公开(公告)号：US20150322178A1

公开(公告)日：2015-11-12

申请号：US14650532

申请日：2013-12-11

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Giulia Mei ,  Gabriele Mei ,  Antonio De Lucia ,  Pietro Baita

IPC: C08F10/02

CPC classification number: C08F10/02 ,  B29B2013/005 ,  C08F6/005 ,  C08F6/02 ,  C08L23/04 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/24

Abstract: Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, the process comprising the steps of a) discharging the polyolefin particles continuously or discontinuously from the gas-phase polymerization reactor and transferring the particles to a first degassing vessel; b) contacting therein the polyolefin particles with a gaseous stream comprising at least 85 mol-% of C3-C5 alkane while the polyolefin particles have an average residence time in the first degassing vessel of from 5 minutes to 5 hours; c) transferring the polyolefin particles to a second degassing vessel; d) contacting therein the polyolefin particles with a stream comprising nitrogen and steam while the polyolefin particles have an average residence time in the second degassing vessel of from 5 minutes to 2 hours, wherein the contacting is carried out at conditions under which no condensation of water occurs; e) transferring the polyolefin particles to a third degassing vessel; f) contacting therein the polyolefin particles with a stream of nitrogen while the polyolefin particles have an average residence time in the third degassing vessel of from 5 minutes to 8 hours, and processes for preparing polyolefin polymers by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, wherein the obtained polyolefin particles are subjected to such a treating process.

Abstract translation: 在气相聚合反应器中，在聚合催化剂体系和C3-C5烷烃作为聚合稀释剂的存在下，通过一种或多种烯烃的气相聚合得到的聚烯烃颗粒的处理方法，该方法包括以下步骤：a） 聚烯烃颗粒从气相聚合反应器连续或不连续地转移并转移到第一脱气容器中; b）使聚烯烃颗粒与包含至少85mol％的C 3 -C 5烷烃的气流接触，同时聚烯烃颗粒在第一脱气容器中的平均停留时间为5分钟至5小时; c）将聚烯烃颗粒转移到第二脱气容器; d）使聚烯烃颗粒与包含氮气和蒸汽的物流接触，同时聚烯烃颗粒在第二脱气容器中的平均停留时间为5分钟至2小时，其中接触是在没有水冷凝的条件下进行的 发生; e）将聚烯烃颗粒转移到第三脱气容器; f）使聚烯烃颗粒与氮气流接触，同时聚烯烃颗粒在第三脱气容器中的平均停留时间为5分钟至8小时，以及通过一种或多种烯烃的气相聚合制备聚烯烃聚合物的方法 在气相聚合反应器中存在聚合催化剂体系和作为聚合稀释剂的C 3 -C 5烷烃的情况下，将得到的聚烯烃颗粒进行这样的处理。

公开(公告)号：US09458259B2

公开(公告)日：2016-10-04

申请号：US14650532

申请日：2013-12-11

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Giulia Mei ,  Gabriele Mei ,  Antonio De Lucia ,  Pietro Baita

IPC: C08G63/02 ,  C08F10/02 ,  C08F6/00 ,  C08F6/02 ,  B29B13/00

CPC classification number: C08F10/02 ,  B29B2013/005 ,  C08F6/005 ,  C08F6/02 ,  C08L23/04 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/24

Abstract: Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, the process comprising the steps of a) discharging the polyolefin particles continuously or discontinuously from the gas-phase polymerization reactor and transferring the particles to a first degassing vessel; b) contacting therein the polyolefin particles with a gaseous stream comprising at least 85 mol-% of C3-C5 alkane while the polyolefin particles have an average residence time in the first degassing vessel of from 5 minutes to 5 hours; c) transferring the polyolefin particles to a second degassing vessel; d) contacting therein the polyolefin particles with a stream comprising nitrogen and steam while the polyolefin particles have an average residence time in the second degassing vessel of from 5 minutes to 2 hours, wherein the contacting is carried out at conditions under which no condensation of water occurs; e) transferring the polyolefin particles to a third degassing vessel; f) contacting therein the polyolefin particles with a stream of nitrogen while the polyolefin particles have an average residence time in the third degassing vessel of from 5 minutes to 8 hours, and processes for preparing polyolefin polymers by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, wherein the obtained polyolefin particles are subjected to such a treating process.

公开(公告)号：US09133291B2

公开(公告)日：2015-09-15

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: C08F2/00 ,  B01J19/18 ,  C08F110/02 ,  C08F10/02 ,  C08F2/34 ,  C08F10/00

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 of introducing 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; and transferring 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。

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

IPC: C08F6/00 ,  B29B13/02 ,  B29B9/12 ,  B29C47/00 ,  C08F10/00 ,  B29B13/00

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。

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.

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。