公开(公告)号：US20230174873A1

公开(公告)日：2023-06-08

申请号：US17923788

申请日：2021-05-05

Applicant: Chevron U.S.A. Inc.

Inventor： Bi-Zeng ZHAN ,  Tracy M. DAVIS ,  Ann Jia-Bao LIANG

IPC: C10G47/04 ,  B01J6/00 ,  B01J37/02 ,  C10G47/20

CPC classification number: C10G47/04 ,  B01J6/001 ,  B01J37/0201 ,  C10G47/20

Abstract: 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. The base of the catalyst used in the present second hydrocracking stage comprises alumina, an amorphous silica-alumina (ASA) material, a USY zeolite and zeolite ZSM-12.

公开(公告)号：US20220288566A1

公开(公告)日：2022-09-15

申请号：US17199282

申请日：2021-03-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Guan-Dao LEI ,  Bi-Zeng ZHAN

IPC: B01J23/44 ,  B01J21/12 ,  B01J35/10 ,  C10M101/02 ,  C10M177/00 ,  C10G45/62

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 a second amorphous silica alumina. The catalyst and process generally involve the use of a base extrudate comprising the high nanopore volume ASA and the second ASA in a catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises a first amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.2 to 1.0 cc/g and a second amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.02 to 0.2 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：US20220080382A1

公开(公告)日：2022-03-17

申请号：US17533838

申请日：2021-11-23

Applicant: Chevron U.S.A. Inc. ,  Triad National Security, LLC

Inventor： Bi-Zeng ZHAN ,  Zunqing HE ,  Hoon Taek CHUNG ,  Piotr ZELENAY

IPC: B01J20/20 ,  B01J20/02 ,  B01J20/28 ,  B01J20/30 ,  B01J20/32 ,  C10G25/00

Abstract: Metal nanoparticle-deposited, nitrogen-doped carbon adsorbents are disclosed, along with methods of removing sulfur compounds from a hydrocarbon feed stream using these adsorbents.