Gas phase fluidized bed method and ethylene homo- and copolymers obtained using said method
    2.
    发明授权
    Gas phase fluidized bed method and ethylene homo- and copolymers obtained using said method 有权
    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

    公开(公告)号:US06649709B1

    公开(公告)日:2003-11-18

    申请号:US09555594

    申请日:2000-05-31

    IPC分类号: C08F234

    CPC分类号: C08F10/02 C08F4/24 C08F2/34

    摘要: 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.

    摘要翻译: 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。

    Gaseous phase fluidized-bed reactor
    3.
    发明授权
    Gaseous phase fluidized-bed reactor 失效
    气相流化床反应器

    公开(公告)号:US07601303B1

    公开(公告)日:2009-10-13

    申请号:US09700367

    申请日:1999-05-04

    IPC分类号: B01J8/18

    摘要: Gas-phase fluidized-bed reactor for polymerizing ethylenically unsaturated monomers, comprising a reactor chamber (1) in the form of a vertical tube, if desired a calming zone (2) following the upper section of the reactor chamber, a circulation gas line (3), a circulation gas compressor (4) and a cooling device (5), where, in the region of transition of the reaction gas from the circulation gas line into the reactor chamber and in the lower section of the reactor chamber itself, there is either no gas distributor plate at all or only a gas distributor plate the total surface area of whose gas orifices is more than 20% of the total surface area of said gas distributor plate.

    摘要翻译: 用于聚合烯键式不饱和单体的气相流化床反应器,包括垂直管形式的反应器室(1),如果需要,在反应器室的上部之后的平静区域(2),循环气体管线 3),循环气体压缩机(4)和冷却装置(5),其中在反应气体从循环气体管线进入反应器室和反应器室本身的下部的过渡区域 完全不是气体分配器板,或者只有气体分配器板,其气体孔的总表面积大于所述气体分布板的总表面积的20%。

    Gaseous phase fluidized-bed reactor
    4.
    发明授权
    Gaseous phase fluidized-bed reactor 失效
    气相流化床反应器

    公开(公告)号:US08034884B2

    公开(公告)日:2011-10-11

    申请号:US12554964

    申请日:2009-09-07

    IPC分类号: C08F2/00 B01J8/18

    摘要: Gas-phase fluidized-bed reactor for polymerizing ethylenically unsaturated monomers, comprising a reactor chamber (1) in the form of a vertical tube, if desired a calming zone (2) following the upper section of the reactor chamber, a circulation gas line (3), a circulation gas compressor (4) and a cooling device (5), where, in the region of transition of the reaction gas from the circulation gas line into the reactor chamber and in the lower section of the reactor chamber itself, there is either no gas distributor plate at all or only a gas distributor plate the total surface area of whose gas orifices is more than 20% of the total surface area of said gas distributor plate.

    摘要翻译: 用于聚合烯键式不饱和单体的气相流化床反应器,包括垂直管形式的反应器室(1),如果需要,在反应器室的上部之后的平静区域(2),循环气体管线 3),循环气体压缩机(4)和冷却装置(5),其中在反应气体从循环气体管线进入反应器室和反应器室本身的下部的过渡区域 完全不是气体分配器板,或者只有气体分配器板,其气体孔的总表面积大于所述气体分布板的总表面积的20%。

    Vapor-phase fluidized-bed process and ethylene homopolymers and copolymers produced thereby
    5.
    发明授权
    Vapor-phase fluidized-bed process and ethylene homopolymers and copolymers produced thereby 失效
    气相流化床方法和由此制备的乙烯均聚物和共聚物

    公开(公告)号:US06849699B2

    公开(公告)日:2005-02-01

    申请号:US10658916

    申请日:2003-09-11

    CPC分类号: C08F10/02 C08F4/24 C08F2/34

    摘要: 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.

    摘要翻译: 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。

    Discontinuous metering of catalysts and process auxilliaries into a gas-phase fluidized-bed reactor
    7.
    发明授权
    Discontinuous metering of catalysts and process auxilliaries into a gas-phase fluidized-bed reactor 失效
    催化剂和工艺助剂不连续计量进入气相流化床反应器

    公开(公告)号:US07534341B2

    公开(公告)日:2009-05-19

    申请号:US10552853

    申请日:2004-04-15

    IPC分类号: C10G35/00 C10G35/10

    摘要: Method of metering at least one solid, particulate catalyst into a reactor containing a fluidized bed (11) of particles in an at least partly gaseous medium, in which the catalyst is metered discontinuously at prescribed time intervals into the fluidized bed (11) at at least one metering point (10). According to the present invention, a fluid stream is firstly introduced into the reactor (5) so that a region having a reduced particle density is formed in the fluidized bed (11) around the metering point (10) and the catalyst is subsequently metered into this region. As a result of the prior introduction of a fluid stream (“preblowing”) before the actual introduction of the catalyst, the catalyst can penetrate significantly deeper into the fluidized bed from the metering point due to the reduced particle density and is dispersed better.

    摘要翻译: 将至少一种固体颗粒催化剂计量到含有至少部分气体介质中的颗粒流化床(11)的反应器的方法,其中催化剂以规定的时间间隔不连续地计量加入流化床(11)中 至少一个计量点(10)。 根据本发明,首先将流体流引入反应器(5),使得在流化床(11)周围形成具有减小的颗粒密度的区域,并将催化剂随后计量加入 这个地区。 由于在实际引入催化剂之前先前引入流体物流(“预吹扫”),由于颗粒密度降低,催化剂可以从计量点深入到流化床中,并且分散得更好。

    Discontinuous metering of catalysts and process auxiliaries into a gas-phase fluidized-bed reactor
    8.
    发明申请
    Discontinuous metering of catalysts and process auxiliaries into a gas-phase fluidized-bed reactor 失效
    催化剂和工艺助剂不连续计量进入气相流化床反应器

    公开(公告)号:US20070037935A1

    公开(公告)日:2007-02-15

    申请号:US10552853

    申请日:2004-04-15

    IPC分类号: C08G85/00 B32B27/04

    摘要: Method of metering at least one solid, particulate catalyst into a reactor containing a fluidized bed (11) of particles in an at least partly gaseous medium, in which the catalyst is metered discontinuously at prescribed time intervals into the fluidized bed (11) at at least one metering point (10). According to the present invention, a fluid stream is firstly introduced into the reactor (5) so that a region having a reduced particle density is formed in the fluidized bed (11) around the metering point (10) and the catalyst is subsequently metered into this region. As a result of the prior introduction of a fluid stream (“preblowing”) before the actual introduction of the catalyst, the catalyst can penetrate significantly deeper into the fluidized bed from the metering point due to the reduced particle density and is dispersed better.

    摘要翻译: 将至少一种固体颗粒催化剂计量到含有至少部分气体介质中的颗粒流化床(11)的反应器的方法,其中催化剂以规定的时间间隔不连续地计量加入流化床(11)中 至少一个计量点(10)。 根据本发明,首先将流体流引入反应器(5),使得在流化床(11)周围形成具有减小的颗粒密度的区域,并将催化剂随后计量加入 这个地区。 由于在实际引入催化剂之前先前引入流体物流(“预吹扫”),由于颗粒密度降低,催化剂可以从计量点深入到流化床中,并且分散得更好。

    Apparatus for the gas-phase polymerization of olefins, in particular ethylene
    10.
    发明授权
    Apparatus for the gas-phase polymerization of olefins, in particular ethylene 有权
    用于烯烃气相聚合的装置,特别是乙烯

    公开(公告)号:US07781544B2

    公开(公告)日:2010-08-24

    申请号:US11667349

    申请日:2005-11-09

    IPC分类号: C08F2/00 F27B15/08

    摘要: An apparatus for the polymerization of olefins, in particular ethylene, comprising a gas-phase fluidized-bed reactor (1), a recycle gas line (2) connected to the reactor for discharging and recirculating the recycle gas stream comprising the unpolymerized olefin and a cyclone (3) located in the recycle gas line for the reduction and precipitation of the solid particles entrained in the recycle gas from the reactor, with the cyclone comprising an upper section (3a) which has an essentially vertical central axis, whose wall extends along a rotationally symmetric body and which is provided with a cyclone inlet (4) arranged eccentrically relative to the central axis, a middle section (3b) which adjoins the upper section (3a) and whose wall extends along a rotationally symmetric body which tapers in a downward direction, a lower section (3c) for discharging the solid particles precipitated from the recycle gas which adjoins the middle section (3b) and whose wall extends along a rotationally symmetric body and a tube (5) extending essentially axially symmetrically down into the upper section and, if appropriate, the middle section for discharging the recycle gas which has been freed of the particles. According to the invention the ratio Hi of the distance hi from the lower end of the tube (5) extending downward into the cyclone to the intersection (6) of an imaginary extension of the wall of the downward-extending tube (5) with the wall of the middle section (3b) to the diameter di of the downward-extending tube (5) is from 3 to 8, in particular from 4 to 7.

    摘要翻译: 用于烯烃聚合的装置,特别是乙烯,包括气相流化床反应器(1),连接到反应器的再循环气体管线(2),用于排出和再循环包含未聚合烯烃的循环气流和 旋风分离器(3)位于循环气体管线中,用于还原和沉淀夹带在来自反应器的再循环气体中的固体颗粒,其中旋风分离器包括具有基本垂直的中心轴线的上部分(3a),其上壁沿着 旋转对称体,并且设置有相对于中心轴偏心布置的旋风入口(4),邻接上部(3a)的中间部分(3b),并且其壁沿着旋转对称的体 用于排出邻近中间部分(3b)的循环气体沉淀的固体颗粒的下部(3c),并且其壁沿旋转方向延伸 对称体和管(5),其基本上轴向对称地延伸到上部,并且如果适当的话,中间部分用于排出已经没有颗粒的循环气体。 根据本发明,从管(5)的下端向下延伸到旋风分离器中的距离hi的距离hi与向下延伸的管(5)的壁的假想延伸部的交点(6) 中间部分(3b)的壁向下延伸管(5)的直径di为3至8,特别是4至7。