公开(公告)号：US20230348798A1

公开(公告)日：2023-11-02

申请号：US18042724

申请日：2021-08-30

Applicant: CHEVRON U.S.A. INC.

Inventor： Subhasis BHATTACHARYA ,  Yihua ZHANG ,  Guan-Dao LEI ,  Ajit R. PRADHAN

IPC: C10G45/62 ,  C10G45/64 ,  C10G65/04 ,  B01J29/74

CPC classification number: C10G45/62 ,  B01J29/74 ,  C10G45/64 ,  C10G65/043 ,  C10G2300/302 ,  C10G2300/304 ,  C10G2400/10

Abstract: An improved process and catalyst system for making a base oil product and for improving base oil cloud point and pour point characteristics, while also providing good product yields. The process and catalyst system generally involves the use of a layered catalyst system comprising an SSZ-91 catalyst and an SSZ-32X catalyst arranged to sequentially contact a hydrocarbon feedstock with both catalysts and thereby provide dewaxed base oil products.