公开(公告)号：US20240076563A1

公开(公告)日：2024-03-07

申请号：US18260223

申请日：2021-12-24

Applicant: CHEVRON U.S.A. INC.

Inventor： Kenneth John PEINADO ,  Jay PAREKH ,  Jifei JIA ,  Yihua ZHANG ,  Guan-Dao Lei ,  Guang ZHANG

IPC: C10G67/02 ,  C10M101/02 ,  C10M177/00

CPC classification number: C10G67/02 ,  C10M101/02 ,  C10M177/00 ,  C10G2300/202 ,  C10G2300/302 ,  C10G2300/304 ,  C10G2300/308 ,  C10G2400/04 ,  C10G2400/10 ,  C10G2400/14 ,  C10M2203/1006 ,  C10N2070/00

Abstract: Provided in one embodiment is an improved and more flexible process for preparing a finished base oil or a white oil product comprising passing a dewaxed base oil product to a distillation column and separating the dewaxed base oil product into fuel and base oil product streams. The base oil product streams are tested to determine if they meet desired specifications. Base oil product streams that meet the desired minimum base oil specifications are passed to a hydrofinishing reactor to prepare a white oil product, or passed to direct sale.

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

IPC: C10G55/06 ,  B01D3/14

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.

公开(公告)号：US20230001383A1

公开(公告)日：2023-01-05

申请号：US17774085

申请日：2020-11-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Ann LIANG ,  Trenton J. OTTO ,  Jifei JIA ,  Ling JIAO ,  Bao Q. LE ,  Kaustav CHAUDHURI ,  Bi-Zeng ZHAN

IPC: B01J21/12 ,  B01J29/10 ,  B01J35/10 ,  B01J35/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/00 ,  B01J37/08 ,  C10G47/18 ,  C10G45/12

Abstract: 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.

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

IPC: C10G67/04 ,  C10G45/62

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.

公开(公告)号：US20230272291A1

公开(公告)日：2023-08-31

申请号：US18006495

申请日：2021-07-23

Applicant: Chevron U.S.A. Inc.

Inventor： Jifei JIA ,  Bi-Zeng ZHAN ,  Wai Seung William LOUIE ,  Arun ARORA ,  Jay PAREKH

IPC: C10G65/10 ,  C10G47/20 ,  B01J37/02 ,  B01J29/06 ,  B01J29/08 ,  B01J29/076 ,  B01J37/08

CPC classification number: C10G65/10 ,  C10G47/20 ,  B01J37/0203 ,  B01J29/061 ,  B01J29/084 ,  B01J29/076 ,  B01J37/08

Abstract: Provided is a novel catalyst for use in the second stage of a two-stage hydrocracking process. The present process comprises hydrocracking a hydrocarbon feed in a first stage. The catalyst in the first stage is a conventional hydrocracking catalyst. The product from the first stage can then be transferred to a second hydrocracking stage. The catalyst used in the second stage of the present hydrocracking process comprises a base impregnated with metals from Group 6 and Groups 8 through 10 of the Periodic Table, and an organic acid. The base of the catalyst used in the present second hydrocracking stage comprises alumina, an amorphous silica-alumina (ASA) material, and a USY zeolite. Improved naphtha production is achieved.

公开(公告)号：US20230226533A1

公开(公告)日：2023-07-20

申请号：US18001887

申请日：2021-06-15

Applicant: CHEVRON U.S.A. INC.

Inventor： Jifei JIA ,  Bi-Zeng ZHAN ,  Theodorus Ludovicus Michael MAESEN

IPC: B01J29/80 ,  B01J29/16 ,  B01J29/78 ,  B01J21/12 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08 ,  C10G47/20

CPC classification number: B01J29/80 ,  B01J29/166 ,  B01J29/7815 ,  B01J21/12 ,  B01J37/0018 ,  B01J37/0203 ,  B01J37/088 ,  C10G47/20 ,  B01J2029/062

Abstract: The process comprises hydrocracking a hydrocarbon feed in a single stage. The catalyst comprises a base impregnated with metals from Group 6 and Groups 8 through 10 of the Periodic Table, as well as citric acid. The base of the catalyst used in the present hydrocracking process comprises alumina, an amorphous silica-alumina (ASA) material, a USY zeolite, and a beta zeolite.