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11.发明授权公开(公告)号：US11505625B2
公开(公告)日：2022-11-22
申请号：US16635459
申请日：2018-08-02
Applicant: Basell Polyolefine GmbH
Inventor： Gabriele Mei , Giulia Mei , Giuseppe Penzo
Abstract: A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
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12.发明申请公开(公告)号：US20210102009A1
公开(公告)日：2021-04-08
申请号：US16635459
申请日：2018-08-02
Applicant: Basell Polyolefine GmbH
Inventor： Gabriele Mei , Giulia Mei , Giuseppe Penzo
Abstract: A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
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Patent Agency Ranking
13.发明申请公开(公告)号：US20190322775A1
公开(公告)日：2019-10-24
申请号：US16348636
申请日：2017-11-09
Applicant: Basell Polyolefine GmbH
Inventor： Gerhardus Meier , Ulf Schueller , Gabriele Mei , Massimo Covezzi , Pietro Baita , Lorella Marturano
Abstract: A process for preparing an ethylene polymer including the step of homopolymerizing ethylene or copolymerizing ethylene with one or more comonomers in a gas-phase polymerization reactor including a riser unit wherein growing polymer particles flow upwards under fluidization, fast fluidization or transport conditions and a downcomer wherein growing polymer particles flow downward in a densified form, wherein the hold-up of polymer particles in the downcomer is from 55 wt. % to 80 wt. % of the total hold-up of polymer particles in the gas-phase polymerization reactor.
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公开(公告)号：US20160108147A1
公开(公告)日：2016-04-21
申请号：US14889794
申请日：2014-05-13
Applicant: Basell Polyolefine GmbH
Inventor： Giuseppe Penzo , Gabriele Mei , Gerhardus Meier , Ulf Schueller , Antonio Ciarrocchi
IPC: C08F110/02 , B01J19/24
CPC classification number: C08F110/02 , B01J8/0025 , B01J8/1863 , B01J8/1872 , B01J8/26 , B01J19/245 , B01J2208/00274 , B01J2208/00292 , B01J2208/00557 , B01J2208/00752 , B01J2208/00761 , B01J2208/00769 , B01J2208/00991 , B01J2219/24 , C08F10/00 , C08F2/001 , C08F2/34 , C08F2/01 , C08F2500/12 , C08F2500/07 , C08F2500/24 , C08F2500/18
Abstract: A process for polymerizing olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of: a) discharging polyolefin particles into a separation chamber being at a lower pressure than the pressure in the first reactor; b) transferring the polyolefin particles within the separation chamber into a lower part which contains a bed of polyolefin particles which moves from top to bottom of this part of the separation chamber and into which a fluid is introduced so that an upward fluid stream is induced, c) withdrawing polyolefin particles from the lower end and transferring them to one of at least two lock hoppers working intermittently in parallel; and d) simultaneously pressurizing another of the at least two lock hoppers working intermittently by means of a gas comprising reaction gas coming from the second reactor.
Abstract translation: 一种在至少两个串联连接的气相聚合反应器中聚合烯烃的方法，将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法，包括以下步骤：a）将聚烯烃颗粒排入 分离室的压力低于第一反应器中的压力; b）将分离室内的聚烯烃颗粒转移到下部，该下部包含聚烯烃颗粒床，该聚烯烃颗粒床从分离室的该部分的顶部移动到底部，并且引入流体以使得向上的流体流被引入， c）从下端取出聚烯烃颗粒并将它们转移到平行间歇工作的至少两个锁定料斗之一; 以及d）通过包含来自所述第二反应器的反应气体的气体同时对所述至少两个所述至少两个锁定料斗中的另一个进行加压。
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15.发明申请PROCESS FOR DEGASSING AND BUFFERING POLYOLEFIN PARTICLES OBTAINED BY OLEFIN POLYMERIZATION 审中-公开通过烯烃聚合获得的脱脂和缓冲聚烯烃颗粒的方法公开(公告)号：US20150315302A1
公开(公告)日：2015-11-05
申请号：US14651124
申请日：2013-12-11
Applicant: BASELL POLYOLEFINE GMBH
Inventor： Giuseppe Penzo , Giulia Mei , Gabriele Mei , Antonio De Lucia , Pietro Baita
CPC classification number: C08F6/005 , B01J8/005 , B01J8/1836 , B01J8/24 , B01J2208/00176 , B01J2208/00274 , B01J2208/00991 , B01J2219/00006 , B29B9/12 , B29B13/00 , B29B13/022 , B29B2013/005 , B29C47/0004 , B29C47/0009 , B29K2023/00 , B29L2031/772 , C08F10/00 , C08L23/00
Abstract: Process for preparing a polyolefin polymer comprising the steps of a) forming a particulate polyolefin polymer by polymerizing one or more olefins in the presence of a polymerization catalyst system in a polymerization reactor; b) discharging the formed polyolefin particles from the polymerization reactor; c) degassing the polyolefin particles by a process comprising at least a final step of contacting the polyolefin particles with a nitrogen stream in a degassing vessel; and d) transferring the polyolefin particles from the vessel, in which the contacting of the polyolefin particles with the nitrogen stream is carried out, to a melt mixing device, in which the polyolefin particles are melted, mixed and thereafter pelletized, without passing the particles through a buffering device, wherein the degassing vessel is only partly filled with polyolefin particles and the empty volume within the degassing vessel is sufficient to take up additional polyolefin particles for at least 3 hours if the transfer of polyolefin particles of step d) from the degassing vessel to the melt mixing device is discontinued and the discharge of polyolefin particles from the polymerization reactor according to step b) is continued with unchanged rate.
Abstract translation: 制备聚烯烃聚合物的方法，包括以下步骤：a）通过在聚合反应器中在聚合催化剂体系存在下聚合一种或多种烯烃来形成颗粒聚烯烃聚合物; b）从聚合反应器中排出形成的聚烯烃颗粒; c）通过包括至少最后步骤的聚烯烃颗粒脱气，所述最后步骤使聚烯烃颗粒与脱气容器中的氮气流接触; 和d）将聚烯烃颗粒与氮气流的接触进行的容器中的聚烯烃颗粒转移到熔融混合装置中，其中聚烯烃颗粒被熔化，混合并随后造粒，而不通过颗粒 通过缓冲装置，其中脱气容器仅部分地填充有聚烯烃颗粒，并且如果步骤d）的聚烯烃颗粒从脱气转移，则脱气容器内的空体积足以吸收另外的聚烯烃颗粒至少3小时 中断熔融混合装置的容器，并且按照步骤b）从聚合反应器排出的聚烯烃颗粒以不变的速率继续进行。
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16.发明授权公开(公告)号：US10131719B2
公开(公告)日：2018-11-20
申请号：US14651124
申请日：2013-12-11
Applicant: Basell Polyolefine GmbH
Inventor： Giuseppe Penzo , Giulia Mei , Gabriele Mei , Antonio De Lucia , Pietro Baita
IPC: C08F6/00 , B29B13/02 , B29B9/12 , B29C47/00 , C08F10/00 , B29B13/00 , B01J8/18 , B01J8/24 , B01J8/00 , B29L31/00 , B29K23/00
Abstract: Process for preparing a polyolefin polymer comprising the steps of a) forming a particulate polyolefin polymer by polymerizing one or more olefins in the presence of a polymerization catalyst system in a polymerization reactor; b) discharging the formed polyolefin particles from the polymerization reactor; c) degassing the polyolefin particles by a process comprising at least a final step of contacting the polyolefin particles with a nitrogen stream in a degassing vessel; and d) transferring the polyolefin particles from the vessel, in which the contacting of the polyolefin particles with the nitrogen stream is carried out, to a melt mixing device, in which the polyolefin particles are melted, mixed and thereafter pelletized, without passing the particles through a buffering device, wherein the degassing vessel is only partly filled with polyolefin particles and the empty volume within the degassing vessel is sufficient to take up additional polyolefin particles for at least 3 hours if the transfer of polyolefin particles of step d) from the degassing vessel to the melt mixing device is discontinued and the discharge of polyolefin particles from the polymerization reactor according to step b) is continued with unchanged rate.
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公开(公告)号：US20140309384A1
公开(公告)日：2014-10-16
申请号：US14362842
申请日：2012-12-04
Applicant: Basell Polyolefine GmbH
Inventor： Massimo Covezzi , Giuseppe Penzo , Gabriele Mei , Giulia Mei , Pietro Baita , Gerhardus Meier , Antonio De Lucia , Ulf Schueller , Gianpiero Ferraro
IPC: C08F110/02
CPC classification number: C08F110/02 , C08F2/001 , C08F2/34 , C08F10/00 , C08F10/02 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F2/00 , C08F2/01
Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors,wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe,the process comprising the steps ofintroducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point;withdrawing polyolefin particles from the lower end of the settling pipe; andtransferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor,process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.
Abstract translation: 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法，其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管，其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床，该方法包括以下步骤：引入 流入沉降管中的流体，其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中，用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法，在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。
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