公开(公告)号：US09931608B2

公开(公告)日：2018-04-03

申请号：US15523909

申请日：2015-11-12

Applicant: Basell Polyolefine GmbH

Inventor： Dieter Littmann ,  Georg Groos ,  Andre-Armand Finette ,  Michael Deuerling ,  Sven Wolfram ,  Juergen Mohrbutter ,  Danir Khayrullin ,  Claudio Fibla ,  Christoph Wolf

IPC: C08G63/02 ,  B01J4/00 ,  C08F2/01 ,  C08F2/00

CPC classification number: B01J4/002 ,  B01J2219/185 ,  B01J2219/1943 ,  B01J2219/1946 ,  C08F2/004 ,  C08F2/01 ,  C08F6/001 ,  C08J11/02 ,  Y02P20/582

Abstract: A process for separating polymeric and gaseous components of a polymer-monomer mixture at a pressure of from 0.12 MPa to 0.6 MPa and a temperature of from 120° C. to 300° C. in a separation vessel is provided. The separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 0.6 to 10 and an inlet pipe capable of introducing the polymer-monomer mixture into the separation vessel which the inlet pipe extends vertically from the top of the separation vessel into the separation vessel. Further a process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa comprising such a process for separating a polymer-monomer mixture is provided.

公开(公告)号：US09908954B2

公开(公告)日：2018-03-06

申请号：US15674176

申请日：2017-08-10

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 ,  C08J5/18 ,  B01J19/24 ,  C08F2/34 ,  C08F2/38

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：US20160311939A1

公开(公告)日：2016-10-27

申请号：US15101351

申请日：2014-12-03

Applicant: BASELL POLYOLEFINE GMBH

Inventor： Georg Groos ,  Erich Neumann ,  Michael Deuerling ,  Dieter Littmann

IPC: C08F6/12 ,  C08F6/10 ,  C08F2/01

CPC classification number: C08F6/12 ,  C08F2/01 ,  C08F2/02 ,  C08F2/34 ,  C08F6/001 ,  C08F6/10 ,  C08J11/02 ,  Y02P20/582 ,  C08L23/04 ,  C08F10/02 ,  C08F2/00 ,  C08F110/02 ,  C08F210/16 ,  C08F2500/08

Abstract: The present disclosure relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into in a gaseous fraction and a liquid fraction, wherein the separation is carried out at a pressure of from 15 MPa to 50 MPa and a temperature of from 120° C. to 300° C. in a separation vessel which has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 4 to 10 and which is equipped with an inlet pipe which extends vertically from the top into the separation vessel; and the ratio of the inner diameter of the inlet pipe at its lower end and the inner diameter of the separating vessel in its cylindrical part is in the range of from 0.2 to 0.4.

Abstract translation: 本公开内容涉及通过在自由基聚合引发剂存在下将烯键式不饱和单体高压聚合得到的反应混合物中的聚合物和气态组分分离成气态馏分和液体馏分的方法，其中分离 在具有垂直排列的圆柱形状的分离容器中，在15MPa至50MPa的压力和120℃至300℃的温度下进行，长度与直径L / D的比率为4 至10，并且其具有从顶部垂直延伸到分离容器中的入口管; 并且其下端的入口管的内径与其圆柱形部分中的分离容器的内径的比率在0.2至0.4的范围内。