Hydroprocessing catalysts and methods for making thereof

US8778828B2 · kind B2 · utility

Assignee

• CHEVRON U.S.A. INC. · US

Inventors

• Oleg Mironov · Hercules, US
• Alexander E. Kuperman · Orinda, US
• Rahul Shankar Bhaduri · Moraga, US
• Julie Chabot · Houston, US
• Shuwu Yang · Richmond, US
• Ling Jiao · Albany, US
• Joseph V. Nguyen · Albany, US
• Bruce Reynolds · Martinez, US

Key dates

• Filing date: Dec 20, 2011
• Grant date: Jul 15, 2014
• Expiry date: Jul 17, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. The process employs a pressure leach solution obtained from a metal recovery process as part of the metal precursor feed. In one embodiment, the process comprises: sulfiding a pressure leach solution having at least a Group VIB metal precursor compound in solution forming a catalyst precursor, and mixing the sulfided catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the pressure leach solution is mixed with a hydrocarbon diluent under high shear mixing conditions to form an emulsion, which emulsion can be sulfided in-situ upon contact with a heavy oil feedstock in the heavy oil upgrade process.