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公开(公告)号：US12290803B2
公开(公告)日：2025-05-06
申请号：US17616433
申请日：2020-04-06
Applicant: Borealis AG
Inventor： Apostolos Krallis , Vasileios Kanellopoulos , Erno Elovainio , Klaus Nyfors , Joana Kettner
IPC: C08F10/02 , B01J8/08 , B01J8/18 , B01J8/24 , B01J19/24 , C07F3/02 , C07F7/28 , C08F2/00 , C08F2/01 , C08F210/06
Abstract: A process for the production of polyolefins comprising: feeding a slurry comprising at least one polymerization catalyst, at least one carrier liquid, first olefin monomer(s) and optionally at least one first comonomer into at least one loop reactor; polymerizing the first olefin monomer(s) and optionally the at least one first comonomer yielding a first polyolefin; withdrawing the first polyolefin from the loop reactor; feeding the first polyolefin to a gas-solids olefin polymerization reactor, wherein the gas-solids olefin polymerization reactor comprises: a top zone; a middle zone, which comprises a top end in direct contact with said top zone and which is located below said top zone, the middle zone having a generally cylindrical shape; and a bottom zone, which is in direct contact with a bottom end of the middle zone and which is located below the middle zone; introducing a fluidization gas stream into the bottom zone of the gas-solids olefin polymerization reactor; polymerizing second olefin monomer(s) and optionally at least one second comonomer in the presence of the polymerization catalyst and the first polyolefin to a second polyolefin in a dense phase formed by particles of said second polyolefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; introducing a jet gas stream through one or more jet gas feeding ports in a jet gas feeding area of the middle zone at the dense phase in the middle zone of the gas-solids olefin polymerization reactor; withdrawing the second polyolefin from the gas-solids olefin polymerization reactor.
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公开(公告)号：US11981761B2
公开(公告)日：2024-05-14
申请号：US16959348
申请日：2019-01-15
Applicant: BOREALIS AG
Inventor： Mohammad Al-Haj Ali , Vasileios Kanellopoulos , Michiel Bergstra
IPC: B29B9/16 , B29B9/06 , C08F210/16 , B29K23/00
CPC classification number: C08F210/16 , B29B9/065 , B29B9/16 , B29B2009/168 , B29K2023/08
Abstract: Process for reducing the volatile organic compound content of plastomer having a density of equal to or lower than 883 kg/m3 and—a MFR2 of 100.0 g/10 min or lower (ISO 1133 at 2.16 kg load and 190° C.); to below 65 ppm (VOC, VDA277), the process comprising the steps of a) providing raw plastomer in granular form, the raw plastomer having a density of equal to or lower than 883 kg/m3; and a MFR2 of 100.0 g/10 min or lower (ISO 1133 at 2.16 kg load and 190° C.); and a volatile organic compound content (VOC, VDA277) of above 150 ppm, and the granules having an average D50 diameter of 2.5 to 4.5 mm b) subjecting said granular raw plastomer to at least one intensive hydrodynamic regime at a minimum temperature of at least 20° C. and a maximum temperature of 4° C. below the Vicat temperature (10 N, ISO 306) of the granular raw plastomer or 35° C., whatever value is lower, with the temperature measured at the gas inlet to the fast-fluidization regime, c) recovering the granular plastomer.
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公开(公告)号：US20220234021A1
公开(公告)日：2022-07-28
申请号：US17616433
申请日：2020-04-06
Applicant: Borealis AG
Inventor： Apostolos Krallis , Vasileios Kanellopoulos , Erno Elovainio , Klaus Nyfors , Joana Kettner
Abstract: A process for the production of polyolefins comprising: feeding a slurry comprising at least one polymerization catalyst, at least one carrier liquid, first olefin monomer(s) and optionally at least one first comonomer into at least one loop reactor; polymerizing the first olefin monomer(s) and optionally the at least one first comonomer yielding a first polyolefin; withdrawing the first polyolefin from the loop reactor; feeding the first polyolefin to a gas-solids olefin polymerization reactor, wherein the gas-solids olefin polymerization reactor comprises: a top zone; a middle zone, which comprises a top end in direct contact with said top zone and which is located below said top zone, the middle zone having a generally cylindrical shape; and a bottom zone, which is in direct contact with a bottom end of the middle zone and which is located below the middle zone; introducing a fluidization gas stream into the bottom zone of the gas-solids olefin polymerization reactor; polymerizing second olefin monomer(s) and optionally at least one second comonomer in the presence of the polymerization catalyst and the first polyolefin to a second polyolefin in a dense phase formed by particles of said second polyolefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; introducing a jet gas stream through one or more jet gas feeding ports in a jet gas feeding area of the middle zone at the dense phase in the middle zone of the gas-solids olefin polymerization reactor; withdrawing the second polyolefin from the gas-solids olefin polymerization reactor.
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14.发明申请公开(公告)号：US20210130508A1
公开(公告)日：2021-05-06
申请号：US17051204
申请日：2019-05-29
Applicant: BOREALIS AG
Inventor： Apostolos Krallis , Vasileios Kanellopoulos , Erno Elovainio , Klaus Nyfors
Abstract: The present invention relates to a process for polymerizing at least one olefin in gas phase in a fluidized bed in a polymerization reactor having a top zone of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically decreasing with respect to the flow direction of the fluidization gas, a middle zone in direct contact with and below said top zone of a generally cylindrical shape and a bottom zone in direct contact and below said middle zone and of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically increasing with respect to the flow direction of the fluidization gas, comprising the steps of: a) introducing a first stream of fluidization gas into the bottom zone; b) polymerizing at least one olefin in the presence of a polymerization catalyst in the fluidized bed formed by particles of a polymer of the at least one olefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; c) withdrawing a second stream comprising the fluidization gas and optionally particles of a polymer of the at least one olefin from the top zone; characterized in that the temperature of the particles of the polymer of the at least one olefin in the fluidized bed (TPP) does not exceed 120% of the operating temperature set point (TS) of the polymerization reactor, wherein TPP and TS are both given in ° C., and the use of said process for polymerizing an olefin homo- or copolymer having a narrow particle size distribution.
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公开(公告)号：US10676544B2
公开(公告)日：2020-06-09
申请号：US15773040
申请日：2016-11-22
Applicant: Borealis AG
Inventor： Kauno Alastalo , Mohammad Al-Haj Ali , Vasileios Kanellopoulos , Apostolos Krallis
Abstract: A process for polymerising alpha-olefin monomers in a loop reactor comprising the steps of introducing a main feed stream (2) comprising at least one alpha-olefin monomer into the loop reactor (1); introducing a polymerisation catalyst into the loop reactor (1); polymerising the at least one alpha-olefin monomer in the presence of the polymerisation catalyst in the loop reactor (1) to produce a slurry comprising polyolefin particles; withdrawing an outlet stream (4) comprising at least a portion of the slurry from the loop reactor (1); adding a first feed stream (9) comprising the at least one alpha-olefin monomer and/or hydrogen to the outlet stream (4) to form a concentrator inlet stream (8); introducing the concentrator inlet stream (8) into a concentrator (5); withdrawing from the concentrator (5) an overflow stream (6) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the overflow stream (6) is smaller than in the concentrator inlet stream (8); withdrawing from the concentrator (5) a bottom outlet stream (12) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the bottom outlet stream (12) is greater than in the concentrator inlet stream (8); returning the overflow stream (6) into the loop reactor (1) in an area different from that from which the outlet stream (4) is withdrawn.
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Patent Agency Ranking
公开(公告)号：US10597472B2
公开(公告)日：2020-03-24
申请号：US15776095
申请日：2016-12-21
Applicant: Borealis AG
Inventor： 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: C08J11/02 , C08F6/10 , C08F210/14 , C08F6/00 , C08F2/06 , C08F6/12 , C08F10/00 , C08F210/02 , B01D1/14 , B01D1/00
Abstract: 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).
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公开(公告)号：US10450391B2
公开(公告)日：2019-10-22
申请号：US15569954
申请日：2016-06-10
Applicant: Borealis AG
Inventor： Vasileios Kanellopoulos , Klaus Nyfors , Pablo Ivan Aguayo Arellano , Gunter Weickert , Eric-Jan Prinsen
Abstract: The present invention deals with an olefin polymerisation process. At least one olefin is polymerised in gas phase in a fluidised bed in the presence of an olefin polymerisation catalyst in a polymerisation reactor having a vertical body; a generally conical downwards tapering bottom zone; a generally cylindrical middle zone above and connected to said bottom zone; and a generally conical upwards tapering top zone above and connected to said middle zone. Fluidisation gas is introduced to the bottom zone of the reactor from where it passes upwards through the reactor, and withdrawn from the top zone of the reactor. The gas is then compressed, cooled and returned into the bottom zone of the reactor. A fluidised bed is thus formed within the reactor where the growing polymer particles are suspended in the upwards rising gas stream wherein the superficial velocity of the fluidisation gas is less than the transport velocity of the particles. There is no fluidisation grid in the reactor. The fluidisation gas is passed from an inlet chamber into the bottom zone and the gas flows from the upper part of the inlet chamber to the lower part thereof and the gas flows from the lower part of the inlet chamber to the bottom zone.
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公开(公告)号：US11897975B2
公开(公告)日：2024-02-13
申请号：US17273325
申请日：2019-09-19
Applicant: BOREALIS AG
Inventor： Klaus Nyfors , Vasileios Kanellopoulos , Erno Elovainio , Ravindra Tupe , Victor Sumerin
IPC: C08F10/02 , C08F2/00 , C08F2/34 , C08F4/02 , C08F4/64 , C08F210/02 , C08F210/06 , C08F210/14
CPC classification number: C08F2/001 , C08F2/34 , C08F4/022 , C08F4/64 , C08F210/02 , C08F210/06 , C08F210/14
Abstract: The present invention relates to a multi-stage process for producing a C2 to C8 olefin polymer composition in a process comprising at least two reactors, wherein a pre-polymerized solid Ziegler-Natta catalyst is prepared by carrying out an off-line pre-polymerization of a solid Ziegler-Natta catalyst component with a C2 to C4 olefin monomer before feeding to the polymerization process.
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公开(公告)号：US11111324B2
公开(公告)日：2021-09-07
申请号：US16065597
申请日：2016-12-15
Applicant: BOREALIS AG
Inventor： Mohammad Al-Haj Ali , Vasileios Kanellopoulos , Apostólos Krallis , Klaus Nyfors , Pablo Ivan Aguayo Arellano , Gunter Weickert , Eric-Jan Prinsen
IPC: C08F210/16 , C08F2/34 , B01J8/00 , B01J8/18 , B01J8/24
Abstract: The present invention relates to a process and apparatus for withdrawing polymer agglomerates from a fluidised bed polymerisation reactor, the polymerisation reactor comprising a bottom zone having a generally conical shape and no fluidisation grid. The agglomerates are withdrawn by using an agglomerate trap below the bottom zone. A value of a process variable indicative of the content of agglomerates in the agglomerate trap is measured and the opening time of the valves transferring polymer to and from the agglomerate trap is adjusted based on the measured value.
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20.发明申请公开(公告)号：US20210094008A1
公开(公告)日：2021-04-01
申请号：US16499361
申请日：2018-05-30
Applicant: Borealis AG
Inventor： Klaus Nyfors , Erno Elovainio , Vasileios Kanellopoulos , Gunter Weickert , Eric-Jan Prinsen
Abstract: The present invention relates to a process for removing polymer material from a gas-solids olefm polymerization reactor wherein the gas-solids olefm polymerization reactor is connected to the top part of an outlet vessel via a feed pipe wherein the powder surface of discharged polymer material and the barrier gas injection point are situated in the outlet vessel as such to fulfill the following criteria: R′=X/Y≤2.0; and R″=X/D≥1.0; wherein X=Distance between the powder surface and the barrier gas injection point; Y=Distance between the barrier gas injection point and the vessel outlet; and D=Equivalent outlet vessel diameter, an apparatus for continuously removing polymer material comprising a gas-solids olefm polymerization reactor, an outlet vessel and a feed pipe connecting the gas-solids olefm polymerization reactor with the top part of the outlet vessel and the use of said apparatus for polymerizing alpha-olefm homo- or copolymers having alpha-olefin monomer units of from 2 to 12 carbon atoms and for increasing the barrier gas efficiency of the gas-solids olefin reactor to at least 75%.
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