Process for preparing a H2-rich gas and a CO2-rich gas at high pressure

US6838071B1 · kind B1 · utility

Assignee

• Den Norske Stats Oljeselskap A.S. · NO

Inventors

• Ola Olsvik · Trondheim, NO
• Roger Hansen · Trondheim, NO
• Arne Grislingås · Trondheim, NO
• Erling Rytter · Trondheim, NO

Key dates

• Filing date: Sep 14, 1999
• Grant date: Jan 4, 2005
• Expiry date: Sep 14, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention comprises a method for production of a CO2-rich gas stream and a H2-rich gas stream, the method comprising the following steps: a) natural gas and water are fed to a reforming reactor and are converted to synthesis gas under supply of a O2-containing gas: b) the gas stream from a) is shifted, whereby the content of CO is reduced and the amounts of CO2 and H2 are increased by reaction of H2O; c) the gas stream from b) is separated in a separation unit into a CO2-rich and a H2-rich gas stream, respectively. The invention also concerns the use of a CO2-rich gas stream for injection into marine formations, and the use of a H2-rich gas stream for hydrogenation, as a source of energy/fuel in fuel cells or for production of electricity.