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公开(公告)号：US20240165596A1
公开(公告)日：2024-05-23
申请号：US18552664
申请日：2022-03-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Adeola OJO , Yihua ZHANG , Guan-Dao LEI , Howard Steven LACHEEN
CPC classification number: B01J29/7492 , B01J29/7046 , B01J35/615 , B01J35/633 , B01J37/03 , B01J37/30 , C01B39/06 , C07C5/2708 , B01J2229/16 , B01J2229/186 , C01P2002/72 , C01P2002/82 , C01P2004/03 , C01P2004/04 , C01P2006/12 , C01P2006/14 , C07C2523/44 , C07C2529/70 , C07C2529/74
Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-93. Molecular sieve SSZ-93 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-93 is characterized as having magnesium.
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公开(公告)号：US20240101912A1
公开(公告)日：2024-03-28
申请号：US18038240
申请日：2021-11-22
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Adeola OJO , Guan-Dao LEI
IPC: C10G45/64 , B01J29/74 , B01J29/80 , B01J37/02 , B01J37/04 , B01J37/08 , C10M109/02 , C10M177/00
CPC classification number: C10G45/64 , B01J29/7461 , B01J29/7469 , B01J29/80 , B01J37/0201 , B01J37/04 , B01J37/088 , C10M109/02 , C10M177/00 , B01J2029/062
Abstract: An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.
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公开(公告)号：US20240076564A1
公开(公告)日：2024-03-07
申请号：US18262178
申请日：2022-01-18
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Subhasis BHATTACHARYA , Guan-Dao LEI
CPC classification number: C10G67/0418 , B01J29/7461 , C10G45/62 , C10G45/64 , C10G65/043 , C10G2300/302 , C10G2300/304 , C10G2300/70 , C10G2400/10
Abstract: Described are processes to produce base oils with one more improved properties, e.g., lower aromatics, economically and/or efficiently. In some embodiments, the processes relate to two stage (or more) hydrofinishing which advantageously provides base oils with lower aromatics than comparable one stage processes.
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公开(公告)号：US20240059987A1
公开(公告)日：2024-02-22
申请号：US18269751
申请日：2021-12-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Kenneth John PEINADO , Jifei JIA , Guan-Dao LEI , Jay PAREKH , Yihua ZHANG
CPC classification number: C10G67/0418 , C10G45/62 , C10G2300/1022 , C10G2300/304 , C10G2300/70 , C10G2400/10
Abstract: Provided is a process for preparing base oil from a waxy hydrocarbon feedstock by contacting the hydrocarbon feedstock in a hydroisomerization zone under hydroisomerization conditions. The reaction is in the presence of hydrogen and an inert gas, with the total pressure in the hydroisomerization zone being at least 400 psig. A product from the hydroisomerization zone is collected and separated into base oil products and fuel products. The inert gas can comprise any suitable inert gas, but is generally nitrogen, methane or argon. Nitrogen is used in one embodiment.
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公开(公告)号：US20230348798A1
公开(公告)日：2023-11-02
申请号：US18042724
申请日：2021-08-30
Applicant: CHEVRON U.S.A. INC.
Inventor： Subhasis BHATTACHARYA , Yihua ZHANG , Guan-Dao LEI , Ajit R. PRADHAN
CPC classification number: C10G45/62 , B01J29/74 , C10G45/64 , C10G65/043 , C10G2300/302 , C10G2300/304 , C10G2400/10
Abstract: An improved process and catalyst system for making a base oil product and for improving base oil cloud point and pour point characteristics, while also providing good product yields. The process and catalyst system generally involves the use of a layered catalyst system comprising an SSZ-91 catalyst and an SSZ-32X catalyst arranged to sequentially contact a hydrocarbon feedstock with both catalysts and thereby provide dewaxed base oil products.
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Patent Agency Ranking
公开(公告)号：US20210269319A1
公开(公告)日：2021-09-02
申请号：US17317469
申请日：2021-05-11
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence OJO , Dan XIE , Yihua ZHANG , Guan-Dao LEI
IPC: C01B39/02 , B01J29/74 , C01B39/46 , B01J29/70 , B01J29/80 , B01J35/00 , C01B39/48 , B01J29/72 , B01J29/76
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
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公开(公告)号：US20200299142A1
公开(公告)日：2020-09-24
申请号：US16848551
申请日：2020-04-14
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence OJO , Dan XIE , Yihua ZHANG , Guan-Dao LEI
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
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公开(公告)号：US20240409831A1
公开(公告)日：2024-12-12
申请号：US18738917
申请日：2024-06-10
Applicant: CHEVRON U.S.A. INC.
Inventor： Guan-Dao LEI , Horacio TREVINO
Abstract: A process for making a renewable product from a biofeedstock, in which a biofeedstock is contacted with a hydroconversion catalyst under hydroconversion conditions, the biofeedstock comprising one or more biocomponents having a C20+ content of at least about 10 wt. %, and the hydroconversion catalyst comprising a hydroisomerization catalyst.
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公开(公告)号：US20240141237A1
公开(公告)日：2024-05-02
申请号：US18269754
申请日：2021-12-20
Applicant: CHEVRON U.S.A. INC.
Inventor： Kamala R. KRISHNA , Yihua ZHANG , Guan-Dao LEI , Adeola OJO
CPC classification number: C10G11/05 , B01J29/703 , C10G3/44 , B01J2231/648 , C10G2300/1014 , C10G2400/04
Abstract: Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.
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公开(公告)号：US20240117256A1
公开(公告)日：2024-04-11
申请号：US18263119
申请日：2022-01-26
Applicant: CHEVRON U.S.A. INC.
Inventor： Horacio TREVINO , Minghui ZHANG , Guan-Dao LEI , Luyen T. VO
IPC: C10G65/12 , C10G45/44 , C10G65/14 , C10M101/02 , C10M171/02 , C10M177/00
CPC classification number: C10G65/12 , C10G45/44 , C10G65/14 , C10M101/02 , C10M171/02 , C10M177/00 , C10G2300/107 , C10G2300/202 , C10G2300/302 , C10G2300/308 , C10G2400/10 , C10M2203/1025 , C10N2020/015
Abstract: An improved process for making a heavy base oil from a base oil feedstream comprising an atmospheric resid feedstock, and, optionally, a base oil feedstock, via hydroprocessing. The process generally involves subjecting a base oil feedstream comprising the atmospheric resid to hydrocracking and dewaxing steps, and optionally to hydrofinishing, to produce base oil product(s) including a heavy grade base oil product having a viscosity of at least about 12.7 cSt at 100° C. The invention is useful to make heavy grade base oil products, as well as Group II and/or Group III/III+ base oils.
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