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11.发明申请HYDROISOMERIZATION CATALYST WITH A BASE EXTRUDATE HAVING A HIGH NANOPORE VOLUME 审中-公开具有高NANOPORE体积的碱性挤出物的水解催化剂公开(公告)号：US20160089663A1
公开(公告)日：2016-03-31
申请号：US14862302
申请日：2015-09-23
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Kamala Raghunathan KRISHNA , Guan-Dao LEI , Theodorus Ludovicus Michael MAESEN
IPC: B01J29/74 , C10G45/64 , C10M101/02 , B01J35/10
CPC classification number: B01J29/74 , B01J21/04 , B01J29/7461 , B01J29/7492 , B01J35/00 , B01J35/0026 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/1061 , B01J35/108 , B01J2229/20 , C10G45/64 , C10M101/02
Abstract: The present invention is directed to an improved finished hydroisomerization catalyst manufactured from a first high nanopore volume (HNPV) alumina having a broad pore size distribution (BPSD), and a second HNPV alumina having narrow pore size distribution (NPSD). Their combination yields a HNPV base extrudate having larger porosity with a bimodal pore size distribution as compared to a conventional base extrudates.
Abstract translation: 本发明涉及由具有宽孔径分布（BPSD）的第一高纳米孔体积（HNPV）氧化铝和具有窄孔径分布（NPSD）的第二HNPV氧化铝制成的改进的成品加氢异构化催化剂。 与常规的基础挤出物相比，它们的组合产生具有更大孔隙率的HNPV基础挤出物，具有双峰孔径分布。
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公开(公告)号：US20240327731A1
公开(公告)日：2024-10-03
申请号：US18269256
申请日：2021-12-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Jay Parekh , Jifei JIA , Guan-Dao LEI , Kenny PEINADO , Yihua ZHANG , Shanying LEE
CPC classification number: C10G55/06 , B01D3/143 , C10G2400/04
Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.
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公开(公告)号：US20240301300A1
公开(公告)日：2024-09-12
申请号：US18261998
申请日：2022-01-17
Applicant: CHEVRON U.S.A. INC.
Inventor： Viorel DUMA , Subhasis BHATTACHARYA , Guan-Dao LEI
CPC classification number: C10G65/12 , C10G47/18 , C10G47/20 , C10G2300/1059 , C10G2300/202 , C10G2300/205 , C10G2300/301 , C10G2300/302
Abstract: A method of producing a base oil product by hydroprocessing unconverted oil from a hydrocracker in an unconverted oil upgrade reactor to produce upgraded unconverted oil and dewaxing the upgraded unconverted oil to produce the base oil product.
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公开(公告)号：US20240299918A1
公开(公告)日：2024-09-12
申请号：US18261481
申请日：2022-01-13
Applicant: CHEVRON U.S.A. Inc.
Inventor： Yihua ZHANG , Adeola OJO , Guan-Dao LEI
CPC classification number: B01J29/7661 , B01J35/50 , C10G45/64
Abstract: A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.
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公开(公告)号：US20240149250A1
公开(公告)日：2024-05-09
申请号：US18550116
申请日：2022-03-10
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Guan-Dao LEI
CPC classification number: B01J23/44 , B01J21/04 , B01J21/12 , B01J23/42 , B01J35/633 , B01J35/647 , C10G45/52 , C10G2300/1096 , C10G2300/70
Abstract: An improved hydrotreating catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes a high nanopore volume amorphous silica alumina (ASA) and an alumina. The catalyst and process generally involve the use of a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.2 to 0.9 cc/g and an alumina having, a pore volume in the 11-20 nm pore diameter range of 0.01 to 1.0 cc/g, with the base extrudate formed from the amorphous silica alumina and the alumina having a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst further comprises at least one modifier element from Groups 6 to 10 and Group 14 of the Periodic Table. The catalyst and process provide improved aromatics saturation.
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Patent Agency Ranking
公开(公告)号：US20240084204A1
公开(公告)日：2024-03-14
申请号：US18263123
申请日：2022-01-26
Applicant: CHEVRON U.S.A. INC.
Inventor： Horacio TREVINO , Minghui ZHANG , Guan-Dao LEI , Thomas Ralph FARRELL
CPC classification number: C10G45/48 , C10G45/60 , C10G65/12 , C10G2300/302 , C10G2300/308 , C10G2400/10
Abstract: An improved process for making a bright stock 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 bright stock grade base oil product having a viscosity of at least about 22 cSt at 100° C. The invention is useful to make heavy grade base oil products such as bright stock, as well as Group II and/or Group III/III+ base oils.
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公开(公告)号：US20240076565A1
公开(公告)日：2024-03-07
申请号：US18262317
申请日：2022-01-18
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Guan-Dao LEI
CPC classification number: C10G67/0418 , B01J29/7461 , C10G45/62 , C10G45/64 , C10G65/043 , C10G2300/1022 , C10G2300/304 , 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 comprise a step that reduces the amount of residual refractory sulfur compounds prior to or simultaneous with a hydrofinishing step which advantageously provides base oils with lower aromatics than comparable processes.
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公开(公告)号：US20220325192A1
公开(公告)日：2022-10-13
申请号：US17634438
申请日：2020-08-12
Applicant: Chevron U.S.A. Inc.
Inventor： Minghui ZHANG , Horacio TREVINO , Guan-Dao LEI , Thomas Ralph FARRELL , Vijay R. SAMPATH
IPC: C10G69/02 , C10M101/02
Abstract: An improved process for making a base oil and for improving base oil yields by combining an atmospheric resid feedstock with a base oil feedstock and forming a base oil product 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 a light and heavy grade base oil product. A process is also disclosed for making a base oil having a viscosity index of 120 or greater from a base oil feedstock having a viscosity index of about 100 or greater that includes a narrow cut-point range vacuum gas oil. The invention is useful to make Group II and/or Group III/III+ base oils, and, in particular, to increase the yield of a heavy base oil product relative to a light base oil product produced in the process.
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公开(公告)号：US20220228074A1
公开(公告)日：2022-07-21
申请号：US17153869
申请日：2021-01-20
Applicant: Chevron U.S.A. Inc.
Inventor： Yihua ZHANG , Guan-Dao LEI
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 comprise a step that reduces the amount of residual refractory sulfur compounds prior to or simultaneous with a hydrofinishing step which advantageously provides base oils with lower aromatics than comparable processes.
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公开(公告)号：US20240367159A1
公开(公告)日：2024-11-07
申请号：US18552655
申请日：2022-03-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Adeola OJO , Yihua ZHANG , Guan-Dao LEI , Howard Steven LACHEEN
Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.
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