Process for the production of medicinal white oil using M41S and sulfur sorbent

US6723229B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Sylvain Hantzer · Prairieville, US
• Jean W. Beeckman · Columbia, US
• Stephen J. McCarthy · Center Valley, US
• Arthur P. Werner · Alexandria, US

Key dates

• Filing date: Feb 27, 2002
• Grant date: Apr 20, 2004
• Expiry date: Jun 13, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A four stage process for producing high quality white oils, particularly food or medicinal grade mineral oils from mineral oil distillates. The first reaction stage employs a sulfur resistant hydrotreating catalyst and produces a product suitable for use as a high quality lubricating oil base stock. The second reaction stage employs a hydrogenation/hydrodesulfurization catalyst. The third stage employs a reduced metal sulfur sorbent producing a product stream which is low in aromatics and which has substantially “nil” sulfur. The final reaction stage employs a selective hydrogenation catalyst that produces a product suitable as a food or medicinal grade white oil.