公开(公告)号：US20240117256A1

公开(公告)日：2024-04-11

申请号：US18263119

申请日：2022-01-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Horacio TREVINO ,  Minghui ZHANG ,  Guan-Dao LEI ,  Luyen T. VO

IPC: C10G65/12 ,  C10G45/44 ,  C10G65/14 ,  C10M101/02 ,  C10M171/02 ,  C10M177/00

CPC classification number: C10G65/12 ,  C10G45/44 ,  C10G65/14 ,  C10M101/02 ,  C10M171/02 ,  C10M177/00 ,  C10G2300/107 ,  C10G2300/202 ,  C10G2300/302 ,  C10G2300/308 ,  C10G2400/10 ,  C10M2203/1025 ,  C10N2020/015

Abstract: An improved process for making a heavy base oil from a base oil feedstream comprising an atmospheric resid feedstock, and, optionally, a base oil feedstock, via hydroprocessing. The process generally involves subjecting a base oil feedstream comprising the atmospheric resid to hydrocracking and dewaxing steps, and optionally to hydrofinishing, to produce base oil product(s) including a heavy grade base oil product having a viscosity of at least about 12.7 cSt at 100° C. The invention is useful to make heavy grade base oil products, as well as Group II and/or Group III/III+ base oils.