Upgrading oil emulsions with carbon monoxide or synthesis gas

US5104516A · kind A · utility

Assignee

• Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources Canada · CA

Inventors

• Theo J. W. de Bruijn · Constance Bay, CA
• H. John Woods · Milton, CA

Key dates

• Filing date: Sep 6, 1990
• Grant date: Apr 14, 1992
• Expiry date: Sep 6, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G9/007
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Several procedures are provided herein which reduce the viscosity and density of heavy oils to make them amenable for transportation by pipeline from the field to refineries for further processing. The procedure involves contacting a water emulsion of a heavy oil with carbon monoxide at a pressure range and a temperature range such that a water gas shift reaction takes place to convert the steam and carbon monoxide to hydrogen and carbon dioxide. Simultaneously, a thermal rearrangement takes place, thereby reducing the viscosity and density of the oil without any significant thermal cracking. Under one scheme, at a low temperature range, e.g. below about 400.degree. C., there is substantailly no cracking and minimal molecular changes. Under another scheme, at a higher temperature range, e.g. up to about 460.degree. C., significant cracking and molecular changes take place. Nevertheless under both schemes there is a net production of hydrogen and carbon dioxide, and both hydrogen and carbon dioxide are separated, and may be used in other processes.