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公开(公告)号：US20190337190A1
公开(公告)日：2019-11-07
申请号：US16423829
申请日：2019-05-28
发明人： Peter Kruempel , Harald Prang , Reinhard Kuehl , Elke Damm
IPC分类号： B29B7/72 , B29B7/00 , B29B9/06 , B29B7/90 , B29B7/88 , B29B7/48 , B29C48/285 , G05D11/13 , B29B7/42 , B29B7/60 , B29C48/04 , C08J3/22 , C08K3/04 , B29C48/92 , C08J3/20 , B29C48/00 , B29B9/12
摘要： A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.
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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
发明人： Harald Prang , Suresh Babu Vatti , Peter Rohrbach , Mudit Ashtana
CPC分类号： 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
摘要： 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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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
发明人： Peter Rohrbach , Jürgen Perzlmeier , Elke Damm , Harald Prang
摘要： 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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公开(公告)号：US09738735B1
公开(公告)日：2017-08-22
申请号：US15502376
申请日：2015-08-06
发明人： Reinhard Kuehl , Harald Prang , Rodrigo Carvajal , Elke Damm , Phil Pyman
CPC分类号： C08F10/02 , B01F3/04531 , B01F7/00633 , B01F7/22 , B01F2215/0422 , B01F2215/0431 , B01F2215/0481 , B01J4/002 , B01J8/224 , B01J8/226 , B01J19/0066 , B01J19/18 , B01J19/1875 , B01J2208/00902 , C08F2/01 , C08F2/18
摘要： The present disclosure relates to a process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins. In some embodiments, the polymerization is carried out in a cylindrical polymerization reactor equipped with an agitator for mixing the contents of the reactor and inducing a flow of the slurry, the ethylene is fed into the reactor by an ethylene injection system comprising one or more injection nozzles which project through the bottom reactor head or through the reactor wall and extend from 0.02-0.5 times the inner diameter D into the reactor, and the ethylene exits the injection nozzle with an exit velocity from 10-200 m/s.
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5.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
发明人： Peter Rohrbach , Jürgen Perzlmeier , Mudit Ashtana , Harald Prang , Elke Damm
IPC分类号： C08F210/16 , C08F2/01 , C08F2/18 , C08F210/08
摘要： 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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公开(公告)号：US20190339007A1
公开(公告)日：2019-11-07
申请号：US16076198
申请日：2017-02-14
IPC分类号： F26B3/084 , B01J8/00 , B01J8/26 , B01J8/18 , B01J8/36 , F26B21/14 , C08F6/24 , C08F6/00 , C08F10/02
摘要： A method for preparing a dried powder is provided. The facility includes a first drying chamber having a heating element and a second drying chamber. A mixture of powder and diluent is introduced into the first drying chamber. A pre-dried powder is transferred from the first drying chamber into the second drying chamber. A dried powder, including a recirculated amount of powder and a discharge amount of powder, is formed in the second drying chamber. The recirculated amount of the dried powder is transferred by a conveyor device from the second drying chamber into the first drying chamber. The discharge amount of the dried powder is discharged from the second drying chamber.
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公开(公告)号：US11104036B2
公开(公告)日：2021-08-31
申请号：US16423829
申请日：2019-05-28
发明人： Peter Kruempel , Harald Prang , Reinhard Kuehl , Elke Damm
IPC分类号： B29B7/42 , B29B7/72 , B29C48/04 , B29C48/00 , B29C48/92 , B29C48/285 , C08J3/20 , B29B9/06 , G05D11/13 , B29B7/60 , B29B7/00 , B29B7/48 , B29B7/88 , C08J3/22 , C08K3/04 , B29B7/90 , B29B9/12 , B29C48/03 , B29B7/38 , B29K23/00 , B29K105/16 , B29K507/04
摘要： A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.
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公开(公告)号：US10788262B2
公开(公告)日：2020-09-29
申请号：US16076198
申请日：2017-02-14
IPC分类号： F26B3/084 , B01J8/00 , B01J8/18 , B01J8/26 , B01J8/36 , C08F6/00 , C08F6/24 , C08F10/02 , F26B21/14 , C08F2/14 , C08L23/06
摘要： A method for preparing a dried powder is provided. The facility includes a first drying chamber having a heating element and a second drying chamber. A mixture of powder and diluent is introduced into the first drying chamber. A pre-dried powder is transferred from the first drying chamber into the second drying chamber. A dried powder, including a recirculated amount of powder and a discharge amount of powder, is formed in the second drying chamber. The recirculated amount of the dried powder is transferred by a conveyor device from the second drying chamber into the first drying chamber. The discharge amount of the dried powder is discharged from the second drying chamber.
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公开(公告)号：US20170341266A1
公开(公告)日：2017-11-30
申请号：US15532274
申请日：2015-12-03
发明人： Peter Kruempel , Harald Prang , Reinhard Kuehl , Elke Damm
IPC分类号： B29B7/72 , B29B9/12 , B29B7/42 , C08J3/20 , B29B7/00 , B29B9/06 , B29B7/90 , C08K3/04 , B29B7/60 , B29K507/04
CPC分类号： B29B7/728 , B29B7/005 , B29B7/007 , B29B7/38 , B29B7/42 , B29B7/48 , B29B7/603 , B29B7/88 , B29B7/90 , B29B9/06 , B29B9/065 , B29B9/12 , B29C48/022 , B29C48/03 , B29C48/04 , B29C48/286 , B29C48/288 , B29C48/298 , B29C48/92 , B29C2948/92104 , B29C2948/926 , B29C2948/92828 , B29K2023/06 , B29K2023/065 , B29K2105/16 , B29K2507/04 , C08J3/203 , C08J3/22 , C08J2323/06 , C08J2323/08 , C08K3/04 , G05D11/132
摘要： A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.
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