Patents by Inventor Gunter Weickert
Gunter Weickert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11559776Abstract: The present invention relates to a method for improving the cooling capacity of a gas solids olefin polymerization reactor by splitting the fluidization gas and returning part of the fluidization gas to the reactor into the bottom zone of the reactor and another part of the fluidization gas directly into the dense phase 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 of the reactor.Type: GrantFiled: October 25, 2018Date of Patent: January 24, 2023Assignee: BOREALIS AGInventors: Günter Weickert, Eric-Jan Prinsen, Klaus Nyfors, Erno Elovainio, Vasileios Kanellopoulos
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Patent number: 11400429Abstract: The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.Type: GrantFiled: October 25, 2018Date of Patent: August 2, 2022Assignee: BOREALIS AGInventors: Günter Weickert, Eric-Jan Prinsen, Klaus Nyfors, Erno Elovainio, Vasileios Kanellopoulos
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Publication number: 20220177616Abstract: A process for polymerizing olefin monomer(s) in a gas-solids olefin polymerization reactor comprising 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; comprising the following steps: introducing a fluidization gas stream into the bottom zone; polymerizing olefin monomer(s) in the presence of a polymerization catalyst in a dense phase formed by particles of a polymer of the olefin monomer(s) 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; wherein the kinetic energy (EJG) input in the reactor by the jet stream is betweType: ApplicationFiled: April 6, 2020Publication date: June 9, 2022Inventors: Gunter Weickert, Vasileios Kanellopoulos, Eric-Jan Prinsen, Pablo Ivan Aguayo Arellano, Markku Vahteri, Juha Salminen, Jari-Jussi Ruskeeniemi, Ravindra Tupe, Erno Elovainio, Klaus Nyfors
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Publication number: 20210370255Abstract: The present invention relates to a method for improving the cooling capacity of a gas solids olefin polymerization reactor by splitting the fluidization gas and returning part of the fluidization gas to the reactor into the bottom zone of the reactor and another part of the fluidization gas directly into the dense phase 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 of the reactor.Type: ApplicationFiled: October 25, 2018Publication date: December 2, 2021Inventors: Günter WEICKERT, Eric-Jan PRINSEN, Klaus NYFORS, Erno ELOVAINIO, Vasileios KANELLOPOULOS
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Patent number: 11179690Abstract: The present invention relates to a process for removing polymer material from a gas-solids olefin polymerization reactor wherein the gas-solids olefin 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.Type: GrantFiled: May 30, 2018Date of Patent: November 23, 2021Assignee: BOREALIS AGInventors: Klaus Nyfors, Erno Elovainio, Vasileios Kanellopoulos, Gunter Weickert, Eric-Jan Prinsen
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Patent number: 11111324Abstract: 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.Type: GrantFiled: December 15, 2016Date of Patent: September 7, 2021Assignee: Borealis AGInventors: Mohammad Al-Haj Ali, Vasileios Kanellopoulos, Apostólos Krallis, Klaus Nyfors, Pablo Ivan Aguayo Arellano, Gunter Weickert, Eric-Jan Prinsen
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Publication number: 20210094008Abstract: 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.Type: ApplicationFiled: May 30, 2018Publication date: April 1, 2021Inventors: Klaus Nyfors, Erno Elovainio, Vasileios Kanellopoulos, Gunter Weickert, Eric-Jan Prinsen
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Publication number: 20200369806Abstract: 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.Type: ApplicationFiled: December 15, 2016Publication date: November 26, 2020Inventors: Mohammad AL-HAJ ALI, Vasileios KANELLOPOULOS, Apostolos KRALLIS, Klaus NYFORS, Pablo Ivan AGUAYO ARELLANO, Gunter Weickert, Eric-Jan PRINSEN
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Publication number: 20200346180Abstract: The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.Type: ApplicationFiled: October 25, 2018Publication date: November 5, 2020Inventors: Günter WEICKERT, Eric-Jan PRINSEN, Klaus NYFORS, Erno ELOVAINIO, Vasileios KANELLOPOULOS
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Patent number: 10702842Abstract: The present invention deals with a process of polymerising at least one olefin in a fluidised bed in a fluidised bed polymerisation reactor comprising a top zone, a middle zone in direct contact and below, a bottom zone in direct contact with and below the middle zone and wherein the reactor does not comprise a fluidisation grid. The process comprises passing a stream comprising the fluidisation gas and polymer particles into a separation step and withdrawing a stream comprising the polymer particles from the separation step and returning it to the polymerisation reactor. The process comprises adding a support gas stream to the stream comprising the polymer particles downstream of the separation step.Type: GrantFiled: December 21, 2016Date of Patent: July 7, 2020Assignee: BOREALIS AGInventors: Vasileios Kanellopoulos, Klaus Nyfors, Gunter Weickert, Eric-Jan Prinsen
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Patent number: 10450391Abstract: 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.Type: GrantFiled: June 10, 2016Date of Patent: October 22, 2019Assignee: Borealis AGInventors: Vasileios Kanellopoulos, Klaus Nyfors, Pablo Ivan Aguayo Arellano, Gunter Weickert, Eric-Jan Prinsen
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Publication number: 20180369775Abstract: The present invention deals with a process of polymerising at least one olefin in a fluidised bed in a fluidised bed polymerisation reactor comprising a top zone, a middle zone in direct contact and below, a bottom zone in direct contact with and below the middle zone and wherein the reactor does not comprise a fluidisation grid. The process comprises passing a stream comprising the fluidisation gas and polymer particles into a separation step and withdrawing a stream comprising the polymer particles from the separation step and returning it to the polymerisation reactor. The process comprises adding a support gas stream to the stream comprising the polymer particles downstream of the separation step.Type: ApplicationFiled: December 21, 2016Publication date: December 27, 2018Inventors: Vasileios Kanellopoulos, Klaus Nyfors, Gunter Weickert, Eric-Jan Prinsen
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Publication number: 20180155465Abstract: 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.Type: ApplicationFiled: June 10, 2016Publication date: June 7, 2018Inventors: Vasileios KANELLOPOULOS, Klaus NYFORS, Pablo Ivan AGUAYO ARELLANO, Gunter WEICKERT, Eric-Jan PRINSEN
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Patent number: 9192903Abstract: Reactor assembly for the production of polymers including a fluidized bed reactor (1) comprising a bottom zone (5), a middle zone (6) and an upper zone (7), an inlet (8) for the fluidization gas located in the bottom zone (5), an outlet (9) for the fluidization gas located in the upper zone (7); the outlet (9) for the fluidization gas being coupled with the fluidized bed reactor (1) via inlet (8) via a gas circulation line; means for separation of solids from gas (2) being connected to said gas circulation line; the equivalent cross-sectional diameter of the upper zone (7) being monotonically decreasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the middle zone (6) having an essentially constant equivalent cross-sectional diameter with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the equivalent cross-sectional diameter of the bottom zone (5) being monotonically increasing with respect to the flow direction of the flType: GrantFiled: March 2, 2012Date of Patent: November 24, 2015Assignee: BOREALIS AGInventors: Günter Weickert, Erik Eriksson, Michiel Bergstra, Klaus Nyfors
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Patent number: 9192905Abstract: The invention relates to a reactor assembly for the production of polymers including a fluidized bed reactor (1) comprising a bottom zone (5), a middle zone (6) and an upper zone (7), an inlet (8) for the fluidization gas located in the bottom zone (5), an outlet (9) for the fluidization gas located in the upper zone (7); the outlet (9) for the fluidization gas being coupled with the fluidized bed reactor (1) via inlet (8); the equivalent cross-sectional diameter of the bottom zone (5) being monotonically increasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the middle zone (6) having an essentially constant equivalent cross-sectional diameter with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the equivalent cross-sectional diameter of the upper zone (7) being monotonically decreasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; wherein that the ratio of the height ofType: GrantFiled: March 2, 2012Date of Patent: November 24, 2015Assignee: BOREALIS AGInventors: Erik Eriksson, Michiel Bergstra, Klaus Nyfors, Günter Weickert
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Publication number: 20140080991Abstract: The invention relates to a reactor assembly for the production of polymers including a fluidized bed reactor (1) comprising a bottom zone (5), a middle zone (6) and an upper zone (7), an inlet (8) for the fluidization gas located in the bottom zone (5), an outlet (9) for the fluidization gas located in the upper zone (7); the outlet (9) for the fluidization gas being coupled with the fluidized bed reactor (1) via inlet (8); the equivalent cross-sectional diameter of the bottom zone (5) being monotonically increasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the middle zone (6) having an essentially constant equivalent cross-sectional diameter with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the equivalent cross-sectional diameter of the upper zone (7) being monotonically decreasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; wherein that the ratio of the height ofType: ApplicationFiled: March 2, 2012Publication date: March 20, 2014Applicant: BOREALIS AGInventors: Erik Eriksson, Michiel Bergstra, Klaus Nyfors, Günter Weickert
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Publication number: 20140058051Abstract: Reactor assembly for the production of polymers including a fluidized bed reactor (1) comprising a bottom zone (5), a middle zone (6) and an upper zone (7), an inlet (8) for the fluidization gas located in the bottom zone (5), an outlet (9) for the fluidization gas located in the upper zone (7); the outlet (9) for the fluidization gas being coupled with the fluidized bed reactor (1) via inlet (8) via a gas circulation line; means for separation of solids from gas (2) being connected to said gas circulation line; the equivalent cross-sectional diameter of the upper zone (7) being monotonically decreasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the middle zone (6) having an essentially constant equivalent cross-sectional diameter with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the equivalent cross-sectional diameter of the bottom zone (5) being monotonically increasing with respect to the flow direction of the flType: ApplicationFiled: March 2, 2012Publication date: February 27, 2014Applicant: BOREALIS AGInventors: Günter Weickert, Erik Eriksson, Michiel Bergstra, Klaus Nyfors
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Patent number: 8354483Abstract: The invention relates to a reactor system and process for the catalytic polymerization of olefin monomer and optionally comonomer(s), having one or more inlets for olefin monomer, catalyst, optionally for comonomer, chain growth controllers or chain transfer agents, and/or inert gas, an outlet for gas and an outlet for polymerized particles. The reactor system has at least one fluidized bed unit and at least one moving bed unit, wherein the fluidized bed unit has means for maintaining a fluidized bed in the fluidized bed unit and wherein the moving bed unit is provided with an inlet and an outlet which are connected to the fluidized bed unit, wherein the outlet of the moving bed unit is provided with means for displacing metered quantities of polymerized particles from the moving bed unit into the fluidized bed unit, and to the use of such reactor system.Type: GrantFiled: December 23, 2008Date of Patent: January 15, 2013Assignee: Borealis Technology OYInventors: Michiel Bergstra, Erik Eriksson, Gunter Weickert
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Patent number: 8278402Abstract: The invention relates to a reactor system for the catalytic polymerization of olefin monomer and optionally comonomer(s), having one or more inlets for olefin monomer, catalyst, optionally for comonomer, chain growth controllers or chain transfer agents, and/or inert gas, an outlet for gas and an outlet for polymerized particles. The reactor system has at least one fluidized bed unit and at least one moving bed unit, wherein the fluidized bed unit has means for maintaining a fluidized bed in the fluidized bed unit and wherein the moving bed unit is provided with an inlet and an outlet which are directly connected to the fluidized bed unit, wherein the outlet of the moving bed unit is provided with means for pneumatically displacing polymer particles from the moving bed unit into the fluidized bed unit.Type: GrantFiled: December 23, 2008Date of Patent: October 2, 2012Assignee: Borealis Technology OyInventors: Michiel Bergstra, Erik Eriksson, Gunter Weickert
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Publication number: 20100273971Abstract: The invention relates to a reactor system for the catalytic polymerization of olefin monomer and optionally comonomer(s), having one or more inlets for olefin monomer, catalyst, optionally for comonomer, chain growth controllers or chain transfer agents, and/or inert gas, an outlet for gas and an outlet for polymerized particles. The reactor system has at least one fluidized bed unit and at least one moving bed unit, wherein the fluidized bed unit has means for maintaining a fluidized bed in the fluidized bed unit and wherein the moving bed unit is provided with an inlet and an outlet which are directly connected to the fluidized bed unit, wherein the outlet of the moving bed unit is provided with means for pneumatically displacing polymer particles from the moving bed unit into the fluidized bed unit.Type: ApplicationFiled: December 23, 2008Publication date: October 28, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Michiel Bergstra, Erik Eriksson, Gunter Weickert