapor-phase fluidized-bed process for the preparation of ethylene homopolymers and copolymers having a density of from 0.87 to 0.97 g/cm3 in which ethylene or mixtures of ethylene and C3-C8 a-monoolefins are (co)polymerized in the presence of a supported chromium catalyst in the polymerization zone of a vapor-phase fluidized-bed reactor under pressures ranging from 1 to 100 bar and at temperatures ranging from 30° to 125° C. in the vapor phase in an agitated bed of bulk material comprising particulate polymer, the resultant heat of polymerization is removed by cooling the recirculated reactor gas and the resulting (co)polymer is removed from the vapor-phase fluidized-bed reactor, wherein, for the preparation of a (co)polymer of a specific density d, the (co)polymerization is carried out at a temperature which is in a range restricted by an upper envelope defined by equation I T H = 171 + 6 ⁢ d ′ 0.84 - d ′ ( I ) and a lower envelope defined by equation II T L = 173 + 7.3 ⁢ d ′ 0.837 - d ′ , ( II ) in which the variables have the following meanings: TH is the highest reaction temperature in ° C.; TL is the lowest reaction temperature in ° C.; d′ is the numerical value of the density d of the (co)polymer to be synthesized.
    • 用于制备密度为0.87至0.97g / cm 3的乙烯均聚物和共聚物的连续气相流化床方法,其中乙烯或乙烯和C 3 -C 8α-单烯烃的混合物(共)聚合 在负载的铬催化剂的存在下,在气相流化床反应器的聚合区域的存在下,在压力范围为1至100巴,温度范围为30至125℃,气相在搅拌床 包含颗粒聚合物的散装材料,通过冷却再循环的反应器气体除去所得到的聚合热,并将所得(共)聚合物从气相流化床反应器中除去,其中,为制备(共)聚合物 特定密度d,(共)聚合在由等式I定义的上包络限制的范围内进行,并且由等式IIin定义的下包络,其中变量具有以下含义:T H是最高的反应温度,单位°C; TL是最低反应温度(℃); d'是待合成的(共)聚合物的密度d的数值。
    • 3. 发明授权
    • Vapor-phase fluidized-bed process and ethylene homopolymers and copolymers produced thereby
    • 气相流化床方法和由此制备的乙烯均聚物和共聚物
    • US06849699B2
    • 2005-02-01
    • US10658916
    • 2003-09-11
    • Peter BauerArmin LangeRainer KarerPhilipp RosendorferManfred HeckerGünther SchweierWolfgang MicklitzKaspar EvertzHans-Jacob Feindt
    • Peter BauerArmin LangeRainer KarerPhilipp RosendorferManfred HeckerGünther SchweierWolfgang MicklitzKaspar EvertzHans-Jacob Feindt
    • C08J5/18C08F2/34C08F4/02C08F4/24C08F4/69C08F10/02C08F210/02
    • C08F10/02C08F4/24C08F2/34
    • A continuous vapor-phase fluidized-bed process for the preparation of ethylene homopolymers and copolymers having a density of from 0.87 to 0.97 g/cm3 in which ethylene or mixtures of ethylene and C3-C8 a-monoolefins are (co)polymerized in the presence of a supported chromium catalyst in the polymerization zone of a vapor-phase fluidized-bed reactor under pressures ranging from 1 to 100 bar and at temperatures ranging from 30° to 125° C. in the vapor phase in an agitated bed of bulk material comprising particulate polymer, the resultant heat of polymerization is removed by cooling the recirculated reactor gas and the resulting (co)polymer is removed from the vapor-phase fluidized-bed reactor, wherein, for the preparation of a (co)polymer of a specific density d, the (co)polymerization is carried out at a temperature which is in a range restricted by an upper envelope defined by equation I T H = 171 + 6 ⁢   ⁢ d ′ 0.84 - d ′ ( I ) and a lower envelope defined by equation II T L = 173 + 7.3 ⁢   ⁢ d ′ 0.837 - d ′ , ( II ) in which the variables have the following meanings: TH is the highest reaction temperature in ° C.; TL is the lowest reaction temperature in ° C.; d′ is the numerical value of the density d of the (co)polymer to be synthesized.
    • 用于制备密度为0.87至0.97g / cm 3的乙烯均聚物和共聚物的连续气相流化床方法,其中乙烯或乙烯和C 3 -C 8α-单烯烃的混合物(共)聚合 在负载的铬催化剂的存在下,在气相流化床反应器的聚合区域的存在下,在压力范围为1至100巴,温度范围为30至125℃,气相在搅拌床 包含颗粒聚合物的散装材料,通过冷却再循环的反应器气体除去所得到的聚合热,并将所得(共)聚合物从气相流化床反应器中除去,其中,为制备(共)聚合物 特定密度d,(共)聚合在由等式I定义的上包络限制的范围内进行,并且由等式IIin定义的下包络,其中变量具有以下含义:T H是最高的反应温度,单位°C; TL是最低反应温度(℃); d'是待合成的(共)聚合物的密度d的数值。
    • 10. 发明授权
    • Method for isolating olefins from polyolefin plants
    • 从聚烯烃工厂中分离烯烃的方法
    • US06462150B1
    • 2002-10-08
    • US09913074
    • 2001-08-09
    • Stefan BitterlichKaspar EvertzManfred HeckerHans-Jacob Feindt
    • Stefan BitterlichKaspar EvertzManfred HeckerHans-Jacob Feindt
    • C08F234
    • C08F6/001B01J8/007B01J8/24C07C7/005C07C11/02
    • The present invention relates to a method for the isolation of olefins from a gas mixture comprising one or more olefins, inert gas and catalyst poison, where the gas mixture is fed to a separation unit (18) and separated into olefin and inert gas. The method according to the invention has the special feature that an apparatus (17) is installed upstream or downstream of the separation unit (18) and that i) in the case of an upstream apparatus (17), the catalyst poison is at least partially removed from the gas mixture, and ii) in the case of a downstream apparatus (17), the catalyst poison is at least partially removed from the separated-off olefin. The olefins here are preferably isolated from a gas mixture formed as offgas in catalytic gas-phase polymerization for the preparation of polyolefins. The recovery of the olefins from the offgas is of economic importance.
    • 本发明涉及从包含一种或多种烯烃,惰性气体和催化剂毒物的气体混合物中分离烯烃的方法,其中气体混合物被供给到分离单元(18)并分离成烯烃和惰性气体。 根据本发明的方法具有以下特征:设备(17)安装在分离单元(18)的上游或下游,并且在上游设备(17)的情况下,催化剂毒物至少部分地被去除 在下游装置(17)的情况下,催化剂毒物至少部分地从分离的烯烃中除去。这里的烯烃优选与催化气体 - 气体中的废气形成的气体混合物分离, 用于制备聚烯烃的相聚合。 从废气中回收烯烃是经济重要的。