Patents by Inventor Chung-Ming Chi
Chung-Ming Chi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240001352Abstract: Described is a catalyst system useful in the production of bisphenol-A comprises (a) an acidic heterogeneous catalyst comprising amorphous silica having organosulfonic acid groups chemically bonded thereto, wherein the catalyst has a pKa value of 3.5 or less; and (b) a catalyst promoter comprising at least one organic sulfur-containing compound.Type: ApplicationFiled: November 12, 2020Publication date: January 4, 2024Inventors: Mariam Salazar RODRIGUEZ, Chung-Ming CHI
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Patent number: 10899683Abstract: A process for producing ethylbenzene is described in which benzene and ethylene are supplied to an alkylation reaction zone. Also added to the alkylation reaction zone is a C3+ olefin in an amount of at least 200 ppm by weight of the ethylene supplied to the alkylation reaction zone. The benzene, ethylene and C3+ olefin are contacted with an alkylation catalyst in the alkylation reaction zone to alkylate at least part of the benzene and produce an alkylation effluent comprising ethylbenzene, polyethylated benzene and at least one mono-C3+ alkyl benzene. The alkylation effluent is separated into a first product fraction comprising ethylbenzene and a second fraction comprising polyethylated benzene and the at least one mono-C3+ alkyl benzene. The second fraction is then contacted with benzene in the presence of a transalkylation catalyst to convert at least part of the polyethylated benzene to ethylbenzene and produce a transalkylation effluent.Type: GrantFiled: February 17, 2016Date of Patent: January 26, 2021Assignee: BADGER LICENSING LLCInventors: Brian Maerz, Chung-Ming Chi, Raghavender Bhoomi
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Publication number: 20190016647Abstract: A process for producing ethylbenzene is described in which benzene and ethylene are supplied to an alkylation reaction zone. Also added to the alkylation reaction zone is a C3+ olefin in an amount of at least 200 ppm by weight of the ethylene supplied to the alkylation reaction zone. The benzene, ethylene and C3+ olefin are contacted with an alkylation catalyst in the alkylation reaction zone to alkylate at least part of the benzene and produce an alkylation effluent comprising ethylbenzene, polyethylated benzene and at least one mono-C3+ alkyl benzene. The alkylation effluent is separated into a first product fraction comprising ethylbenzene and a second fraction comprising polyethylated benzene and the at least one mono-C3+ alkyl benzene. The second fraction is then contacted with benzene in the presence of a transalkylation catalyst to convert at least part of the polyethylated benzene to ethylbenzene and produce a transalkylation effluent.Type: ApplicationFiled: February 17, 2016Publication date: January 17, 2019Applicant: Badger Licensing LLCInventors: Brian MAERZ, Chung-Ming CHI, Raghavender BHOOMI
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Patent number: 9255053Abstract: In a method of treating a residue stream from the production of bisphenol-A, the residue stream is contacted with an aqueous solution of a base under conditions effective to hydrolyze at least part of said residue stream into acetone and phenol and produce an effluent stream. Acetone is recovered from the effluent stream to produce a phenol-containing mixed phase stream which is substantially free of acetone and which contains water and unhydrolyzed heavy organic compounds. The phenol-containing mixed phase stream is then treated with a water-immiscible organic solvent to extract phenol and unhydrolyzed heavy organic compounds into said solvent and produce an organic phase containing the solvent, phenol and unhydrolyzed heavy aromatic compounds and an aqueous phase with reduced concentrations of phenol and unhydrolyzed heavy organic compounds. At least part of the phenol and the organic solvent are subsequently recovered from the organic phase.Type: GrantFiled: June 4, 2012Date of Patent: February 9, 2016Assignee: BADGER LICENSING LLCInventors: David P. Palmer, Steven D. Evitt, Stephen W. Fetsko, Chung-Ming Chi
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Patent number: 8445738Abstract: A process is described for producing cumene comprising contacting a feed stream comprising benzene and a further feed stream comprising isopropanol or a mixture of isopropanol and propylene in the presence of an alkylation catalyst comprising at least a molecular sieve of the MCM-22, family in an alkylation zone under alkylation conditions of at least partial liquid phase and with a water concentration in the liquid phase of at least 50 ppm to react at least part of said isopropanol and benzene to produce an effluent stream containing cumene.Type: GrantFiled: September 23, 2009Date of Patent: May 21, 2013Assignee: Badger Licensing LLCInventors: Shyh-Yuan Hwang, Dana E. Johnson, Joseph C. Peters, Chung-Ming Chi, Kevin J. Fallon, Francis A. Demers
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Patent number: 8431749Abstract: In a method of recovering phenol and acetone from a feed stream containing bisphenol-A and isomers thereof, the feed stream is contacted with water and a source of hydroxyl ions under conditions effective to decompose at least part of said bisphenol-A and isomers thereof to phenol and acetone. The conditions include a temperature of about 150° C. to about 300° C., a pressure sufficient to keep the water substantially in the liquid phase at said temperature, and a molar ratio of hydroxyl ions to hydroxyphenyl groups in the residue stream from about 0.3:1 to about 0.9:1.Type: GrantFiled: June 6, 2011Date of Patent: April 30, 2013Assignee: Badger Licensing LLCInventors: David P. Palmer, Steven D. Evitt, Stephen W. Fetsko, Chung-Ming Chi
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Publication number: 20120310014Abstract: In a method of treating a residue stream from the production of bisphenol-A, the residue stream is contacted with an aqueous solution of a base under conditions effective to hydrolyze at least part of said residue stream into acetone and phenol and produce an effluent stream. Acetone is recovered from the effluent stream to produce a phenol-containing mixed phase stream which is substantially free of acetone and which contains water and unhydrolyzed heavy organic compounds. The phenol-containing mixed phase stream is then treated with a water-immiscible organic solvent to extract phenol and unhydrolyzed heavy organic compounds into said solvent and produce an organic phase containing the solvent, phenol and unhydrolyzed heavy aromatic compounds and an aqueous phase with reduced concentrations of phenol and unhydrolyzed heavy organic compounds. At least part of the phenol and the organic solvent are subsequently recovered from the organic phase.Type: ApplicationFiled: June 4, 2012Publication date: December 6, 2012Applicant: BADGER LICENSING LLCInventors: David P. PALMER, Steven D. EVITT, Stephen W. FETSKO, Chung-Ming CHI
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Publication number: 20120310015Abstract: In a method of recovering phenol and acetone from a feed stream containing bisphenol-A and isomers thereof, the feed stream is contacted with water and a source of hydroxyl ions under conditions effective to decompose at least part of said bisphenol-A and isomers thereof to phenol and acetone. The conditions include a temperature of about 150° C. to about 300° C., a pressure sufficient to keep the water substantially in the liquid phase at said temperature, and a molar ratio of hydroxyl ions to hydroxyphenyl groups in the residue stream from about 0.3:1 to about 0.9:1.Type: ApplicationFiled: June 6, 2011Publication date: December 6, 2012Applicant: BADGER LICENSING LLCInventors: David P. PALMER, Steven D. EVITT, Stephen W. FETSKO, Chung-Ming CHI
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Patent number: 8039679Abstract: An improved process is provided for producing bisphenol-A (BPA) comprising steps of (1) contacting benzene and a C3 alkylating agent to produce an alkylation effluent comprising cumene; (2) oxidizing the cumene to produce the corresponding hydroperoxide; (3) cleaving the hydroperoxide to produce product comprising phenol and acetone; (4) reacting acetone with phenol to form a reaction product stream comprising crude bisphenol-A product; (5) distilling the reaction product stream, while sending downstream to a BPA-phenol adduct crystallization and purification step, the resulting concentrated BPA phenolic feed stream; (6) producing BPA-phenol adduct crystals by crystallization of the concentrated BPA phenolic feed stream; (7) separating the BPA-phenol adduct crystals by solid-liquid separationr; (8) cracking a stream comprising at least a portion of said final mother liquor to recover a product; and (9) recovering and feeding the phenol product of step (8) to step (4) and/or step (7).Type: GrantFiled: August 24, 2006Date of Patent: October 18, 2011Assignee: Badger Licensing LLCInventors: Steven D. Evitt, Stephen W. Fetsko, Chung-Ming Chi
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Publication number: 20110201858Abstract: In a process for producing cumene from acetone and benzene, a feed stream comprising acetone is contacted with hydrogen in the presence of a hydrogenation catalyst in a first reaction zone under hydrogenation conditions sufficient to convert at least part of the acetone to isopropanol and produce a first liquid effluent stream rich in isopropanol and a first vapor stream rich in unreacted hydrogen. Benzene is then added to at least part of the first liquid effluent stream, without intermediate purification of the first liquid effluent stream, and optionally to at least part of the first vapor stream, to form a second feed stream.Type: ApplicationFiled: September 23, 2009Publication date: August 18, 2011Applicant: BADGER LICENSING LLCInventors: Shyh-Yuan Henry Hwang, Dana E. Johnson, Joseph C. Peters, Chung-Ming Chi, Kevin J. Fallon, Francis A. Demers
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Publication number: 20110178342Abstract: A process is described for producing cumene comprising contacting a feed stream comprising benzene and a further feed stream comprising isopropanol or a mixture of isopropanol and propylene in the presence of an alkylation catalyst comprising at least a molecular sieve of the MCM-22 family in an alkylation zone under alkylation conditions of at least partial liquid phase and with a water concentration in the liquid phase of at least 50 ppm to react at least part of said isopropanol and benzene to produce an effluent stream containing cumene.Type: ApplicationFiled: September 23, 2009Publication date: July 21, 2011Applicant: BADGER LICENSING LLCInventors: Shyh-Yuan Henry Hwang, Dana E. Johnson, Joseph C. Peters, Chung-Ming Chi, Kevin J. Fallon, Francis A. Demers
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Patent number: 7858830Abstract: An improved process for recovering phenol from a bisphenol-A residue stream by reconfiguring the distillation column and the cracking reactor in a way that separates the reboil/distillation heat load and the cracking heat load, so that separate heat sources are used.Type: GrantFiled: October 28, 2008Date of Patent: December 28, 2010Assignee: Badger Licensing LLCInventors: Steven Evitt, Chung-Ming Chi, Marshall S. Lee, David Palmer
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Publication number: 20100268008Abstract: Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.Type: ApplicationFiled: July 6, 2010Publication date: October 21, 2010Inventors: Shyh-Yuan Hwang, Maruti Bhandarkar, Chung-Ming Chi, Waheed Mukaddam, Frank Demers, Richard F. Guarino, Dana E. Johnson
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Patent number: 7799961Abstract: A process for producing an alkylated aromatic compound from polyalkylated aromatic compound(s) having bi-alkylated aromatic compound(s) and tri-alkylated aromatic compound(s), comprising the step of contacting alkylatable aromatic compound(s) with the polyalkylated aromatic compound(s) at a transalkylation condition in the presence of a transalkylation catalyst. The transalkylation catalyst has high activity sufficient to achieve a ratio of bi-alkylated aromatic compound(s) conversion over tri-alkylated aromatic compound(s) conversion in a range of from about 0.5 to about 2.5.Type: GrantFiled: February 24, 2006Date of Patent: September 21, 2010Assignees: ExxonMobil Chemical Patents Inc., Stone & Webster, Inc.Inventors: Michael C. Clark, Vijay Nanda, Carlos N. Lopez, Brian Maerz, Chung-Ming Chi
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Patent number: 7777087Abstract: A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into the first alkylation reaction zone. The first and second alkylation reaction zones are operated under conditions of temperature and pressure effective to cause alkylation of the aromatic compound with the alkene in the presence of the alkylation catalyst, the temperature and pressure being such that the aromatic compound is at least partly in the liquid phase. The alkylation catalyst in the first alkylation reaction zone, which may be a reactor guard bed, has more acid sites per unit volume of catalyst than the alkylation catalyst in the second reaction zone.Type: GrantFiled: November 23, 2009Date of Patent: August 17, 2010Assignees: ExxonMobil Chemical Patents Inc., Stone & Webster, Inc.Inventors: Michael C. Clark, Vijay Nanda, Chung-Ming Chi, Maruti Bhandarkar, Brian Maerz, Matthew J. Vincent
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Patent number: 7777086Abstract: Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.Type: GrantFiled: February 27, 2003Date of Patent: August 17, 2010Assignee: Stone & Webster, Inc.Inventors: Shyh-Yuan Hwang, Maruti Bhandarkar, Chung-Ming Chi, Waheed Mukaddam, Frank Demers, Richard F. Guarino, Dana E Johnson
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Patent number: 7745676Abstract: A process is described for producing an alkylaromatic compound, in which a first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into a first alkylation reaction zone comprising a first alkylation catalyst. The first alkylation reaction zone is operated under conditions effective to cause alkylation of the alkylatable aromatic compound by the alkene to produce said alkylaromatic compound, the conditions being such that the alkylatable aromatic compound is at least predominantly in the vapor phase. A first effluent comprising the alkylaromatic compound and unreacted alkylatable aromatic compound is withdrawn from the first alkylation reaction zone and at least part of the unreacted alkylatable aromatic compound is treated to remove catalyst poisons therefrom and produce a treated unreacted alkylatable aromatic stream.Type: GrantFiled: July 30, 2007Date of Patent: June 29, 2010Assignees: ExxonMobil Chemical Patents Inc., Stone & Webster, Inc.Inventors: Michael C. Clark, Vijay Nanda, Maruti Bhandarkar, Joseph C. Peters, Chung-Ming Chi, Brian Maerz
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Publication number: 20100105960Abstract: An improved process for recovering phenol from a bisphenol-A residue stream by reconfiguring the distillation column and the cracking reactor in a way that separates the reboil/distillation heat load and the cracking heat load, so that separate heat sources are used.Type: ApplicationFiled: October 28, 2008Publication date: April 29, 2010Applicant: BADGER LICENSING LLCInventors: Steven EVITT, Chung-Ming CHI, Marshall S. LEE, David PALMER
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Publication number: 20100069693Abstract: A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into the first alkylation reaction zone. The first and second alkylation reaction zones are operated under conditions of temperature and pressure effective to cause alkylation of the aromatic compound with the alkene in the presence of the alkylation catalyst, the temperature and pressure being such that the aromatic compound is at least partly in the liquid phase. The alkylation catalyst in the first alkylation reaction zone, which may be a reactor guard bed, has more acid sites per unit volume of catalyst than the alkylation catalyst in the second reaction zone.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Inventors: Michael C. Clark, Vijay Nanda, Chung-Ming Chi, Maruti Bhamdarkar, Brian Maerz, Matthew J. Vincent
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Patent number: 7645913Abstract: A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into the first alkylation reaction zone. The first and second alkylation reaction zones are operated under conditions of temperature and pressure effective to cause alkylation of the aromatic compound with the alkene in the presence of the alkylation catalyst, the temperature and pressure being such that the aromatic compound is at least partly in the liquid phase. The alkylation catalyst in the first alkylation reaction zone, which may be a reactor guard bed, has more acid sites per unit volume of catalyst than the alkylation catalyst in the second reaction zone.Type: GrantFiled: January 19, 2007Date of Patent: January 12, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael C. Clark, Vijay Nanda, Chung-Ming Chi, Maruti Bhandarkar, Brian Maerz, Matthew J. Vincent