公开(公告)号：US20200347309A1

公开(公告)日：2020-11-05

申请号：US16533510

申请日：2019-08-06

Applicant: Chevron U.S.A. Inc.

Inventor： Theodorus Ludovicus Michael MAESEN ,  Derek BLACKWELL ,  Viorel DUMA ,  Varut KOMALARAJUN ,  Alexander E. KUPERMAN ,  Hyunuk RYU ,  Horacio TREVINO ,  Alex YOON ,  Ujjal MUKHERJEE

IPC: C10G65/12 ,  C10G67/02 ,  B01J31/04 ,  B01J37/20

Abstract: A catalyst system has been designed that disrupts the sedimentation process. The catalyst system achieves this by saturating key feed components before the feed components are stripped into their incompatible aromatic cores. The efficacy of this disruptive catalyst system is particularly evident in a hydrocracker configuration that runs in two-stage-recycle operation. The catalyst is a self-supported multi-metallic catalyst prepared from a precursor in the hydroxide form, and the catalyst must be toward the top level of the second stage of the two-stage system.

公开(公告)号：US20220266227A1

公开(公告)日：2022-08-25

申请号：US17568778

申请日：2022-01-05

Applicant: CHEVRON U.S.A. INC.

Inventor： Xiaoying OUYANG ,  Alexander E. KUPERMAN

IPC: B01J23/888 ,  B01J35/10 ,  B01J35/00 ,  B01J37/20 ,  B01J37/08 ,  B01J37/00

Abstract: Multi-metallic bulk catalysts and methods for synthesizing the same are provided. The multi-metallic bulk catalysts contain nickel, molybdenum tungsten, copper, and optionally, titanium and/or niobium. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

公开(公告)号：US20220401931A1

公开(公告)日：2022-12-22

申请号：US17736169

申请日：2022-05-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Xiaoying OUYANG ,  Alexander E. KUPERMAN

IPC: B01J27/051 ,  C10G47/06 ,  B01J37/02 ,  B01J37/20

Abstract: Multi-metallic bulk catalysts and methods for synthesizing the same are provided. The multi-metallic bulk catalysts contain nickel, molybdenum tungsten, yttrium, and optionally, copper, titanium and/or niobium. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

公开(公告)号：US20220258138A1

公开(公告)日：2022-08-18

申请号：US17516929

申请日：2021-11-02

Applicant: CHEVRON U.S.A. INC.

Inventor： Xiaoying OUYANG ,  Alexander E. KUPERMAN

IPC: B01J23/888 ,  B01J23/00 ,  B01J31/04 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  B01J37/03 ,  B01J37/00 ,  B01J35/10 ,  B01J35/00 ,  C10G47/02

Abstract: Multi-metallic bulk catalysts and methods for synthesizing the same are provided. The multi-metallic bulk catalysts contain nickel, molybdenum tungsten, niobium, and optionally, titanium and/or copper. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

公开(公告)号：US20250121361A1

公开(公告)日：2025-04-17

申请号：US18915198

申请日：2024-10-14

Applicant: CHEVRON U.S.A. INC.

Inventor： Xiaoying OUYANG ,  Alexander E. KUPERMAN ,  Huping LUO ,  Rahul S. BHADURI ,  Christopher LANE

IPC: B01J23/94 ,  B01J23/755 ,  C01B3/30

Abstract: Methods for regenerating spent catalysts, including spent catalysts used in in the catalytic conversion of a hydrocarbon feedstock. The method and associated processes comprising the method are useful to recover spent catalysts used in the petroleum and chemical processing industries. The method generally involves the use of an aqueous leaching solution to leach catalytically active metals from the spent catalyst so that solid carbon built up on the catalyst may be separated from the catalyst metals. The recovered catalyst metals, or a catalyst formed therefrom, may then be re-used in a catalytic conversion process.

公开(公告)号：US20230257280A1

公开(公告)日：2023-08-17

申请号：US17744018

申请日：2022-05-13

Applicant: Chevron U.S.A. Inc.

Inventor： Rahul Shankar BHADURI ,  Oleg A. MIRONOV ,  Alexander E. KUPERMAN

IPC: C01G39/02 ,  C01G39/00 ,  C01G31/00 ,  C22B7/00

CPC classification number: C01G39/02 ,  C01G39/006 ,  C01G31/006 ,  C22B7/009

Abstract: An improved method for recovering metals from spent supported catalysts, including spent supported hydroprocessing catalysts. The method and associated processes comprising the method are useful to recover spent supported catalyst metals used in the petroleum and chemical processing industries. The method generally involves a combination of a pyrometallurgical and a hydrometallurgical method and includes forming a potassium carbonate calcine from the spent supported catalyst containing Group VIIIB/Group VIB/Group VB metal compound(s) combined with potassium carbonate, and extracting and recovering soluble Group VIB metal and soluble Group VB metal compounds from the potassium carbonate calcine.

公开(公告)号：US20200048566A1

公开(公告)日：2020-02-13

申请号：US16533545

申请日：2019-08-06

Applicant: Chevron U.S.A. Inc.

Inventor： Theodorus Ludovicus Michael MAESEN ,  Derek BLACKWELL ,  Viorel DUMA ,  Varut KOMALARAJUN ,  Alexander E. KUPERMAN ,  Hyunuk RYU ,  Horacio TREVINO ,  Alex YOON ,  Ujjal MUKHERJEE

IPC: C10G47/20 ,  C10G47/34 ,  B01J31/22 ,  B01J31/02

Abstract: A catalyst system has been designed that disrupts the sedimentation process. The catalyst system achieves this by saturating key feed components before the feed components are stripped into their incompatible aromatic cores. The efficacy of this disruptive catalyst system is particularly evident in a hydrocracker configuration that runs in two-stage-recycle operation. The catalyst is a self-supported multi-metallic catalyst prepared from a precursor in the hydroxide form, and the catalyst must be toward the top level of the second stage of the two-stage system.