Method for producing hydrogen with reduced CO2 emissions

US9028794B2 · kind B2 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Arthur Darde · Paris, FR
• Solene Valentin · Meudon, FR
• Philippe Court · Houston, US
• Jean-Pierre Tranier · L'Haÿ-les-Roses, FR
• Xavier Traversac · Paris, FR
• Paul Terrien · Newton, US

Key dates

• Filing date: Mar 16, 2011
• Grant date: May 12, 2015
• Expiry date: Mar 16, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for producing hydrogen, with reduced carbon dioxide emissions, from a hydrocarbon mixture. In said method, the hydrocarbon mixture is reformed so as to produce a synthetic gas that is cooled, then treated in a shift reactor so as to be enriched with H2 and CO2. Optionally dried, said mixture is treated in a PSA hydrogen purification unit in order to produce hydrogen. The residue is treated by means of partial condensation with a view to capturing CO4 before said residue is sent as fuel to reforming.