公开(公告)号：US11441085B2

公开(公告)日：2022-09-13

申请号：US17138009

申请日：2020-12-30

Applicant: Chevron U.S.A. Inc.

Inventor： Kenny Peinado ,  Jay Parekh ,  Jifei Jia ,  Yihua Zhang ,  Guan-Dao Lei ,  Guang Zhang

IPC: C10G67/02 ,  C10M177/00 ,  C10M101/02 ,  C10N70/00

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：US20220204876A1

公开(公告)日：2022-06-30

申请号：US17138038

申请日：2020-12-30

Applicant: Chevron U.S.A. Inc.

Inventor： Kenny Peinado ,  Jifei Jia ,  Guan-Dao Lei ,  Jay Parekh ,  Yihua Zhang

IPC: C10G67/04 ,  C10G45/62

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：US20190105640A1

公开(公告)日：2019-04-11

申请号：US16210088

申请日：2018-12-05

Applicant: Chevron U.S.A. Inc.

Inventor： Jifei Jia ,  Andrew Rainis ,  Theodorus Ludovicus Michael Maesen ,  Richard Joseph Coser ,  Yihua Zhang ,  Thomas Michael Rea

IPC: B01J29/80 ,  B01J35/00 ,  B01J37/02 ,  B01J37/00 ,  C10G47/18 ,  B01J37/08 ,  B01J37/04 ,  B01J23/88 ,  B01J23/888 ,  B01J29/08 ,  B01J29/70 ,  B01J29/74 ,  B01J29/12

Abstract: A second-stage hydrocracking catalyst is provided, comprising: a) a zeolite beta having an OD acidity of 20 to 400 μmol/g and an average domain size from 800 to 1500 nm2; b) a zeolite USY having an ASDI between 0.05 and 0.12; c) a catalyst support; and d) 0.1 to 10 wt % noble metal; wherein the second-stage hydrocracking catalyst provides a hydrogen consumption less than 350 SCFB across a range of synthetic conversions up to 37 wt % when used to hydrocrack hydrocarbonaceous feeds having an initial boiling point greater than 380° F. (193° C.). A second-stage hydrocracking process using the second-stage hydrocracking process is provided. A method to make the second-stage hydrocracking catalyst is also provided.

公开(公告)号：US20190002299A1

公开(公告)日：2019-01-03

申请号：US15753074

申请日：2016-08-11

Applicant: Chevron U.S.A. Inc.

Inventor： Adeola Florence Ojo ,  Dan Xie ,  Yihua Zhang ,  Guan-Dao Lei

IPC: C01B39/02 ,  B01J35/00 ,  B01J29/70 ,  B01J29/80 ,  B01J29/74 ,  C01B39/48 ,  C01B39/46

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.

公开(公告)号：US20180361366A1

公开(公告)日：2018-12-20

申请号：US16057778

申请日：2018-08-07

Applicant: Chevron U.S.A. Inc.

Inventor： Yihua Zhang ,  Theodorus Ludovicus Michael Maesen ,  Yalin Hao ,  Thomas Michael Rea ,  Don Ramon Bushee

IPC: B01J29/80 ,  C10G47/20 ,  B01J23/88 ,  B01J37/04 ,  B01J37/02 ,  B01J37/00 ,  B01J35/00 ,  B01J37/08 ,  B01J23/888 ,  B01J29/70 ,  B01J29/08 ,  B01J29/16 ,  B01J29/78

Abstract: A hydrocracking catalyst comprising a zeolite beta having an average domain size from 800 to 1500 nm2; a zeolite USY; a catalyst support; and at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. The zeolite beta has an OD acidity of 20 to 50 μmol/g and the catalyst support comprises an amorphous silica aluminate and a second support material when the weight percentage content of the zeolite beta is less than the weight percentage of the zeolite USY, and, when the weight percentage content of the zeolite beta is greater than the weight percentage of the zeolite USY, the zeolite beta has an OD acidity of 20 to 400 μmol/g, the zeolite beta content is from 0.5 to 10 wt. % and the zeolite USY has an ASDI between 0.05 and 0.12 with a corresponding zeolite USY content of from 0 to 5 wt. %. A process for hydrocracking a hydrocarbonaceous feedstock using the catalyst is also described as is a method for making the hydrocracking catalyst.

公开(公告)号：US09944863B2

公开(公告)日：2018-04-17

申请号：US15291823

申请日：2016-10-12

Applicant: Chevron U.S.A. Inc.

Inventor： Yihua Zhang ,  Theodorus Ludovicus Michael Maesen

IPC: C10G47/20 ,  B01J29/16 ,  B01J29/064 ,  B01J29/076 ,  B01J35/00 ,  B01J35/10 ,  B01J21/12 ,  B01J23/888 ,  B01J29/08 ,  B01J37/00 ,  B01J37/02 ,  B01J35/02

CPC classification number: C10G47/20 ,  B01J21/12 ,  B01J23/888 ,  B01J29/064 ,  B01J29/076 ,  B01J29/084 ,  B01J29/166 ,  B01J35/002 ,  B01J35/0026 ,  B01J35/023 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061 ,  B01J35/108 ,  B01J37/0009 ,  B01J37/0201 ,  B01J2229/20 ,  B01J2229/42 ,  C10G2300/1044 ,  C10G2300/70

Abstract: The present invention is directed to an improved hydrocracking catalyst containing an amorphous silica-alumina (ASA) base and alumina support. The ASA base is characterized as having a high nanopore volume and low particle density. The alumina support is characterized as having a high nanopore volume. Hydrocracking catalysts employing the combination high nanopore volume ASA base and alumina support exhibit improved hydrogen efficiency, and greater product yield and quality, as compared to hydrocracking catalysts containing conventional ASA base and alumina components.