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    Method of recovering olefins in a solution polymerisation process
    2.
    发明授权
    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a third bottom stream from the third fractionator; characterised in that at least a part of the third bottom stream is withdrawn as a purge stream.

    Phase-stabilized ethylene alpha olefin copolymerization process
    3.
    发明授权
    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.

    Method of recovering olefins in a solution polymerization process
    7.
    发明授权
    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.

    In-line blending process
    8.
    发明授权
    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).

    DISSOLUTION PROCESS AND APPARATUS FOR A SOLVENT BASED RECYCLING PROCESS OF POLYOLEFINS
    9.
    发明公开
    DISSOLUTION PROCESS AND APPARATUS FOR A SOLVENT BASED RECYCLING PROCESS OF POLYOLEFINS 审中-公开

    公开(公告)号：US20240110032A1

    公开(公告)日：2024-04-04

    申请号：US18285278

    申请日：2022-04-13

    申请人： Borealis AG

    发明人： Mohammad Al-haj Ali ,  Henry Sleijster ,  Tom Deboel ,  Lukas Sobczak

    IPC分类号： C08J11/08 ,  B29B17/02

    CPC分类号： C08J11/08 ,  B29B17/02 ,  B29B2017/0293 ,  B29K2023/00 ,  C08J2323/00

    摘要： A dissolution apparatus for dissolving from a waste polyolefin material a polyolefin in a solvent yielding a polyolefin solution slurry), the polyolefin solution slurry comprising a polyolefin solution and undissolved residues, for a continuous polyolefin recycling process, the dissolution apparatus comprising at least one feeding device selected from a list consisting of a dry feeding device, a wet feeding device, a melt feeding device, and a solution feeding device, at least one dissolution device, wherein the at least one dissolution device has at least one first inlet for introducing the waste polyolefin material fluidly connected to an outlet of the at least one feeding device, and wherein the at least one dissolution device has at least one second inlet for introducing the solvent, and wherein the at least one dissolution device has at least one outlet for withdrawing the polyolefin solution slurry, and wherein the dissolution device comprises a vessel comprising a stirrer.

    DEVICE AND PROCESS FOR PREPARING A FEED STREAM FOR SOLUTION POLYMERIZATION
    10.
    发明公开
    DEVICE AND PROCESS FOR PREPARING A FEED STREAM FOR SOLUTION POLYMERIZATION 审中-公开

    公开(公告)号：US20230415113A1

    公开(公告)日：2023-12-28

    申请号：US18036742

    申请日：2021-11-10

    申请人： Borealis AG

    发明人： Mohammad Al-haj Ali ,  Henry Sleijster ,  Mubashar Sattar ,  Noureddine Ajellal ,  Charlotta Weber

    IPC分类号： B01J4/00 ,  C08F2/01 ,  B01D53/18

    CPC分类号： B01J4/008 ,  C08F2/01 ,  B01D53/18 ,  B01J2204/007

    摘要： A feeding device for preparing a feed stream for a solution polymerization, comprising a feed vessel, the feed vessel comprising a top zone and a bottom zone; a feed outlet for withdrawing the feed stream, wherein the feed outlet is positioned at the bottom zone; a waste outlet for withdrawing a waste vapour stream, wherein the waste outlet is positioned at the top zone; a first heat exchanger positioned below the top zone; an absorber positioned below the first heat exchanger; a first inlet for introducing a fresh liquid stream into or on top of the absorber, wherein the first inlet is positioned at the absorber; a second inlet for introducing a recycle liquid stream, wherein the second inlet is positioned below the first inlet; and a third inlet for introducing a recycle vapour stream, wherein the third inlet is positioned below the second inlet and above the feed outlet.