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公开(公告)号：US20240110120A1
公开(公告)日：2024-04-04
申请号：US18262171
申请日：2022-01-18
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Guan-Dao LEI , Malek M. ROSTAMI , Beth A. RUSSELL
IPC: C10M133/44 , C10M169/04
CPC classification number: C10M133/44 , C10M169/04 , C10N2030/20
Abstract: A method for making a base oil having enhanced color stability and the base oil prepared therefrom are disclosed. The method comprises adding a phenyl benzotriazole compound to a base oil composition to form a color-stabilized base oil composition. In some cases, the phenyl benzotriazole compound has the structural formula (I):
wherein,
R and R′ are independently one or more substituents selected from hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted cycloalkyl, substituted and unsubstituted alkoxy, substituted and unsubstituted carboxyl, or a combination thereof, with the proviso that at least one of R and R′ is a non-hydrogen substituent.-
公开(公告)号：US20240058802A1
公开(公告)日：2024-02-22
申请号：US18036572
申请日：2021-11-11
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Adeola Florence OJO , Guan Dao LEI
CPC classification number: B01J29/7461 , B01J21/04 , B01J29/7023 , B01J29/703 , B01J29/74 , B01J29/80 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/1061 , C10G45/64 , C10M109/02 , B01J2029/062
Abstract: An improved hydroisomerization catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes SSZ-91 molecular sieve and a high nanopore volume alumina. The catalyst and process generally involves the use of a SSZ-91/high nanopore volume alumina based catalyst to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an alumina having a pore volume in the 11-20 nm pore diameter range of 0.05 to 1.0 cc/g, with the base extrudate formed from SSZ-91 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 and process provide improved base oil yield with reduced gas and fuels production.
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公开(公告)号：US20220162508A1
公开(公告)日：2022-05-26
申请号：US17105614
申请日：2020-11-26
Applicant: Chevron U.S.A. Inc.
Inventor： Yihua ZHANG , Adeola Florence OJO , Guan-Dao LEI
IPC: C10G45/64 , B01J29/80 , B01J29/74 , B01J37/04 , B01J37/02 , B01J37/08 , C10M109/02 , C10M177/00
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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4.发明申请HYDROISOMERIZATION CATALYST WITH A BASE EXTRUDATE HAVING A HIGH TOTAL NANOPORE VOLUME 审中-公开具有高达NANOPORE体积的碱性挤出物的水解催化剂公开(公告)号：US20160089664A1
公开(公告)日：2016-03-31
申请号：US14862324
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 , C10G45/60 , C10G45/64 , C10G2300/1033 , C10G2300/107 , C10G2300/1077 , C10G2300/302 , C10G2300/304 , 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 higher total nanopore volume 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。 与传统的基础挤出物相比，它们的组合产生具有更高总纳米孔体积的HNPV基挤出物，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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Patent Agency Ranking
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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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：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：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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