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11.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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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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13.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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公开(公告)号：US20240271876A1
公开(公告)日：2024-08-15
申请号：US18568147
申请日：2022-06-07
Applicant: Basell Polyolefine GmbH
Inventor： Pier Luigi Di Federico , Riccardo Rinaldi , Gian Luca Bonaccorsi , Giuseppe Penzo , Maurizio Dorini
CPC classification number: F28D7/163 , C08F2/34 , F28D1/053 , F28F1/006 , F28F2009/029
Abstract: A multitubular heat exchanger for cooling a gas stream. including an inlet chamber: a bundle of tubes encased in a shell structure: and an outlet chamber, wherein (a) each tube has an inlet with a diameter of d1: a longitudinal middle part with a diameter of d2: an outlet: and (b) d1 is larger than d2.
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公开(公告)号：US20240075450A1
公开(公告)日：2024-03-07
申请号：US18256065
申请日：2021-12-07
Applicant: Basell Polyolefine GmbH
Inventor： Giuseppe Penzo , Maurizio Dorini , Riccardo Rinaldi , Enrico Balestra , Gian Luca Bonaccorsi
CPC classification number: B01J19/2435 , B01J4/001 , B01J8/1854 , B01J19/2405 , B01J2204/002 , B01J2208/00991 , B01J2219/185
Abstract: A reactor for carrying out a gas-phase olefin polymerization in the presence of a polymerization catalyst, made from or containing (i) a first polymerization zone adapted and arranged for growing polymer particles to flow upward under fast fluidization or transport conditions, (ii) a second polymerization zone adapted and arranged for the growing polymer particles to flow downward, and (iii) a set of bars for introducing feedstock or a barrier stream into the reactor, wherein each bar has (a) a hollow space along the length of the bar, (b) a particle deviating top, and (c) a multiplicity of openings arranged along the bottom half of the periphery of the bar.
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Patent Agency Ranking
公开(公告)号：US20210214472A1
公开(公告)日：2021-07-15
申请号：US16967387
申请日：2019-02-04
Applicant: Basell Polyolefine GmbH
Inventor： Pietro Baita , Maurizio Dorini , Giulia Mei , Gerhardus Meier , Giuseppe Penzo , Riccardo Rinaldi
Abstract: A gas-phase polymerization reactor for the gas-phase polymerization of olefins including a polymerization zone having a recycle line for (a) withdrawing reaction gas from the reactor, (b) leading the reaction gas through a heat-exchanger for cooling, and (c) feeding the reaction gas back to the reactor, wherein the recycle line has the heat-exchanger, a centrifugal compressor having variable guide vanes, and a butterfly valve, and a related process for preparing an olefin polymer in the gas-phase polymerization reactor.
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公开(公告)号：US09809659B2
公开(公告)日：2017-11-07
申请号：US15321152
申请日：2015-06-22
Applicant: Basell Polyolefine GmbH
Inventor： Giuseppe Penzo , Rodrigo Carvajal , Reinhard Kuehl , Elke Damm
Abstract: A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.
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18.发明授权Process for treating polyolefin particles obtained by gas-phase polymerization 有权用于处理通过气相聚合获得的聚烯烃颗粒的方法公开(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
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.
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公开(公告)号：US20250121343A1
公开(公告)日：2025-04-17
申请号：US18568207
申请日：2022-06-07
Applicant: Basell Polyolefine GmbH
Inventor： Pier Luigi Di Federico , Riccardo Rinaldi , Gian Luca Bonaccorsi , Giuseppe Penzo , Maurizio Dorini
Abstract: An apparatus for the gas-phase polymerization of olefins including a reactor having a polymerization zone, a recycle line for withdrawing reaction gas from the reactor and feeding the reaction gas back into the reactor, a compressor for conveying the reaction gas along the recycle line, and a heat exchanger for cooling the reaction gas, wherein at least part of the internal surface of the recycle line, which comes in contact with the reaction gas, has a surface roughness Ra of less than 5 μm.
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公开(公告)号：US20230016760A1
公开(公告)日：2023-01-19
申请号：US17783170
申请日：2020-12-09
Applicant: Basell Polyolefine GmbH
Inventor： Giulia Mei , Giuseppe Penzo , Riccardo Rinaldi , Emanuele Azzarello , Rosario Pesare
Abstract: An apparatus for carrying out a gas-phase olefin polymerization having a first polymerization zone having a cylindrical segment of diameter D01, a second polymerization zone having a cylindrical upper part of diameter D05 and a cylindrical lower part of diameter D06, a separation zone of diameter D04, a first connecting element of diameter D03, which is a bend of radius R03 or has a bend part of radius R03, a gas recycle line of diameter D08, a transition segment of diameter D02, and a second connecting element of a diameter D09, which is a bend or has a bend part, wherein the ratio D04 to D05 is 1.0 to 1.5, the ratio D05 to D06 is 1.2 to 2, the ratio R03 to D03 is 1 to 6, the ratio D03 to D01 is 0.3 to 0.85, and the ratio D08 to D02 is 1.0 to 2.2.
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