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公开(公告)号：US12090474B2
公开(公告)日：2024-09-17
申请号：US17766815
申请日：2020-10-21
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： Kevin W. Lawson , Brett A. Smith , Jason M. Reverendo
CPC classification number: B01J8/24 , B01J8/003 , B01J8/004 , B01J8/1854 , B01J2208/00761
Abstract: A fluidized reactor system includes a reactor containing a fluidized bed situated above a distributor plate arranged within the reactor, a fluidizing gas fed into the fluidized bed via the distributor plate to cause uniform fluidization of the fluidized bed and promote creation of solid polymeric granules, and a valve assembly penetrating a sidewall of the reactor to remove a mixture of the fluidizing gas and the solid polymeric granules from the fluidized bed. The valve assembly is coupled to the sidewall at a downward angle relative to the sidewall such that an upward-facing opening of the valve assembly extends into the fluidized bed.
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公开(公告)号：US20200231710A1
公开(公告)日：2020-07-23
申请号：US15759002
申请日：2016-08-19
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jay L. Reimers , Kevin W. Lawson , Peijun Jiang , Gabor Kiss
Abstract: This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.
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公开(公告)号：US20200231719A1
公开(公告)日：2020-07-23
申请号：US16634904
申请日：2018-06-06
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Kevin W. Lawson
Abstract: Methods for separating gaseous components, such as unreacted hydrocarbon monomer and/or solvent, from polyolefin solids are provided. The methods include flowing a first stream including polyolefin solids and gaseous unreacted hydrocarbon monomer and/or solvent through a portion of a gas-solid separation vessel having a volume sufficient so that polyolefin solids present in the first stream have an increased residence time within the gas-solid separation vessel to separate gaseous unreacted hydrocarbon monomer and/or solvent from the polyolefin solids to produce a second stream including polyolefin solids substantially free of gaseous unreacted hydrocarbon monomer and/or solvent and a third stream including the gaseous unreacted hydrocarbon monomer and/or solvent. Systems for carrying out such methods are also provided.
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公开(公告)号：US09605096B2
公开(公告)日：2017-03-28
申请号：US14296616
申请日：2014-06-05
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Todd S. Edwards , Kevin W. Lawson
IPC: C08F210/06 , C08F2/00 , C08F10/00 , C08F110/06
CPC classification number: C08F210/06 , C08F2/00 , C08F10/00 , C08F110/06 , C08F2500/04 , C08F2500/12
Abstract: A method is provided for polymerizing an olefin monomer in a reactor with a highly active polyolefin polymerization catalyst system. The method includes introducing a catalyst system comprising a catalyst and a catalyst activator into the reactor containing the olefin monomer with less than 10 seconds or no pre-contacting time of the catalyst and the catalyst activator prior to introducing the catalyst and the catalyst activator into the reactor. The catalyst system may have a standard adjusted catalyst activity of greater than 10 gPgcat−1hr−1.
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公开(公告)号：US11279775B2
公开(公告)日：2022-03-22
申请号：US15759002
申请日：2016-08-19
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jay L. Reimers , Kevin W. Lawson , Peijun Jiang , Gabor Kiss
Abstract: This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.
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Patent Agency Ranking
公开(公告)号：US20180237555A1
公开(公告)日：2018-08-23
申请号：US15749818
申请日：2016-07-25
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Christopher G. Bauch , Todd S. Edwards , Daniel L. Bilbao , Kevin W. Lawson , Blu E. Englehorn
IPC: C08F8/04 , C08F210/02 , C08F210/06 , C08F210/16 , C08F4/642 , C08F4/622 , C08F110/06 , C08F2/38
CPC classification number: C08F8/04 , C08F2/38 , C08F4/6226 , C08F4/642 , C08F110/06 , C08F210/02 , C08F210/06 , C08F210/16 , C08F2500/12 , C08F2800/10 , C08L23/12 , C08F2420/02 , C08F2/001 , C08L23/16
Abstract: Disclosed is a method of reducing and/or regulating the level of hydrogen in a polymerization reactor comprising contacting a first feed comprising a first amount of hydrogen with a hydrogenation catalyst prior to entering a polymerization reactor to form a second feed; then contacting the second feed having a second amount of hydrogen with monomers and a polymerization catalyst in a polymerization reactor to form a polymer. The first and second feeds may reside in a feed line from one reactor to another, a monomer feed line to the reactor, or in a recycle line to and from the same reactor.
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公开(公告)号：US20180127519A1
公开(公告)日：2018-05-10
申请号：US15727925
申请日：2017-10-09
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Kevin W. Lawson
Abstract: A method for controlling the temperature of the inner surface of a transfer line dryer, and thus controlling the temperature of a polymer product flowing through the transfer line dryer, is explained. Also provided is a transfer line dryer apparatus that is useful for implementing the disclosed method.
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公开(公告)号：US20220162348A1
公开(公告)日：2022-05-26
申请号：US17669055
申请日：2022-02-10
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jay L. Reimers , Kevin W. Lawson , Peijun Jiang , Gabor Kiss
Abstract: This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.
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公开(公告)号：US10934372B2
公开(公告)日：2021-03-02
申请号：US16315830
申请日：2017-06-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Christopher G. Bauch , Blu E. Englehorn , Kevin W. Lawson , Todd S. Edwards , Keith W. Trapp
Abstract: A process for reducing the level of hydrogen in certain polymerization effluent and recycle streams containing unreacted propylene monomers and hydrogen by contacting the streams with a hydrogenation catalyst so as to convert at least part of the propylene to the corresponding alkane. The process is particularly applicable to the effluent from a slurry polymerization reactor which has been used to produce a polypropylene homopolymer or copolymer having a first molecular weight and at least part of the effluent is to be supplied to a slurry polymerization reactor to produce a polypropylene homopolymer or copolymer having a second, higher molecular weight.
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公开(公告)号：US10556971B2
公开(公告)日：2020-02-11
申请号：US15727925
申请日：2017-10-09
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Kevin W. Lawson
Abstract: A method for controlling the temperature of the inner surface of a transfer line dryer, and thus controlling the temperature of a polymer product flowing through the transfer line dryer, is explained. Also provided is a transfer line dryer apparatus that is useful for implementing the disclosed method.
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