Selective hydroprocessing and mercaptan removal

US7244352B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Thomas R. Halbert · Baton Rouge, US
• Craig A. McKnight · Sherwood Park, CA
• John P. Greeley · Fairfax, US
• Bruce R. Cook · Aurora, US
• Garland B. Brignac · Clinton, US
• Mark A. Greaney · Upper Black Eddy, US
• Robert C. Welch · Baton Rouge, US

Key dates

• Filing date: Feb 7, 2003
• Grant date: Jul 17, 2007
• Expiry date: Jun 7, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L1/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.