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    Process for the Polymerization of Olefins in Solution Comprising Deactivating the Polymerization Catalyst by Heat
    11.
    发明申请
    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.

    Process for withdrawing polyolefins
    12.
    发明授权
    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.

    PROCESS FOR HYDRAULIC CONVEYING OF POLYOLEFIN PELLETS
    13.
    发明申请
    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.

    IN-LINE BLENDING PROCESS
    14.
    发明申请
    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).

    Polymerization Process and Arrangement
    16.
    发明公开
    Polymerization Process and Arrangement 审中-公开

    公开(公告)号：US20240002552A1

    公开(公告)日：2024-01-04

    申请号：US18039835

    申请日：2020-12-08

    申请人： Borealis AG

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

    IPC分类号： C08F2/06 ,  C08F6/12

    CPC分类号： C08F2/06 ,  C08F6/12 ,  C08L23/08

    摘要： The disclosure relates to a polymerization process, comprising —providing a first hydrocarbon stream comprising first olefin monomer, first comonomer and solvent in a first providing step, wherein solvent is obtained from a solvent source; combining the first hydrocarbon stream with hydrocarbons recycled from at least one downstream process step to a first combined hydrocarbon stream in a first combining step; —polymerizing the first olefin monomer and the first comonomer in the presence of a first polymerization catalyst in a first polymerization step in the solvent to produce a first solution comprising a first polymer of the first olefin monomer and the first comonomer; —withdrawing a first exhaust stream of the first solution in a first withdrawing step; —separating the first exhaust stream to a first primary hydrocarbon stream and a first concentrated solution stream in a first primary separation step; —recycling the first primary hydrocarbon stream to the first combining step in a first primary recycling step; —separating the first concentrated solution stream to a first secondary hydrocarbon stream and a first polymer product stream in a first secondary separation step; —recycling the first secondary hydrocarbon stream to the first combining step in a first secondary recycling step; —providing a second hydrocarbon stream comprising second olefin monomer, second comonomer and solvent in a second providing step, wherein the solvent is obtained from the solvent source; —combining the second hydrocarbon stream with hydrocarbons recycled from at least one downstream process step to a second combined hydrocarbon stream in a second combining step; —polymerizing the second olefin monomer and the second comonomer in the presence of a second polymerization catalyst in a second polymerization step in the solvent to produce a second solution comprising a second polymer of the second olefin monomer and the second comonomer; —withdrawing a second exhaust stream of the second solution in a second withdrawing step; —separating the second exhaust stream to a second primary hydrocarbon stream and a second concentrated solution stream in a second primary separation step; —recycling the second primary hydrocarbon stream to the second combining step in a second primary recycling step; —separating the second concentrated solution stream to a second secondary hydrocarbon stream and a second polymer product stream in a second secondary separation step; and —recycling the second secondary hydrocarbon stream to second combining step in a second secondary recycling step wherein —the first providing step and the second providing step are performed in parallel; —the first combining step and the second combining step are performed in parallel; —the first polymerization step and the second polymerization step are performed in parallel; —the first withdrawing step and the second withdrawing step are performed in parallel; —the first primary separation step and the second primary separation step are performed in parallel; —the first primary recycling step and the second primary recycling step are performed in parallel; —the first secondary separation step and the second secondary separation step are performed in parallel; and —the first secondary recycling step and the second secondary recycling step are performed in parallel. The disclosure relates also to a polymerization arrangement, comprising —a solvent source arranged to provide solvent for a first hydrocarbon stream and a second hydrocarbon stream, the first hydrocarbon stream comprising first olefin monomer, first comonomer and solvent, and the second hydrocarbon stream comprising second olefin monomer, second comonomer and solvent; —a first olefin monomer source arranged to provide first olefin monomer for the first hydrocarbon stream; —a first comonomer source arranged to provide first comonomer for the first hydrocarbon stream; —a first combining means in fluid connection with the solvent source, the first olefin monomer source and the first comonomer source, wherein the first combining means is arranged to combine the first hydrocarbon stream with a stream of recycled hydrocarbons to a first combined hydrocarbon stream; —a first polymerization reactor train in fluid connection with the combining means and arranged to polymerize olefin monomer and comonomer in the presence of a polymerization catalyst in solvent to produce a first solution comprising a first polymer of the olefin monomer and the comonomer; —a first primary separation device in fluid connection with the first polymerization reactor train and arranged to separate a first exhaust stream of the first solution withdrawn from the first polymerization reactor train to a first primary hydrocarbon stream and a first concentrated solution stream; —a first primary recycling means in fluid connection with the first primary separation device and the first combining means for recycling the first primary hydrocarbon stream to the first combining means; —a first secondary separation device in fluid connection with the first primary separation device, wherein the first secondary separation device is arranged to separate the first concentrated solution stream to a first secondary hydrocarbon stream and a first polymer product stream; —a first secondary recycling means in fluid connection with the first secondary separation device and the first combining means for recycling the first secondary hydrocarbon stream to the first combining means; —a second combining means in fluid connection with the solvent source and arranged to combine the second hydrocarbon stream with a stream of recycled hydrocarbons to a second combined hydrocarbon stream; —a second polymerization reactor train in fluid connection with the combining means and arranged to polymerize olefin monomer and comonomer in the presence of a polymerization catalyst in solvent to produce a second solution comprising a second polymer of the olefin monomer and the comonomer; —a second primary separation device in fluid connection with the second polymerization reactor train and arranged to separate a second exhaust stream of the second solution withdrawn from the second polymerization reactor train to a second primary hydrocarbon stream and a second concentrated solution stream; —a second primary recycling means in fluid connection with the second primary separation device and the second combining means for recycling the second primary hydrocarbon stream to the second combining means; —a second secondary separation device in fluid connection with the second primary separation device, wherein the second secondary separation device is arranged to separate the second concentrated solution stream to a second secondary hydrocarbon stream and a second polymer product stream; and —a second secondary recycling means in fluid connection with the second secondary separation device and the second combining means for recycling the second secondary hydrocarbon stream to the second combining means wherein —the first polymerization reactor train and the second polymerization reactor train are arranged to operate in parallel; —the first primary separation device and the second separation device are arranged to operate in parallel; —the first primary recycling means and the second primary recycling means are arranged to operate in parallel; —the first secondary separation device and the second secondary separation device are arranged to operate in parallel; and —the first secondary recycling means and the second secondary recycling means are arranged to operate in parallel.

    Polymerization Process
    18.
    发明申请
    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.

    METHOD FOR TRANSPORTING POLYOLEFIN PARTICLES IN A POLYMER CONVEYING SYSTEM
    19.
    发明申请
    METHOD FOR TRANSPORTING POLYOLEFIN PARTICLES IN A POLYMER CONVEYING SYSTEM 有权

    公开(公告)号：US20210053019A1

    公开(公告)日：2021-02-25

    申请号：US17043505

    申请日：2019-04-11

    申请人： BOREALIS AG

    发明人： Jussi Laurell ,  Jenni Valonen ,  Eero Partanen ,  Henry Sleijster ,  Richard Havenaar

    IPC分类号： B01J8/00 ,  C08F210/02 ,  C08F210/06

    摘要： The present invention relates to a method for transporting polyolefin particles in a polymer conveying system, comprising the steps of a) Subjecting the polyolefin particles to moist conveying gas to produce wetted polyolefin particles; b) Transporting the wetted polyolefin particles through at least one conveying line; and c) Controlling the amount of moisture in the conveying gas of the polymer conveying system as such that at the end point of the at least one conveying line the relative humidity of the conveying gas (RHCG) is 40% to 100%, the use of said method in an in-plant polymer conveying system, the use of said method for improving dust and/or angel hair removal in polymer conveying systems and the use of said method for increasing conveying capacity of polyolefin particles with a density of from less than 850 to 910 kg/m3.

    PHASE-STABILIZED ETHYLENE ALPHA OLEFIN COPOLYMERIZATION PROCESS
    20.
    发明申请
    PHASE-STABILIZED ETHYLENE ALPHA OLEFIN COPOLYMERIZATION PROCESS 审中-公开

    公开(公告)号：US20200325257A1

    公开(公告)日：2020-10-15

    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

    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.