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1.发明申请公开(公告)号：US20220227903A1
公开(公告)日：2022-07-21
申请号：US17614684
申请日：2020-05-28
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Jürgen Perzlmeier , Mudit Ashtana , Harald Prang , Elke Damm
IPC: C08F210/16 , C08F2/01 , C08F2/18 , C08F210/08
Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, drying the wet ethylene polymer particles by a gas stream and forming a gas stream carrying a hydrocarbon load, and thereafter separating the hydrocarbon load from the gas stream and thereby forming a liquid hydrocarbon recover stream, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor and a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, wherein a first part of the hydrocarbon recover stream is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
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2.发明授权公开(公告)号：US12221500B2
公开(公告)日：2025-02-11
申请号：US17614684
申请日：2020-05-28
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Jürgen Perzlmeier , Mudit Ashtana , Harald Prang , Elke Damm
IPC: C08F210/16 , C08F2/01 , C08F2/18 , C08F210/08
Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, drying the wet ethylene polymer particles by a gas stream and forming a gas stream carrying a hydrocarbon load, and thereafter separating the hydrocarbon load from the gas stream and thereby forming a liquid hydrocarbon recover stream, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor and a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, wherein a first part of the hydrocarbon recover stream is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
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3.发明申请公开(公告)号：US20220220233A1
公开(公告)日：2022-07-14
申请号：US17614708
申请日：2020-05-28
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Jürgen Perzlmeier , Elke Damm , Harald Prang
Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor, a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, and a wax removal unit operated by direct steam distillation for producing a gaseous hydrocarbon/steam mixture which is condensed and then separated into an aqueous phase and a hydrocarbon phase, wherein a first part of the hydrocarbon phase is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
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Patent Agency Ranking
公开(公告)号：US20210130506A1
公开(公告)日：2021-05-06
申请号：US16473985
申请日：2018-01-02
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Juergen Perzlmeier
Abstract: A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
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公开(公告)号：US09650454B2
公开(公告)日：2017-05-16
申请号：US15309158
申请日：2015-05-13
Applicant: Basell Polyolefine GmbH
Inventor： Harald Prang , Suresh Babu Vatti , Peter Rohrbach , Mudit Ashtana
CPC classification number: C08F110/02 , B01J19/006 , B01J19/18 , B01J19/1862 , B01J2219/0009 , B01J2219/00094 , B01J2219/00765 , B01J2219/00768 , B01J2219/0077 , C08F210/16 , C08L23/0815 , C08L2205/025 , C08F210/08 , C08F2/001
Abstract: A slurry polymerization process comprising polymerizing monomers in a reactor comprising baffles, a first slurry feed line for returning cooled slurry from a cooler and optionally a second slurry feed line for transferring reactor slurry from a previous reactor of a cascade of polymerization reactors, wherein the baffle top, the first slurry feed line discharge end and the second slurry feed line end are located below the reactor liquid level.
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6.发明授权公开(公告)号：US12240923B2
公开(公告)日：2025-03-04
申请号：US17614708
申请日：2020-05-28
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Jürgen Perzlmeier , Elke Damm , Harald Prang
IPC: C08F2/00 , B01D3/14 , B01D3/38 , B01D17/04 , C08F10/02 , C08F110/00 , C08F210/16
Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor, a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, and a wax removal unit operated by direct steam distillation for producing a gaseous hydrocarbon/steam mixture which is condensed and then separated into an aqueous phase and a hydrocarbon phase, wherein a first part of the hydrocarbon phase is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
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7.发明申请公开(公告)号：US20230133399A1
公开(公告)日：2023-05-04
申请号：US17912618
申请日：2021-03-19
Applicant: Basell Polyolefine GmbH
Inventor： Reinhard Kuehl , Volker Dolle , Peter Rohrbach , Elke Damm
Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into ethylene polymer particles and mother liquor, transferring a first part of the mother liquor into a work-up section including an evaporation unit for producing a wax-depleted portion of the mother liquor, wherein a protic agent is added to the part of the mother liquor which is transferred into the work-up section, and recycling a first part of the wax-depleted portion of the mother liquor to the polymerization reactor or the series of polymerization reactors.
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公开(公告)号：US11525017B2
公开(公告)日：2022-12-13
申请号：US16473985
申请日：2018-01-02
Applicant: Basell Polyolefine GmbH
Inventor： Peter Rohrbach , Juergen Perzlmeier
Abstract: A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
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