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公开(公告)号：US20230014128A1
公开(公告)日：2023-01-19
申请号：US17780318
申请日：2020-12-01
发明人： Andre-Armand Finette , Juergen Mohrbutter , Christoph Wolf , Michael Deuerling , Danir Khayrullin , Dieter Littmann
IPC分类号： C08F110/02 , C08F2/01 , C08F2/38 , C08L23/06
摘要： A process for preparing ethylene polymers including the step of polymerizing ethylene or copolymerizing ethylene and one or more comonomers at a temperature from 100° C. to 350° C. and a pressure of from 110 MPa to 350 MPa in a continuously operated tubular polymerization reactor, thereby yielding a reaction mixture, wherein the tubular polymerization reactor has a reactor cooling jacket for removing the heat of the reaction and a pressure control valve, the reaction mixture leaves the reactor through the pressure control valve, the reaction mixture then passes a post-reactor cooler equipped with a post-reactor cooling jacket, the reactor cooling jacket is provided with a reactor coolant having an inlet temperature and the post-reactor cooling jacket is provided with a post-reactor coolant having an inlet temperature, and the inlet temperature of the post-reactor coolant is independently controlled from the inlet temperature of the reactant coolant.
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公开(公告)号：US09908950B2
公开(公告)日：2018-03-06
申请号：US15550256
申请日：2016-02-22
CPC分类号： C08F2/01 , B01J19/0006 , B01J19/2415 , B01J2219/00051 , B01J2219/00065 , B01J2219/00211 , B01J2219/00337 , C08F210/02 , G01L19/0092
摘要： A process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa in a continuously operated polymerization reactor which is controlled by a pressure control valve at the outlet of the polymerization reactor, the process comprising continuously monitoring the pressure within the polymerization reactor, feeding a pressure signal to a controller for controlling the control valve and having the controller altering the opening of the pressure control valve to control the pressure within the polymerization reactor, wherein the controller starts an emergency shutdown program when the pressure control valve closes more than a preset threshold value and the pressure within the polymerization reactor decreases below a preset pressure threshold.
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公开(公告)号：US20180030160A1
公开(公告)日：2018-02-01
申请号：US15550256
申请日：2016-02-22
IPC分类号： C08F2/01 , G01L19/00 , B01J19/00 , C08F210/02 , B01J19/24
CPC分类号： C08F2/01 , B01J19/0006 , B01J19/2415 , B01J2219/00051 , B01J2219/00065 , B01J2219/00211 , B01J2219/00337 , C08F210/02 , G01L19/0092
摘要： A process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa in a continuously operated polymerization reactor which is controlled by a pressure control valve at the outlet of the polymerization reactor, the process comprising continuously monitoring the pressure within the polymerization reactor, feeding a pressure signal to a controller for controlling the control valve and having the controller altering the opening of the pressure control valve to control the pressure within the polymerization reactor, wherein the controller starts an emergency shutdown program when the pressure control valve closes more than a preset threshold value and the pressure within the polymerization reactor decreases below a preset pressure threshold.
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公开(公告)号：US20170348658A1
公开(公告)日：2017-12-07
申请号：US15523909
申请日：2015-11-12
发明人： Dieter Littmann , Georg Groos , Andre-Armand Finette , Michael Deuerling , Sven Wolfram , Juergen Mohrbutter , Danir Khayrullin , Claudio Fibla , Christoph Wolf
CPC分类号： B01J4/002 , B01J2219/185 , B01J2219/1943 , B01J2219/1946 , C08F2/004 , C08F2/01 , C08F6/001 , C08J11/02 , Y02P20/582
摘要： 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.
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公开(公告)号：US20220410102A1
公开(公告)日：2022-12-29
申请号：US17780201
申请日：2020-12-01
发明人： Christoph Wolf , Juergen Mohrbutter , Andre-Armand Finette , Michael Deuerling , Danir Khayrullin , Dieter Littmann
摘要： A high-pressure polymerization system having a) a polymerization reactor and b) a reactor blow down system having b1) a reactor blow down vessel, having a circular design over a major portion P having a L/D-ratio in the range from 1.75 to 10.0 and containing an aqueous quenching medium, b2) a release line connecting the polymerization reactor with the reactor blow down vessel and having an outlet located above a maximum level for the aqueous quenching medium, b3) a first emergency valve in the release line to open and close fluid communication between the polymerization reactor and the reactor blow down system, and wherein the release line outlet has a joining piece having an angle (a) between the central axis and a tangent at the reactor blow down vessel in the range from 5° to 70° and the reactor blow down vessel has a vent stack containing a constricted section.
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公开(公告)号：US20200369792A1
公开(公告)日：2020-11-26
申请号：US16636804
申请日：2018-08-16
发明人： Christoph Wolf , Dieter Littmann , Michael Deuerling , Andre-Armand Finette , Danir Khayrullin , Juergen Mohrbutter
摘要： A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.
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7.发明申请公开(公告)号：US20170335028A1
公开(公告)日：2017-11-23
申请号：US15674176
申请日：2017-08-10
发明人： Dieter Littmann , Jürgen Peter Mohrbutter , Giulia Mei , Andre-Armand Finette , Sven Georg Wolfram , Michael Deuerling , Danir Khayrullin , Georg Groos , Christoph Wolf
IPC分类号： C08F110/02 , B01J19/24 , C08J5/18
CPC分类号： C08F110/02 , B01J19/2415 , C08F2/01 , C08F2/34 , C08J5/18 , C08J2323/06 , C08F2/00 , C08F2500/12 , C08F2500/26
摘要： 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.
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8.发明授权公开(公告)号：US09758603B2
公开(公告)日：2017-09-12
申请号：US15461064
申请日：2017-03-16
发明人： Dieter Littmann , Jürgen Peter Mohrbutter , Giulia Mei , Andre-Armand Finette , Sven Georg Wolfram , Michael Deuerling , Danir Khayrullin , Georg Groos , Christoph Wolf
CPC分类号： C08F110/02 , B01J19/2415 , C08F2/01 , C08F2/34 , C08J5/18 , C08J2323/06 , C08F2/00 , C08F2500/12 , C08F2500/26
摘要： 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.
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9.发明申请HIGH-PRESSURE POLYMERIZATION PROCESS OF ETHYLENICALLY UNSATURATED MONOMERS IN A TUBULAR REACTOR 有权管状反应器中乙烯基不饱和单体的高压聚合方法公开(公告)号：US20170022303A1
公开(公告)日：2017-01-26
申请号：US15240084
申请日：2016-08-18
发明人： Dieter Littmann , Jurgen Peter Mohrbutter , Giulia Mei , Andre-Armand Finette , Sven Georg Wolfram , Michael Deuerling , Danir Khayrullin , Georg Groos , Christoph Wolf
IPC分类号： C08F110/02 , B01J19/24
CPC分类号： C08F110/02 , B01J19/2415 , C08F2/01 , C08F2/34 , C08J5/18 , C08J2323/06 , C08F2/00 , C08F2500/12 , C08F2500/26
摘要： 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.
摘要翻译： 本技术涉及在自由基聚合引发剂存在下聚合或共聚烯键式不饱和单体的方法，其中聚合在连续操作的管式反应器中在100℃至350℃的温度下进行，压力 从180MPa到340MPa，比表面积Asp为2m 2 /（t / h）至5.5m 2 /（t / h），并且管式反应器的比值RDsp为0.0050MPa-1至0.0069MPa -1，表面粗糙度Ra为2μm以下的内表面。
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公开(公告)号：US10562986B2
公开(公告)日：2020-02-18
申请号：US16099996
申请日：2017-05-09
IPC分类号： C08F2/34 , C08F2/01 , B01J19/18 , C08F210/02
摘要： A process for polymerizing or copolymerizing ethylenically unsaturated monomers at pressures in the range of from 110 MPa to 500 MPa in a production line comprising a continuously operated polymerization reactor, wherein the process comprises monitoring the surrounding of the production line with respect to an occurrence of a leakage of monomers or of reaction mixture by an IR point detector arrangement of at least three groups of IR point detectors which are capable of detecting hydrocarbons and the groups of IR point detectors are operating according to a voting logic and starting automatically an emergency pressure release program when a group of IR point detectors of the IR point detector arrangement detects the presence of hydrocarbons.
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