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公开(公告)号：US11149096B2
公开(公告)日：2021-10-19
申请号：US16646606
申请日：2018-11-22
Applicant: Borealis AG
Inventor： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Samuli Zitting
Abstract: 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bottom stream from the second fractionator; characterized in that at least a part of the second overhead stream is withdrawn as a purge stream.
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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：US20200277413A1
公开(公告)日：2020-09-03
申请号：US16646606
申请日：2018-11-22
Applicant: Borealis AG
Inventor： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Samuli Zitting
Abstract: 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 bottom stream to a second fractionator; (F) withdrawing a second overhead stream and a second bottom stream from the second fractionator; characterised in that at least a part of the second overhead stream is withdrawn as a purge stream.
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公开(公告)号：US10759880B2
公开(公告)日：2020-09-01
申请号：US15781733
申请日：2016-12-21
Applicant: Borealis AG
Inventor： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Henry Sleijster , Sameer Vijay , Christof Wurnitsch , Samuli Zitting
IPC: C08F6/12 , C08F2/06 , C08F6/00 , B01D3/14 , B01D3/42 , C08F6/04 , C08F10/02 , C08F10/06 , C08F36/02
Abstract: A process for producing a polymer composition comprising the steps (A) to (M) as recited herein, involving the polymerization, in a polymerization reactor of a first polymer, a first stream thereof being passed into a first separator wherein a first liquid phase comprising the polymer and a first vapor phase coexist; withdrawing a first vapor stream and a first concentrated solution stream comprising the polymer from the first separator, passing at least a part of the first vapor stream to a first fractionator; withdrawing a first overhead stream and a first bottom stream from the first fractionator; recovering at least a part of the first overhead stream as a first recycle stream and passing it to the polymerization reactor; passing the first concentrated solution stream from the first separator to a second separator, wherein a second liquid phase comprising the polymer and a second vapor phase coexist; passing at least a part of the second vapor stream to a second fractionator; withdrawing a second overhead stream and a second bottom stream from the second fractionator; recovering at least a part of the second overhead stream as a second recycle stream and passing it to the polymerization reactor; wherein the mass flow rate of the first recycle stream is at least 80% of the mass flow rate of the first vapor stream and the mass flow rate of the second recycle stream is at least 70% of the mass flow rate of the second vapor stream.
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公开(公告)号：US20180327522A1
公开(公告)日：2018-11-15
申请号：US15776089
申请日：2016-12-21
Applicant: Borealis AG
Inventor： Mohammad Al-Haj Ali , Erik Eriksson , Sameer Vijay , Guhan Mathivanan , Jukka Rasanen , Henry Sleijster , Christof Wurnitsch , Samuli Zitting
CPC classification number: C08F6/12 , B01J8/0015 , C08F6/003 , C08L23/02
Abstract: A process for withdrawing polyolefins from a solution polymerization reactor comprising: providing—a low pressure separator 1,—a washing column 2,—a withdrawal line 3 connecting the upper part of the low pressure separator and the washing column—a condenser 4,—a condenser-line 5 connecting the top part of the washing column and the condenser—optionally a recycle solvent vessel 6—optionally a solvent-vessel-line 7 connecting the condenser with the recycle solvent vessel—a reflux line 8 connecting the condenser and the upper part of the washing column or connecting the recycle solvent vessel and the upper part of the washing column—optionally a circulation line 9 fluidly connected to the middle part of the washing column and recycling line 10—a recycling line 10 connecting the bottom of the washing column and the upper part of the low pressure separator,—optionally a wash recycle heater 11 embedded into the recycling line 10—optionally a heater 12 embedded into the circulation line 9 (a) continuously withdrawing a liquid solution stream from the solution polymerization reactor and passing said liquid solution stream into the first low pressure separator 1; (b) withdrawing a first vapour stream and a first liquid stream from the low pressure separator and passing said first vapour stream via withdrawal line 3 into the washing column (c) withdrawing a second vapour stream from the washing column and feeding it via condenser line 5 to condenser 4 (d) cooling the second vapour stream in condenser 4 so that a part of the second vapour stream condenses thereby producing a condensed second vapour stream and an uncondensed second vapour stream (e) passing the condensed second vapour stream to the upper part of the washing column via reflux line 8 (f) withdrawing a second liquid stream from the washing column and passing at least a part of the second liquid stream to the low pressure separator via recyling line 10 (g) recovering heat from the condenser
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Patent Agency Ranking
公开(公告)号：US20170283562A1
公开(公告)日：2017-10-05
申请号：US15506333
申请日：2015-11-19
Applicant: BOREALIS AG
Inventor： Anh Tuan Tran , Sameer Vijay
CPC classification number: C08J3/124 , B29B9/065 , B29K2023/08 , B29K2105/0094 , B29K2509/08 , B29K2995/0063 , C08J2323/00 , C08J2323/08
Abstract: The present invention deals with a process for producing pellets from olefin copolymers. The process comprises: (i) melting the olefin copolymer in an extruder; (ii) extruding the molten olefin copolymer through a die plate into a pellet water bath in a pelletiser thereby producing strands of the olefin copolymer; (iii) cutting the strands of the olefin copolymer in the pelletiser into pellets; and (iv) drying the pellets. The pellet water in the pelletiser contains from 0.1 to 5% by weight of a colloidal silica based on the weight of the water.
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公开(公告)号：US20250065539A1
公开(公告)日：2025-02-27
申请号：US18718910
申请日：2022-12-22
Applicant: Borealis AG
Inventor： Peter Denifl , Kilian Piettre , Christian Goetzloff , Michael Hettrich-Keller , Doris Machl , Sameer Vijay , Hans-Jürgen Priesters , Oliver Lambertz
Abstract: A mechanical polyolefin recycling process. comprising a particular combination of processing steps in a given order, providing access to highly pure recycled polyolefin grades. having well balanced mechanical and optical properties that are superior to those typically seen in similar recycled polyolefin grades and a mechanical polyolefin recycling apparatus configured for carrying out the mechanical polyolefin recycling process
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公开(公告)号：US11512157B2
公开(公告)日：2022-11-29
申请号：US16768601
申请日：2018-11-22
Applicant: Borealis AG
Inventor： Mohammad Al-Haj Ali , Erik Eriksson , Guhan Mathivanan , Jukka Räsänen , Henry Sleijster , Sameer Vijay , Samuli Zitting
IPC: C08F210/16 , B01D3/14 , B01J19/06 , C08F6/00 , C08F6/04
Abstract: 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.
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公开(公告)号：US11485636B2
公开(公告)日：2022-11-01
申请号：US16971846
申请日：2019-02-22
Applicant: BOREALIS AG
Inventor： Sameer Vijay
Abstract: The invention provides a process for separating hydrogen from a gaseous feed stream in a polymerisation process, comprising the steps i) polymerising an olefin monomer and optionally at least one olefin comonomer, in the presence of a solvent optionally in the presence of hydrogen, so as to form a polymerisation reaction mixture comprising a polyolefin polymer, unreacted monomer(s), solvent and hydrogen; ii) separating said polyolefin polymer from said unreacted monomer(s), solvent and hydrogen; iii) feeding said unreacted monomer(s) and hydrogen to a condenser so as to form said gaseous feed stream; iv) contacting said gaseous feed stream with a hydrogen separating membrane so as to form a hydrogen-rich gaseous stream and a hydrogen-lean gaseous stream.
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公开(公告)号：US10100158B2
公开(公告)日：2018-10-16
申请号：US15506333
申请日：2015-11-19
Applicant: BOREALIS AG
Inventor： Anh Tuan Tran , Sameer Vijay
IPC: C08J3/12 , B29B9/06 , B01J2/30 , B29K23/00 , B29K105/00 , B29K509/08
Abstract: The present invention deals with a process for producing pellets from olefin copolymers. The process comprises: (i) melting the olefin copolymer in an extruder; (ii) extruding the molten olefin copolymer through a die plate into a pellet water bath in a pelletizer thereby producing strands of the olefin copolymer; (iii) cutting the strands of the olefin copolymer in the pelletizer into pellets; and (iv) drying the pellets. The pellet water in the pelletizer contains from 0.1 to 5% by weight of a colloidal silica based on the weight of the water.
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