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1. 发明授权

US10829610B2 Process and apparatus for in-line blending of polymers 有权
公开(公告)号：US10829610B2
公开(公告)日：2020-11-10
申请号：US16065066
申请日：2016-12-21
申请人： BOREALIS AG
发明人： Mohammad Al-Haj Ali , Michiel Bergstra , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Christof Wurnitsch , Samuli Zitting , Vasileios Kanellopoulos , Jani Aho
IPC分类号： C08F10/02 , C08F210/16 , C08F2/01 , C08J11/02 , C08F2/00 , C08F6/00 , C08F2/06 , C08F6/12 , C08L23/08 , C08L23/14
摘要： The present invention deals with a process for polymerising olefins in a solution and withdrawing a stream of the solution from the polymerisation reactor and passing it to a sequence of heating steps. The heated solution is passed to a separation step, which is conducted at a pressure of no more than 15 bar and in which separation step a liquid phase comprising the polymer and a vapour phase coexist. A vapour stream and a concentrated solution stream comprising the polymer are withdrawn from the separation step. At least a part of the vapour stream is passed to the first polymerisation reactor, to the second polymerisation reactor or to both.

2. 发明授权

US11149096B2 Method of recovering olefins in a solution polymerization process 有权
公开(公告)号：US11149096B2
公开(公告)日：2021-10-19
申请号：US16646606
申请日：2018-11-22
申请人： Borealis AG
发明人： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Samuli Zitting
IPC分类号： C08F6/00 , C08F2/06
摘要： The present invention relates to a process for removing hydrocarbons comprising the steps of: (A) passing a stream of a solution into a separator wherein a liquid phase comprising polymer and a vapor phase coexist; (B) withdrawing a vapor stream and a concentrated solution stream from the separator; (C) passing at least a part of the vapour stream into a first fractionator; (D) withdrawing a first overhead stream and a first bottom stream from the first fractionator; (E) passing the first bottom stream to a second fractionator; (F) withdrawing a second overhead stream and a second bottom stream from the second fractionator; characterized in that at least a part of the second overhead stream is withdrawn as a purge stream.

3. 发明授权

US10597472B2 In-line blending process 有权
公开(公告)号：US10597472B2
公开(公告)日：2020-03-24
申请号：US15776095
申请日：2016-12-21
申请人： Borealis AG
发明人： Henry Sleijster , Mohammad Al-Haj Ali , Jukka Rasanen , Samuli Zitting , Michiel Bergstra , Erik Eriksson , Christof Wurnitsch , Guhan Mathivanan , Sameer Vijay , Vasileios Kanellopoulos , Jani Aho , Jouni Takakarhu
IPC分类号： C08J11/02 , C08F6/10 , C08F210/14 , C08F6/00 , C08F2/06 , C08F6/12 , C08F10/00 , C08F210/02 , B01D1/14 , B01D1/00
摘要： An in-line blending process for polymers comprising: (a) providing two or more reactor-low pressure separator units (1,7) in parallel configuration, each reactor-low pressure separator unit comprising one reactor (2,8) fluidly connected to one low pressure separator (3,9) downstream and further a recycling line (5,11) connecting the low pressure separator (3,9) back to the corresponding reactor (2,8); (b) polymerizing olefin monomers having two or more carbon atoms in each of the reactors (2,8) in solution polymerisation; (c) forming an unreduced reactor effluents stream including a homogenous fluid phase polymer-monomer-solvent mixture in each of the reactors (2,8), (d) passing the unreduced reactor effluents streams from each of the reactors (2,8) through the corresponding low pressure separators (3,9), whereby the temperature and pressure of the low pressure separators (3,9) is adjusted such that a liquid phase and a vapour phase are obtained, whereby yielding a polymer-enriched liquid phase and a polymer-lean vapour phase, and (e) separating the polymer-lean vapour phase from the polymer-enriched liquid phase in each of the low-pressure separators (3,9) to form separated polymer-lean vapour streams and separated polymer-enriched liquid streams; (f) combining the polymer-enriched liquid streams from step (e) in a further low-pressure separator and/or a mixer (13) to produce a combined polymer-enriched liquid stream (16); (g) reintroducing the polymer-lean vapour streams from step (e) via recycling lines (5,11) into the corresponding reactors (2,8).

4. 发明授权

US11512157B2 Method of recovering olefins in a solution polymerisation process 有权
公开(公告)号：US11512157B2
公开(公告)日：2022-11-29
申请号：US16768601
申请日：2018-11-22
申请人： Borealis AG
发明人： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Samuli Zitting
IPC分类号： C08F210/16 , B01D3/14 , B01J19/06 , C08F6/00 , C08F6/04
摘要： The present invention relates to a process for removing hydrocarbons comprising the steps of: (A) passing a stream of a solution into a separator wherein a liquid phase comprising polymer and a vapour phase coexist; (B) withdrawing a vapour stream and a concentrated solution stream from the separator; (C) passing at least a part of the vapour stream into a first fractionator; (D) withdrawing a first overhead stream and a first bottom stream from the first fractionator; (E) passing the first overhead stream to a second fractionator; (F) withdrawing a second overhead stream and a second bottom stream from the second fractionator; (G) passing the second overhead stream to a third fractionator; (H) withdrawing a third overhead stream and a third bottom stream from the third fractionator; characterised in that at least a part of the third bottom stream is withdrawn as a purge stream.

5. 发明授权

US11440983B2 Phase-stabilized ethylene alpha olefin copolymerization process 有权
公开(公告)号：US11440983B2
公开(公告)日：2022-09-13
申请号：US16761917
申请日：2018-05-22
申请人： Borealis AG
发明人： Mohammad Al-Haj Ali , Henry Sleijster
IPC分类号： C08F210/16 , C08F2/01 , C08F2/04 , C08F6/06 , C08F2/06
摘要： A process for copolymerizing ethylene and at least one C3 to C8 alpha olefin to obtain an ethylene-C3 to C8 alpha olefin copolymer, the process comprising a) copolymerizing ethylene and at least one C3 to C8 alpha olefin in a solvent in a solution polymerization reactor to obtain an intermediate polymer solution, b) discharging an effluent stream from the intermediate polymer solution into a heat exchanger, c) setting the temperature of the effluent stream in the heat exchanger to obtain a heated effluent stream, d) feeding the heated effluent stream to a flash separation, e) separating at least a part of the ethylene-C3 to C8 alpha olefin copolymer in the flash separation, characterized by feeding an inert hydrocarbon fulfilling 90° C.

6. 发明申请

US20220380498A1 Process for the Polymerization of Olefins in Solution Comprising Deactivating the Polymerization Catalyst by Heat 有权
公开(公告)号：US20220380498A1
公开(公告)日：2022-12-01
申请号：US17774967
申请日：2020-12-07
申请人： Borealis AG
发明人： Mohammad Al-haj Ali , Michiel Bergstra , Erik Eriksson , Sameer Vijay , Christof Wumitsch , Samuli Zitting , Henry Sleijster , Noureddine Ajellal
IPC分类号： C08F210/16 , C08F4/659
摘要： The present invention relates to a polymerization process, comprising: a) supplying a feed containing ethylene and at least one alpha-olefin having 3 to 12 carbon atoms in a hydrocarbon solvent to a polymerization reactor, b) contacting the feed of step a) in the reactor with a catalyst to form a reaction mixture containing an ethylene-alpha-olefin co-polymer, c) withdrawing the reaction mixture from the polymerization reactor as a reactor outlet stream which comprises the ethylene-alpha-olefin co-polymer, unreacted monomer and comonomer, catalyst, and hydrocarbon solvent, d) heating the reactor outlet stream to a temperature which is at least 5° C. higher than the temperature of the reaction mixture at the outlet of the reactor for a time period of between 1 and 250 seconds in order to de-activate the polymerization catalyst, and e) separating hydrocarbon solvent, monomer and comonomer from the reactor outlet stream and recycling it back to the polymerization reactor without further purification steps.

7. 发明授权

US10604595B2 Process for withdrawing polyolefins 有权
公开(公告)号：US10604595B2
公开(公告)日：2020-03-31
申请号：US15776089
申请日：2016-12-21
申请人： Borealis AG
发明人： Mohammad Al-Haj Ali , Erik Eriksson , Sameer Vijay , Guhan Mathivanan , Jukka Rasanen , Henry Sleijster , Christof Wurnitsch , Samuli Zitting
IPC分类号： C08F6/12 , C08F6/00 , B01J8/00 , C08L23/02
摘要： A process for withdrawing polyolefins from a reactor includes: continuously withdrawing a liquid solution stream from a solution polymerization reactor and passing the liquid solution stream into a low pressure separator; withdrawing a first vapour stream and a first liquid stream from the separator and passing the first vapour stream into a washing column; withdrawing a second vapour stream from the washing column and feeding it via a condenser line to a condenser; cooling the second vapour stream in the condenser so that part of the second vapour stream condenses, producing a condensed second vapour stream and an uncondensed second vapour stream; passing the condensed second vapour stream to an upper part of the washing column via a reflux line; withdrawing a second liquid stream from the washing column and passing at least part of the second liquid stream to the separator via a recycling line; and recovering heat.

8. 发明申请

US20190126511A1 PROCESS FOR HYDRAULIC CONVEYING OF POLYOLEFIN PELLETS 审中-公开
公开(公告)号：US20190126511A1
公开(公告)日：2019-05-02
申请号：US16093779
申请日：2017-05-09
申请人： Borealis AG
发明人： Jukka Räsänen , Samuli Zitting , Henry Sleijster , Michiel Bergstra , Sameer Vijay
IPC分类号： B29B9/16 , B29B9/06 , F26B17/00
摘要： Process for hydraulic conveying of polyolefin pellets comprising the steps of: (i) extruding molten polyolefin into strands and cutting the strands into pellets in an underwater pelletiser (A); (ii) withdrawing a first pellet suspension stream (1.1) from the pelletiser; (iii) concentrating the first pellet suspension stream in a first pellet separator (B); (iv) passing the concentrated pellet stream (1.4) to a hydraulic conveying line through a first vessel (D) and mixing it with water thereby producing a second pellet suspension stream (1.5); (v) withdrawing the second pellet suspension stream from the first vessel and passing it to a second pellet separator (E); (vi) separating the pellets from water in the second pellet separator thereby creating a second water stream (1.6) and a dry pellet stream (1.10) and passing the second water stream back to the first vessel; wherein any one of the first or second pellet suspension stream or the dry pellet stream comprises an antiblock.

9. 发明申请

US20180327529A1 IN-LINE BLENDING PROCESS 审中-公开
公开(公告)号：US20180327529A1
公开(公告)日：2018-11-15
申请号：US15776095
申请日：2016-12-21
申请人： Borealis AG
发明人： Henry Sleijster , Mohammad Al-Haj Ali , Jukka Rasanen , Samuli Zitting , Michiel Bergstra , Erik Eriksson , Christof Wurnitsch , Guhan Mathivanan , Sameer Vijay , Vasileios Kanellopoulos , Jani Aho , Jouni Takakarhu
IPC分类号： C08F210/14 , C08F210/02 , C08J11/02
摘要： An in-line blending process for polymers comprising: (a) providing two or more reactor-low pressure separator units (1,7) in parallel configuration, each reactor-low pressure separator unit comprising one reactor (2,8) fluidly connected to one low pressure separator (3,9) downstream and further a recycling line (5,11) connecting the low pressure separator (3,9) back to the corresponding reactor (2,8); (b) polymerizing olefm monomers having two or more carbon atoms in each of the reactors (2,8) in soltion polymerisation; (c) forming an unreduced reactor effluents stream including a homogenous fluid phase polymer-monomer-solvent mixture in each of the reactors (2,8), (d) passing the unreduced reactor effluents streams from each of the reactors (2,8) through the corresponding low pressure separators (3,9), whereby the temperature and pressure of the low pressure separators (3,9) is adjusted such that a liquid phase and a vapour phase are obtained, whereby yielding a polymer-enriched liquid phase and a polymer-lean vapour phase, and (e) separating the polymer-lean vapour phase from the polymer-enriched liquid phase in each of the low-pressure separators (3,9) to form separated polymer-lean vapour streams and separated polymer-enriched liquid streams; (f) combining the polymer-enriched liquid streams from step (e) in a further low-pressure separator and/or a mixer (13) to produce a combined polymer-enriched liquid stream (16); (g) reintroducing the polymer-lean vapour streams from step (e) via recycling lines (5,11) into the corresponding reactors (2,8).

10. 发明申请

US20220348702A1 Polymerization Process 有权
公开(公告)号：US20220348702A1
公开(公告)日：2022-11-03
申请号：US17624449
申请日：2020-05-18
申请人： Borealis AG
发明人： Mohammad Al-haj Ali , Mubashar Sattar , Noureddine Ajellal , Henry Sleijster , Charlotta Weber
IPC分类号： C08F210/00 , B01D3/14 , B01D5/00
摘要： The polymerization process comprises polymerizing an olefin monomer and a comonomer in the presence of a polymerization catalyst in a polymerization step conducted in a polymerization reactor in a solvent to produce a solution comprising a polymer of the olefin monomer and the comonomer.
The polymerization process comprises withdrawing an exhaust stream of the solution from the polymerization reactor in a withdrawing step.
The polymerization process comprises separating the exhaust stream to a first primary stream and a primary concentrated solution stream in a first primary separation step, wherein the first primary stream comprises hydrocarbons and polymer.
The polymerization process comprises separating the first primary stream to a second primary stream and a third primary stream in a second primary separation step, wherein the second primary stream comprises dissolved polymer and the third primary stream comprises majority of the hydrocarbons.
The polymerization process comprises cooling the third primary stream to a temperature of −80 to 20° C. in a primary cooling step to obtain a cooled third primary stream.
The polymerization process comprises separating the cooled third primary stream to a fourth primary stream and a fifth primary stream in a third primary separation step, wherein the fourth primary stream comprises hydrocarbons in vapour phase and the fifth primary stream comprises liquid hydrocarbons.
The polymerization process comprises returning the fourth primary stream and the fifth primary stream independently in a primary returning step to a location upstream of the polymerization reactor.

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