公开(公告)号：US20230001372A1

公开(公告)日：2023-01-05

申请号：US17782047

申请日：2020-12-09

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Maurizio Dorini ,  Riccardo Rinaldi ,  Silvia Soffritti ,  Giulia Mei

IPC: B01J8/18 ,  B01J8/26 ,  B01J8/00 ,  C08F10/00

Abstract: Apparatus for carrying out a catalytic gas-phase olefin polymerization having a first polymerization zone for growing polymer particles to flow upward under fast fluidization or transport conditions, a second polymerization zone for the growing polymer particles to flow downward, and a gas/solid separation zone; wherein the second polymerization zone has an upper part being connected to the separation zone and a lower part being connected to the upper part; wherein the ratio of the height H01 of the separation zone to the diameter D01 of the separation zone is 2.5 to 4.5.

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

IPC: C08F2/01 ,  C08F2/34 ,  C08F10/00 ,  B01J8/18 ,  B01J8/24 ,  C08F10/02 ,  C08F10/08 ,  C08F10/14

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.

公开(公告)号：US20210148633A1

公开(公告)日：2021-05-20

申请号：US16623579

申请日：2018-06-21

Applicant: Basell Polyolefine GmbH

Inventor： Giulia Mei ,  Juergen Mohrbutter ,  Dieter Littmann ,  Christoph Wolf ,  Andre-Armand Finette ,  Michael Deuerling ,  Giuseppe Penzo

IPC: F26B3/06 ,  C08F110/02 ,  B01J2/20 ,  F26B5/08 ,  F26B17/22 ,  F26B21/00

Abstract: Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.

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

IPC: C08F2/34 ,  C08F2/01 ,  C08F10/02 ,  C08F10/08 ,  C08F10/14 ,  B01J8/18 ,  B01J8/24

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.

公开(公告)号：US10005862B2

公开(公告)日：2018-06-26

申请号：US14654252

申请日：2013-12-16

Applicant: Basell Polyolefine GmbH

Inventor： Andre-Armand Finette ,  Christoph Wolf ,  Danir Khayrullin ,  Giulia Mei ,  Juergen Mohrbutter ,  Dieter Littmann

IPC: C08F210/02 ,  C08F210/04 ,  C08F210/08 ,  C08F2/00 ,  C07C67/54

CPC classification number: C08F210/02 ,  C08F2/00 ,  C08F218/08

Abstract: Process for copolymerizing ethylene and esters of vinyl alcohol in the presence of free-radical polymerization initiators at pressures in the range of from 110 MPa to 500 MPa and temperatures in the range of from 100° C. to 350° C. in a continuously operated polymerization apparatus comprising a polymerization reactor and one or more compressors, which compress the monomer mixture fed to the polymerization reactor to the polymerization pressure, wherein the monomer mixture is compressed by a sequence of compression stages in which the compressed gas mixture is cooled after each compression stage and the fraction of the monomer mixture, which is liquid after this cooling, is separated off and returned to the polymerization apparatus in liquid form, and wherein at least a part of the liquid fractions obtained after compressing the monomer mixture in the respective compression stage to a pressure of from 0.2 MPa to 10 MPa is purified before being returned to the polymerization process.

公开(公告)号：US20170183429A1

公开(公告)日：2017-06-29

申请号：US15461064

申请日：2017-03-16

Applicant: Basell Polyolefine GmbH

Inventor： Dieter Littmann ,  Jürgen Peter Mohrbutter ,  Giulia Mei ,  Andre-Armand Finette ,  Sven Georg Wolfram ,  Michael Deuerling ,  Danir Khayrullin ,  Georg Groos ,  Christoph Wolf

IPC: C08F110/02 ,  B01J19/24 ,  C08J5/18

CPC classification number: C08F110/02 ,  B01J19/2415 ,  C08F2/01 ,  C08F2/34 ,  C08J5/18 ,  C08J2323/06 ,  C08F2/00 ,  C08F2500/12 ,  C08F2500/26

Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa−1 to 0.0069 MPa−1 and an inner surface which has a surface roughness Ra of 2 μm or less.

公开(公告)号：US20160289356A1

公开(公告)日：2016-10-06

申请号：US14654252

申请日：2013-12-16

Applicant: BASELL POLYOLEFINE GMBH

Inventor： Andre-Armand Finette ,  Christoph Wolf ,  Danir Khayrullin ,  Giulia Mei ,  Juergen Mohrbutter ,  Dieter Littmann

IPC: C08F210/02

CPC classification number: C08F210/02 ,  C08F2/00 ,  C08F218/08

Abstract: Process for copolymerizing ethylene and esters of vinyl alcohol in the presence of free-radical polymerization initiators at pressures in the range of from 110 MPa to 500 MPa and temperatures in the range of from 100° C. to 350° C. in a continuously operated polymerization apparatus comprising a polymerization reactor and one or more compressors, which compress the monomer mixture fed to the polymerization reactor to the polymerization pressure, wherein the monomer mixture is compressed by a sequence of compression stages in which the compressed gas mixture is cooled after each compression stage and the fraction of the monomer mixture, which is liquid after this cooling, is separated off and returned to the polymerization apparatus in liquid form, and wherein at least a part of the liquid fractions obtained after compressing the monomer mixture in the respective compression stage to a pressure of from 0.2 MPa to 10 MPa is purified before being returned to the polymerization process.

Abstract translation: 在自由基聚合引发剂的存在下，在连续操作的聚合装置中在110MPa至500MPa的范围内和在100℃至350℃的温度范围内共聚乙烯和乙烯醇的酯的方法 包括聚合反应器和一个或多个压缩机，其将进料到聚合反应器的单体混合物压缩至聚合压力，其中单体混合物通过一系列压缩阶段压缩，其中压缩气体混合物在每个压缩阶段之后被冷却， 在该冷却后液体的单体混合物的分数被分离出并返回到液体形式的聚合装置中，并且其中在各个压缩阶段将单体混合物压缩后获得的至少一部分液体馏分为 在返回到聚合过程之前，将0.2MPa至10MPa的压力进行纯化。

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。