Production of low sulfur/low aromatics distillates

US6824673B1 · kind B1 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Edward S. Ellis · Berkeley Heights, US
• Henry Jung · Summit, US
• William E. Lewis · Baton Rouge, US
• Larry L. Iaccino · Seabrook, US
• Michele S. Touvelle · Baton Rouge, US
• Gordon F. Stuntz · Baton Rouge, US

Key dates

• Filing date: Apr 20, 2000
• Grant date: Nov 30, 2004
• Expiry date: Apr 20, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G65/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing distillate boiling range streams that are low in both sulfur and aromatics. A distillate feedstock is treated in a first hydrodesulfurization stage in the presence of a hydrogen-containing treat gas and a hydrodesulfurization catalyst, thereby resulting in partial desufurization of the stream. The partially desulfurized distillate stream is then treated in a second hydrodesulfurization stage, also in the presence of a hydrogen-containing treat gas and a hydrodesulfurization catalyst. The hydrogen-containing treat gas is cascaded from the next downstream reaction stage, which is an aromatics hydrogenation stage.