Patents by Inventor Ling Jiao
Ling Jiao 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: 20240101913Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.Type: ApplicationFiled: December 29, 2021Publication date: March 28, 2024Applicant: CHEVRON U.S.A. INC.Inventors: Ling JIAO, Bi-Zheng ZHAN, Don BUSHEE, Theodorus Ludovicus Michael MAESEN, Hye-Kyung TIMKEN, Richard DUTTA, Jay PAREKH
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Publication number: 20230001383Abstract: A silica-alumina based composite material for making hydroprocessing catalysts, is disclosed. The silica-alumina composite material generally comprises at least two silica-aluminas, the first being a modified first silica-alumina, and the second being a second silica-alumina that is unmodified or modified. The first silica-alumina is modified to comprise silica and alumina domains and a silica-alumina interphase. The second silica-alumina may also be modified at the same time or separately to comprise silica and alumina domains and a silica-alumina interphase. The first silica-alumina and the second silica-alumina differ in one or more physical and/or chemical characteristics, e.g., the ratio of silica to alumina, surface area, pore size, pore volume, silica domain size, or alumina domain size. The invention can be used for making catalyst base materials and catalysts useful for upgrading hydrocarbon feedstocks to produce fuels, lubricants, chemicals and other hydrocarbonaceous compositions.Type: ApplicationFiled: November 4, 2020Publication date: January 5, 2023Inventors: Ann LIANG, Trenton J. OTTO, Jifei JIA, Ling JIAO, Bao Q. LE, Kaustav CHAUDHURI, Bi-Zeng ZHAN
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Publication number: 20220204873Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.Type: ApplicationFiled: December 30, 2020Publication date: June 30, 2022Applicant: Chevron U.S.A. Inc.Inventors: Ling Jiao, Bi-Zeng Zhan, Don Bushee, Theodorus Ludovicus Michael Maesen, Hye-Kyung Timken, Richard Dutta, Jay Parekh
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Patent number: 9040446Abstract: A method for preparing an improved slurry catalyst for the upgrade of heavy oil feedstock is provided. In one embodiment, the process comprises: sulfiding at least a metal precursor solution with at least a sulfiding agent forming a sulfided Group VIB catalyst precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution; and mixing the catalyst precursor with a hydrocarbon diluent to form the slurry catalyst composition. The slurry catalyst prepared therefrom has a BET total surface area of at least 100 m2/g, a total pore volume of at least 0.5 cc/g and a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter.Type: GrantFiled: December 20, 2011Date of Patent: May 26, 2015Assignee: Chevron U.S.A. Inc.Inventors: Joseph V. Nguyen, Julie Chabot, Ling Jiao, Christopher Paul Dunckley, Shuwu Yang, Erin P. Maris, Oleg Mironov, Bruce Edward Reynolds, Alexander E. Kuperman
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Patent number: 8809222Abstract: An improved process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, high shear mixing is employed to generate an emulsion containing droplets of metal precursor in oil with droplet sizes ranging from 0.1 to 300 ?m. The emulsion is subsequently sulfided with a sulfiding agent, or in-situ in a heavy oil feedstock to form a slurry catalyst. The in-situ sulfidation in heavy oil is under sufficient condition for the heavy oil feedstock to generate the sulfiding source needed for the sulfidation.Type: GrantFiled: December 20, 2011Date of Patent: August 19, 2014Assignee: Chevron U.S.A. Inc.Inventors: Oleg Mironov, Alexander E. Kuperman, Julie Chabot, Shuwu Yang, Joseph V. Nguyen, Ling Jiao, Bruce Edward Reynolds, Axel Brait, Kenneth Kwik, Modinat Kotun
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Patent number: 8802586Abstract: An improved hydroprocessing slurry catalyst is provided for the upgrade of heavy oil feedstock. The catalyst comprises dispersed particles in a hydrocarbon medium with the dispersed particles have an average particle size ranging from 1 to 300 ?m. The catalyst has a total pore volume of at least 0.5 cc/g and a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter. The catalyst is prepared from sulfiding and dispersing a metal precursor solution in a hydrocarbon diluent, the metal precursor comprising at least a Primary metal precursor and optionally a Promoter metal precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution.Type: GrantFiled: December 20, 2011Date of Patent: August 12, 2014Assignee: Chevron U.S.A. Inc.Inventors: Ling Jiao, Julie Chabot, Joseph V. Nguyen, Christopher Paul Dunckley, Shuwu Yang, Erin P. Maris, Oleg Mironov, Bruce Edward Reynolds, Alexander E. Kuperman
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Patent number: 8802587Abstract: An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. The sulfiding of the metal precursor/catalyst precursor is carried out at least twice (“enhanced sulfiding”) in the improved process to form a slurry catalyst with improved surface area and porosity value. The slurry catalyst under an enhanced sulfiding scheme is characterized as having increased catalytic activities over a slurry catalyst without an enhanced sulfidation step.Type: GrantFiled: December 20, 2011Date of Patent: August 12, 2014Assignee: Chevron U.S.A. Inc.Inventors: Joseph V. Nguyen, Julie Chabot, Ling Jiao, Christopher Paul Dunckley, Shuwu Yang
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Patent number: 8778828Abstract: A process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. The process employs a pressure leach solution obtained from a metal recovery process as part of the metal precursor feed. In one embodiment, the process comprises: sulfiding a pressure leach solution having at least a Group VIB metal precursor compound in solution forming a catalyst precursor, and mixing the sulfided catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the pressure leach solution is mixed with a hydrocarbon diluent under high shear mixing conditions to form an emulsion, which emulsion can be sulfided in-situ upon contact with a heavy oil feedstock in the heavy oil upgrade process.Type: GrantFiled: December 20, 2011Date of Patent: July 15, 2014Assignee: Chevron U.S.A. Inc.Inventors: Oleg Mironov, Alexander E. Kuperman, Rahul Shankar Bhaduri, Julie Chabot, Shuwu Yang, Ling Jiao, Joseph V. Nguyen, Bruce Edward Reynolds
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Patent number: 8703637Abstract: An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, at least a metal precursor feedstock is portioned and fed in any of the stages: the promotion stage; the sulfidation stage; or the transformation stage of a water-based catalyst precursor to a slurry catalyst. In one embodiment, the promoter metal precursor feedstock is split into portions, the first portion is for the sulfiding step, the second portion is for the promotion step; and optionally the third portion is to be added to the transformation step in the mixing of the sulfided promoted catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the Primary metal precursor feedstock is split into portions.Type: GrantFiled: December 20, 2011Date of Patent: April 22, 2014Assignee: Chevron U.S.A. Inc.Inventors: Shuwu Yang, Julie Chabot, Ling Jiao, Joseph V. Nguyen, Bruce Edward Reynolds
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Publication number: 20120172202Abstract: A process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. The process employs a pressure leach solution obtained from a metal recovery process as part of the metal precursor feed. In one embodiment, the process comprises: sulfiding a pressure leach solution having at least a Group VIB metal precursor compound in solution forming a catalyst precursor, and mixing the sulfided catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the pressure leach solution is mixed with a hydrocarbon diluent under high shear mixing conditions to form an emulsion, which emulsion can be sulfided in-situ upon contact with a heavy oil feedstock in the heavy oil upgrade process.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Applicant: Chevron CorporationInventors: Oleg Mironov, Alexander E. Kuperman, Rahul Shankar Bhaduri, Julie Chabot, Shuwu Yang, Joseph V. Nguyen, Ling Jiao, Bruce Edward Reynolds
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Publication number: 20120172206Abstract: A method for preparing an improved slurry catalyst for the upgrade of heavy oil feedstock is provided. In one embodiment, the process comprises: sulfiding at least a metal precursor solution with at least a sulfiding agent forming a sulfided Group VIB catalyst precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution; and mixing the catalyst precursor with a hydrocarbon diluent to form the slurry catalyst composition. The slurry catalyst prepared therefrom has a BET total surface area of at least 100 m2/g, a total pore volume of at least 0.5 cc/g and a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Inventors: Joseph V. Nguyen, Julie Chabot, Ling Jiao, Christopher Paul Dunckley, Shuwu Yang, Erin P. Maris, Oleg Mironov, Bruce Edward Reynolds, Alexander E. Kuperman
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Publication number: 20120172207Abstract: An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. The sulfiding of the metal precursor/catalyst precursor is carried out at least twice (“enhanced sulfiding”) in the improved process to form a slurry catalyst with improved surface area and porosity value. The slurry catalyst under an enhanced sulfiding scheme is characterized as having increased catalytic activities over a slurry catalyst without an enhanced sulfidation step.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Inventors: Joseph V. NGUYEN, Ling JIAO, Julie CHABOT, Christopher Paul DUNCKLEY, Shuwu YANG
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Publication number: 20120172199Abstract: An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, at least a metal precursor feedstock is portioned and fed in any of the stages: the promotion stage; the sulfidation stage; or the transformation stage of a water-based catalyst precursor to a slurry catalyst. In one embodiment, the promoter metal precursor feedstock is split into portions, the first portion is for the sulfiding step, the second portion is for the promotion step; and optionally the third portion is to be added to the transformation step in the mixing of the sulfided promoted catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the Primary metal precursor feedstock is split into portions.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Inventors: Shuwu Yang, Julie Chabot, Ling Jiao, Joseph V. Nguyen, Bruce Edward Reynolds
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Publication number: 20120172203Abstract: An improved process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, high shear mixing is employed to generate an emulsion containing droplets of metal precursor in oil with droplet sizes ranging from 0.1 to 300 ?m. The emulsion is subsequently sulfided with a sulfiding agent, or in-situ in a heavy oil feedstock to form a slurry catalyst. The in-situ sulfidation in heavy oil is under sufficient condition for the heavy oil feedstock to generate the sulfiding source needed for the sulfidation.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Inventors: Oleg Mironov, Alexander E. Kuperman, Juli Chabot, Shuwu Yang, Joseph V. Nguyen, Ling Jiao, Bruce Edward Reynolds, Axel Brait, Kenneth Kwik, Modinat Kotun
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Publication number: 20120172205Abstract: An improved hydroprocessing slurry catalyst is provided for the upgrade of heavy oil feedstock. The slurry catalyst is prepared from at least a Group VIB metal precursor compound and optionally at least a Promoter metal precursor compound. The catalyst comprises dispersed particles in a hydrocarbon medium with the dispersed particles have an average particle size ranging from 1 to 300 ?m. The catalyst has a total surface area of at least 100 m2/g. The catalyst is prepared from sulfiding and dispersing a metal precursor solution in a hydrocarbon diluent, the metal precursor comprising at least a Primary metal precursor and optionally a Promoter metal precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Applicant: Chevron CorporationInventors: Julie Chabot, Ling Jiao, Joseph V. Nguyen, Christopher Paul Dunckley, Shuwu Yang, Erin P. Maris, Oleg Mironov, Bruce Edward Reynolds, Alexander E. Kuperman
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Publication number: 20120172204Abstract: An improved hydroprocessing slurry catalyst is provided for the upgrade of heavy oil feedstock. The catalyst comprises dispersed particles in a hydrocarbon medium with the dispersed particles have an average particle size ranging from 1 to 300 ?m. The catalyst has a total pore volume of at least 0.5 cc/g and a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter. The catalyst is prepared from sulfiding and dispersing a metal precursor solution in a hydrocarbon diluent, the metal precursor comprising at least a Primary metal precursor and optionally a Promoter metal precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Inventors: Ling Jiao, Julie Chabot, Joseph V. Nguyen, Christopher Paul Dunckley, Shuwu Yang, Erin P. Maris, Oleg Mironov, Bruce Edward Reynolds, Alexander E. Kuperman