公开(公告)号：US20240076560A1

公开(公告)日：2024-03-07

申请号：US18269239

申请日：2021-12-20

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Guan-Dao LEI ,  Adeola Florence OJO

IPC: C10G45/64 ,  B01J29/76

CPC classification number: C10G45/64 ,  B01J29/7661 ,  C10G2300/80

Abstract: Described herein is a process for hydroisomerising a hydrocarbon feed. The process may comprise: combining a hydrocarbon feed and a hydroisomerisation additive to provide a combined feed; and contacting the combined feed with a hydroisomerisation catalyst comprising zeolite SSZ-91, where the hydroisomerisation additive is a substituted or unsubstituted nitrogen heterocycle.

公开(公告)号：US20220305471A1

公开(公告)日：2022-09-29

申请号：US17214782

申请日：2021-03-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Adeola Florence OJO ,  Yihua ZHANG ,  Guan-Dao LEI ,  Howard S. LACHEEN

IPC: B01J29/80 ,  B01J29/74 ,  B01J37/04 ,  B01J37/03 ,  C10G45/64

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.

公开(公告)号：US20220288565A1

公开(公告)日：2022-09-15

申请号：US17199262

申请日：2021-03-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Guan-Dao LEI

IPC: B01J23/44 ,  B01J21/04 ,  B01J35/10 ,  B01J23/42 ,  C10G45/52 ,  B01J21/12

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.

公开(公告)号：US20220143587A1

公开(公告)日：2022-05-12

申请号：US17095010

申请日：2020-11-11

Applicant: CHEVRON U.S.A INC.

Inventor： Yihua ZHANG ,  Adeola Florence OJO ,  Guan-Dao LEI

IPC: B01J29/74 ,  B01J29/70 ,  B01J29/80 ,  B01J21/04 ,  B01J35/10 ,  C10M109/02 ,  C10G45/64

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.

公开(公告)号：US20160089666A1

公开(公告)日：2016-03-31

申请号：US14862358

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 ,  C10G45/64 ,  C10M101/02

Abstract: The present invention is directed to an improved finished hydroisomerization catalyst manufactured from a first high nanopore volume (HNPV) alumina and a pore size distribution characterized by a full width at half-maximum, normalized to pore volume, of 15 to 25 nm·g/cc, and a second HNPV alumina having a pore size distribution characterized by a full width at half-maximum, normalized to pore volume, of 5 to 15 nm·g/cc. Their combination yields a HNPV base extrudate having a low particle density as compared to a conventional base extrudates.

Abstract translation: 本发明涉及一种由第一高纳米孔体积（HNPV）氧化铝制成的改进的成品加氢异构化催化剂，其特征在于孔的体积的半峰全宽度为15至25nm·g / cc，第二HNPV氧化铝的孔径分布的特征在于半孔的全宽度归一化为孔体积，为5〜15nm·g / cc。 与传统的基础挤出物相比，它们的组合产生具有低颗粒密度的HNPV基础挤出物。