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公开(公告)号：US20190176118A1
公开(公告)日：2019-06-13
申请号：US16098346
申请日：2017-04-28
Applicant: BOREALIS AG
Inventor： Pauli LESKINEN , Erno ELOVAINIO , Katri NIKKILÄ , Jukka-Pekka PARJANEN , Jani AHO
Abstract: The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (7), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (4); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (4); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (7), wherein the catalyst slurry is transferred by using a valveless piston pump (5) from the catalyst feed vessel (4) into the polymerisation reactor (7); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (4), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel (4) to the reactor (7).
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2.发明申请公开(公告)号：US20200346180A1
公开(公告)日：2020-11-05
申请号：US16765103
申请日：2018-10-25
Applicant: Borealis AG
Inventor： Günter WEICKERT , Eric-Jan PRINSEN , Klaus NYFORS , Erno ELOVAINIO , Vasileios KANELLOPOULOS
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20240301104A1
公开(公告)日：2024-09-12
申请号：US18572402
申请日：2022-06-23
Applicant: BOREALIS AG
Inventor： Matthias HOFF , Joana Elvira KETTNER , Vasileios KANELLOPOULOS , Victor SUMERIN , Jani AHO , Apostolos KRALLIS , Kalle KALLIO , Irfan SAEED , Erno ELOVAINIO
IPC: C08F210/16 , C08L23/08
CPC classification number: C08F210/16 , C08L23/0815 , C08L2205/025 , C08L2308/00
Abstract: The disclosure relates to a process for polymerising olefins in multi stage polymerisation process configuration, comprising a) polymerising in a first polymerisation step first olefin monomer, optionally in the presence of at least one other alpha olefin monomer, in the presence of a polymerisation catalyst so as to form a first polymer component (A), and b) polymerising in a second polymerisation step in gas phase second olefin monomer, optionally in the presence of at least one other alpha olefin comonomer, in the presence of the first polymer component (A) of step a) and an induced swelling agent, so as to for a second polymer component (B), wherein the first polymer component (A) and the second polymer component (B) are produced at production rates meeting a predetermined target weight ratio of the second polymer component (B) to the first polymer component (A), the process comprising the steps of: i) determining a first weight ratio of the second polymer component (B) to the first polymer component (A) in the second polymerisation step, and ii) increasing the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio is less than the predetermined target weight ratio, or iii) decreasing the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio is greater than the predetermined target weight ratio, or iv) maintaining the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio equals the predetermined target weight ratio. The disclosure further relates to use of an induced swelling agent in a gas phase polymerisation step for improving gas phase production split in a multi-stage olefin polymerisation process.
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公开(公告)号：US20240191052A1
公开(公告)日：2024-06-13
申请号：US18555295
申请日：2022-04-13
Applicant: BOREALIS AG
Inventor： Mohammad AL-HAJ ALI , Noureddine AJELLAL , Mubashar SATTAR , Erno ELOVAINIO , Henry SLEIJSTER
CPC classification number: C08J11/08 , B01D5/0057 , B01D11/028 , C08J2300/30 , C08J2323/02
Abstract: A solvent based recycling process for recycling waste polymer material, the waste polymer material comprising at least one polyolefin, the process comprising the steps of obtaining the waste polymer material comprising the at least one polyolefin; contacting the waste polymer material with at least one dissolving solvent yielding a slurry stream of polymer solution and undissolved solids; screening the slurry stream yielding the undissolved solids and a stream of the polymer solution; vapor-liquid separating the stream of the polymer solution into a polymer-lean vapor stream and a polymer-rich condensed stream; recovering the at least one polyolefin from the polymer-rich condensed stream; wherein the at least one dissolving solvent has a boiling point temperature at 1 bar of equal to or more than 70° C.
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公开(公告)号：US20240294681A1
公开(公告)日：2024-09-05
申请号：US18572405
申请日：2022-06-23
Applicant: BOREALIS AG
Inventor： Vasileios KANELLOPOULOS , Joana Elvira KETTNER , Matthias HOFF , Apostolos KRALLIS , Victor SUMERIN , Jani AHO , Kalle KALLIO , Irfan SAEED , Erno ELOVAINIO
IPC: C08F210/16 , C08F2/00 , C08F2/01 , C08F2/34 , C08F2/38 , C08F4/6592
CPC classification number: C08F210/16 , C08F2/001 , C08F2/01 , C08F2/34 , C08F2/38 , C08F4/6592
Abstract: The disclosure relates to a process for polymerising olefins in multi stage polymerisation process configuration, the process comprising a) polymerising in a first polymerisation step first olefin monomer, optionally in the presence of at least one other alpha olefin comonomer, in the presence of a metallocene polymerisation catalyst so as to form a first polymer component (A); and b) transferring the first polymer component (A) into a separation unit to remove low molecule penetrants and to obtain separated solid polyolefin particles of the first polymer component (A*) and c) polymerising in in gas phase in a second polymerisation step second olefin monomer, optionally in the presence of at least one other alpha olefin comonomer in the presence of the separated solid polyolefin particles (A*) of step b), so as to form a second polymer component (B). The disclosure further relates to a method for improving performance of a metallocene polymerisation catalyst in a multi-stage olefin polymerisation, wherein a first polymer component (A) produced in a first polymerisation step is transferred into a separation unit to remove low molecule penetrants and to obtain separated solid polyolefin particles of the first polymer component (A*) prior to transferring the obtained separated solid polyolefin particles of the first polymer component (A*) to a further polymerisation step.
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公开(公告)号：US20240001317A1
公开(公告)日：2024-01-04
申请号：US18254729
申请日：2021-11-04
Applicant: Borealis AG
Inventor： Klaus NYFORS , Jouni KIVELÄ , Mubashar SATTAR , Samuli ZITTING , Erno ELOVAINIO , Mikko LYLYKANGAS , Jan LINDHOLM , Danny COX
CPC classification number: B01J8/0035 , B01J8/002 , B01J8/003 , B01J8/1809 , B01J8/22 , C08F10/00 , B01J2208/0061 , B01J2208/00752
Abstract: The present invention relates to a process for feeding a polymerization catalyst into a polymerization reactor, said process comprising the steps of: (i) forming a catalyst slurry comprising oil and a solid catalyst component in a first catalyst preparation vessel; (ii) transferring the catalyst slurry from the first catalyst preparation vessel to a first catalyst feed vessel; (iii) maintaining the catalyst slurry in the first catalyst feed vessel in a homogeneous state; (iv) withdrawing a portion of the catalyst slurry from the first catalyst feed vessel, preferably continuously withdrawing the catalyst slurry from the first catalyst feed vessel, and introducing the withdrawn portion of the catalyst slurry into a polymerization reactor; wherein the oil has a dynamic viscosity of from 25 to 1500 mPa*s at the conditions within the first catalyst preparation vessel and the first catalyst feed vessel, wherein the catalyst slurry is transferred along a substantially vertical path downwards from the first catalyst feed vessel to the reactor.
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公开(公告)号：US20210370255A1
公开(公告)日：2021-12-02
申请号：US16765090
申请日：2018-10-25
Applicant: Borealis AG
Inventor： Günter WEICKERT , Eric-Jan PRINSEN , Klaus NYFORS , Erno ELOVAINIO , Vasileios KANELLOPOULOS
Abstract: 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.
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