公开(公告)号：US20220204875A1

公开(公告)日：2022-06-30

申请号：US17138039

申请日：2020-12-30

Applicant: Chevron U.S.A. Inc.

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

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

Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.

公开(公告)号：US20240327731A1

公开(公告)日：2024-10-03

申请号：US18269256

申请日：2021-12-24

Applicant: CHEVRON U.S.A. INC.

Inventor： Jay Parekh ,  Jifei JIA ,  Guan-Dao LEI ,  Kenny PEINADO ,  Yihua ZHANG ,  Shanying LEE

IPC: C10G55/06 ,  B01D3/14

CPC classification number: C10G55/06 ,  B01D3/143 ,  C10G2400/04

Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.

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：US11873455B2

公开(公告)日：2024-01-16

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: C10G45/62 ,  C10G67/04

CPC classification number: C10G67/0418 ,  C10G45/62 ,  C10G2300/1022 ,  C10G2300/304 ,  C10G2300/70 ,  C10G2400/10

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：US20220204874A1

公开(公告)日：2022-06-30

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

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：US20220204873A1

公开(公告)日：2022-06-30

申请号：US17137928

申请日：2020-12-30

Applicant: Chevron U.S.A. Inc.

Inventor： Ling Jiao ,  Bi-Zeng Zhan ,  Don Bushee ,  Theodorus Ludovicus Michael Maesen ,  Hye-Kyung Timken ,  Richard Dutta ,  Jay Parekh

IPC: C10G65/12 ,  C10G47/14 ,  C10G7/00

Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.