Process for feeding ethylene to polymerization reactors
    2.
    发明授权
    Process for feeding ethylene to polymerization reactors 有权
    将乙烯供给聚合反应器的方法

    公开(公告)号:US08399586B2

    公开(公告)日:2013-03-19

    申请号:US12584338

    申请日:2009-09-03

    摘要: A process for feeding ethylene into a polymerization system includes providing a low-pressure ethylene stream, one or more low-pressure C3 to C20 monomer streams, an optional low-pressure inert solvent/diluent stream, and one or more reactors; metering the low-pressure ethylene stream, the one or more low-pressure C3 to C20 monomer streams, and the optional low-pressure inert solvent/diluent stream; blending the metered low-pressure ethylene stream, the metered one or more low-pressure C3 to C20 monomer streams, and the metered low-pressure optional inert solvent/diluent stream to form an ethylene-carrying low-pressure blended liquid feed stream; pressurizing the ethylene-carrying low-pressure blended liquid feed stream to the polymerization system pressure with one or more high-pressure pumps to thrm an ethylene-carrying high-pressure blended reactor feed stream; and feeding the ethylene-carrying high-pressure blended reactor feed stream to the one or more reactors.

    摘要翻译: 将乙烯进料到聚合体系中的方法包括提供低压乙烯流,一种或多种低压C3至C20单体流,任选的低压惰性溶剂/稀释剂流和一个或多个反应器; 计量低压乙烯流,一个或多个低压C3至C20单体流和任选的低压惰性溶剂/稀释剂流; 混合计量的低压乙烯流,计量的一个或多个低压C3至C20单体流和计量的低压可选惰性溶剂/稀释剂流,以形成携带乙烯的低压混合液体进料流; 使用一个或多个高压泵将携带乙烯的低压混合液体进料流加压至聚合系统压力以加入携带乙烯的高压共混反应器进料流; 并将含乙烯的高压共混反应器进料流输送到一个或多个反应器。

    Monomer recycle process for fluid phase in-line blending of polymers
    3.
    发明授权
    Monomer recycle process for fluid phase in-line blending of polymers 有权
    用于流体相在线共混聚合物的单体循环过程

    公开(公告)号:US08080610B2

    公开(公告)日:2011-12-20

    申请号:US12074496

    申请日:2008-03-04

    IPC分类号: C08F2/04 C08F2/06

    摘要: A monomer recycle process for fluid phase in-line blending of polymers is provided. In one form, the monomer recycle process includes providing a first group (G1) of one or more reactor trains and a second group (G2) of one or more reactor trains and one or more separators fluidly connected to G1 and one separator fluidly connected to G2; polymerizing in each reactor train of G1 and G2 olefin monomers to form homogenous fluid phase polymer-monomer mixtures wherein each of the G1 and G2 reactor trains have at least one common monomer; passing the reactor effluents from the one or more G1 reactor trains through the one or more G1 separators to separate a monomer-rich phase from a polymer-enriched phase; passing the polymer-enriched phase and the reactor effluents from the one or more G2 reactor trains into the G2 separator (separator-blender) to separate another monomer-rich phase from a polymer-rich blend; recycling to one or more G1 reactor trains the separated monomer-rich phase from the one or more G1 separators; and recycling to one or more G2 reactor trains the separated monomer-rich phase from the G2 separator. The polymer-rich blend is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a polymer product blend.

    摘要翻译: 提供了用于聚合物的流体相在线共混的单体再循环方法。 在一种形式中,单体再循环方法包括提供一个或多个反应器列的第一组(G1)和一个或多个反应器列的第二组(G2)和与G1流体连接的一个或多个分离器和一个流体连接到 G2; 在G1和G2烯烃单体的每个反应器序列中聚合以形成均相流体相聚合物 - 单体混合物,其中每个G1和G2反应器列具有至少一个共同的单体; 使来自一个或多个G1反应器列的反应器流出物通过一个或多个G1分离器以将富含单体的相与富集聚合相分离; 将聚合物富集相和反应器流出物从一个或多个G2反应器列车通入G2分离器(分离器 - 共混器)中,以从富含聚合物的共混物中分离另一富含单体的相; 将一个或多个G1反应器再循环到一个或多个G1分离器中,从而分离出富含单体的相。 并循环到一个或多个G2反应器中,从G2分离器中将分离的富含单体的相进行培养。 将富含聚合物的共混物输送到下游整理阶段,以进一步进行单体汽提,干燥和/或造粒以形成聚合物产物混合物。

    Monomer recycle process for fluid phase in-line blending of polymers
    4.
    发明申请
    Monomer recycle process for fluid phase in-line blending of polymers 有权
    用于流体相在线共混聚合物的单体循环过程

    公开(公告)号:US20080281040A1

    公开(公告)日:2008-11-13

    申请号:US12074496

    申请日:2008-03-04

    IPC分类号: C08F2/01

    摘要: A monomer recycle process for fluid phase in-line blending of polymers is provided. In one form, the monomer recycle process includes providing a first group (G1) of one or more reactor trains and a second group (G2) of one or more reactor trains and one or more separators fluidly connected to G1 and one separator fluidly connected to G2; polymerizing in each reactor train of G1 and G2 olefin monomers to form homogenous fluid phase polymer-monomer mixtures wherein each of the G1 and G2 reactor trains have at least one common monomer; passing the reactor effluents from the one or more G1 reactor trains through the one or more G1 separators to separate a monomer-rich phase from a polymer-enriched phase; passing the polymer-enriched phase and the reactor effluents from the one or more G2 reactor trains into the G2 separator (separator-blender) to separate another monomer-rich phase from a polymer-rich blend; recycling to one or more G1 reactor trains the separated monomer-rich phase from the one or more G1 separators; and recycling to one or more G2 reactor trains the separated monomer-rich phase from the G2 separator. The polymer-rich blend is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a polymer product blend.

    摘要翻译: 提供了用于聚合物的流体相在线共混的单体再循环方法。 在一种形式中,单体再循环方法包括提供一个或多个反应器列的第一组(G1)和一个或多个反应器列的第二组(G2)和与G1流体连接的一个或多个分离器和一个流体连接到 G2; 在G1和G2烯烃单体的每个反应器序列中聚合以形成均相流体相聚合物 - 单体混合物,其中每个G1和G2反应器列具有至少一个共同的单体; 使来自一个或多个G1反应器列的反应器流出物通过一个或多个G1分离器以将富含单体的相与富集聚合相分离; 将聚合物富集相和反应器流出物从一个或多个G2反应器列车通入G2分离器(分离器 - 共混器)中,以从富含聚合物的共混物中分离另一富含单体的相; 将一个或多个G1反应器再循环到一个或多个G1分离器中,从而分离出富含单体的相。 并循环到一个或多个G2反应器中,从G2分离器中将分离的富含单体的相进行培养。 将富含聚合物的共混物输送到下游整理阶段,以进一步进行单体汽提,干燥和/或造粒以形成聚合物产物混合物。

    Monomer/solvent separation and recycle process for propylene containing polymers
    5.
    发明授权
    Monomer/solvent separation and recycle process for propylene containing polymers 有权
    含丙烯聚合物的单体/溶剂分离和循环过程

    公开(公告)号:US08067512B2

    公开(公告)日:2011-11-29

    申请号:US12384401

    申请日:2009-04-03

    IPC分类号: C08F2/00 C08F110/06

    摘要: Monomer/solvent separation and recycle processes for continuous supercritical, solution and advanced solution polymerization processes for propylene-containing polymers and their blends are provided. The advantageous monomer/solvent separation and recycle process includes heating a polymer-lean recycle stream coming from a gravimetric separator positioned downstream of the reactor to form a heated polymer-lean recycle stream, and subsequently combining the heated polymer-lean recycle stream with the one or more homogenous reactor effluent streams to form a heated reactor effluent mixed stream. The heated reactor effluent mixed stream may then be passed through a pressure let-down valve followed and a gravimetric separator, such as to provide for reduced fouling propensity of the polymer-rich phase and sufficient heating of the polymer-rich phase to be able to pass through the remainder of the processing steps to form a propylene based polymer product without additional heat.

    摘要翻译: 提供了用于含丙烯聚合物及其共混物的连续超临界,溶液和高级溶液聚合方法的单体/溶剂分离和再循环方法。 有利的单体/溶剂分离和再循环方法包括加热来自位于反应器下游的重力分离器的贫聚合物再循环流,形成加热的贫聚合物循环流,随后将加热的贫聚合物再循环流与 或更均匀的反应器流出物流以形成加热的反应器流出物混合流。 然后,加热的反应器流出物混合流可以通过压力降压阀和重量分离器,例如提供富聚合物相的减少的结垢倾向,并充分加热富含聚合物的相以能够 通过其余的处理步骤以形成无需额外热量的丙烯基聚合物产品。

    Monomer/solvent separation and recycle process for propylene containing polymers
    7.
    发明申请
    Monomer/solvent separation and recycle process for propylene containing polymers 有权
    含丙烯聚合物的单体/溶剂分离和循环过程

    公开(公告)号:US20090259005A1

    公开(公告)日:2009-10-15

    申请号:US12384401

    申请日:2009-04-03

    IPC分类号: C08F2/04

    摘要: Monomer/solvent separation and recycle processes for continuous supercritical, solution and advanced solution polymerization processes for propylene-containing polymers and their blends are provided. The advantageous monomer/solvent separation and recycle process includes heating a polymer-lean recycle stream coming from a gravimetric separator positioned downstream of the reactor to form a heated polymer-lean recycle stream, and subsequently combining the heated polymer-lean recycle stream with the one or more homogenous reactor effluent streams to form a heated reactor effluent mixed stream. The heated reactor effluent mixed stream may then be passed through a pressure let-down valve followed and a gravimetric separator, such as to provide for reduced fouling propensity of the polymer-rich phase and sufficient heating of the polymer-rich phase to be able to pass through the remainder of the processing steps to form a propylene based polymer product without additional heat.

    摘要翻译: 提供了用于含丙烯聚合物及其共混物的连续超临界,溶液和高级溶液聚合方法的单体/溶剂分离和再循环方法。 有利的单体/溶剂分离和再循环方法包括加热来自位于反应器下游的重力分离器的贫聚合物再循环流,形成加热的贫聚合物循环流,随后将加热的贫聚合物再循环流与 或更均匀的反应器流出物流以形成加热的反应器流出物混合流。 然后,加热的反应器流出物混合流可以通过压力降压阀和重量分离器,例如提供富聚合物相的减少的结垢倾向,并充分加热富含聚合物的相以能够 通过其余的处理步骤以形成无需额外热量的丙烯基聚合物产品。

    Bulk homogeneous polymerization process for ethylene propylene copolymers
    9.
    发明申请
    Bulk homogeneous polymerization process for ethylene propylene copolymers 有权
    乙烯丙烯共聚物的均匀聚合方法

    公开(公告)号:US20090163678A1

    公开(公告)日:2009-06-25

    申请号:US12291898

    申请日:2008-11-14

    IPC分类号: C08F2/01 C08F4/06 C08F210/02

    摘要: Provided are bulk homogeneous polymerization processes for producing ethylene propylene random copolymers. The process includes contacting in a reactor or in a series of reactors propylene monomer, ethylene comonomer with one or more catalyst systems and optional solvent (present at less than 40 wt %), wherein the reactor train is at a temperature of between 65° C. and 180° C. and at a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa, and wherein the polymerization system for the reactor train is in its dense fluid state to form a polymer reactor effluent including a homogeneous fluid phase polymer-monomer mixture in the reactor train; and wherein the resultant copolymer product comprises between 10 wt % and 20 wt % randomly distributed ethylene and the concentration of total region defects in the continuous propylene segments of the random EP copolymer is between 40 and 150% greater than in a copolymer of equivalent melt flow rate and wt % ethylene polymerized by a solution polymerization process.

    摘要翻译: 提供用于生产乙烯丙烯无规共聚物的本体均相聚合方法。 该方法包括使反应器或一系列反应器中的丙烯单体,乙烯共聚单体与一种或多种催化剂体系和任选的溶剂(以小于40wt%存在)接触,其中反应器系在65℃ 并且在低于聚合体系的浊点压力不低于10MPa的压力下低于1500MPa,并且其中反应器系列的聚合系统处于其致密的流体状态以形成聚合物反应器 流出物包括在反应器系列中的均相流体相聚合物 - 单体混合物; 并且其中所得共聚物产物包含10重量%至20重量%的随机分布的乙烯,并且随机EP共聚物的连续丙烯链段中总区域缺陷的浓度比当量熔体流动的共聚物中的区域间缺陷的浓度高40至150% 速率和wt%乙烯通过溶液聚合方法聚合。