Process for reducing sulfur and olefin contents in gasoline

US7341657B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC · CN

Inventors

• Dadong Li · Beijing, CN
• Yulin Shi · Nanjing, CN
• Yunjian Hu · Beijing, CN
• Yuanbing Xi · Beijing, CN
• Mingfeng Li · Lo Wu, CN
• Yahua Shi · Beijing, CN

Key dates

• Filing date: Dec 22, 2003
• Grant date: Mar 11, 2008
• Expiry date: Feb 27, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a process for reducing sulfur and olefin contents in gasoline, comprising contacting gasoline feedstock and hydrogen with a hydrorefining catalyst and an paraffin-modification catalyst. The effluent of the process is separated to obtain a hydrotreated gasoline fraction free of mercaptan and having a low content of sulfur, e.g. less than 200 ppm, a low content of olefins, e.g. less than 20% by volume, and little octane loss. The hydrotreated gasoline fraction can be used as blending component of a final gasoline product.