Method and device for generating fuel for a gas turbine

US9925489B2 · kind B2 · utility

Assignee

• Linde GmbH · DE

Inventors

• Andreas Seliger · Birkenfeld, DE
• Alexander Brandl · Munich, DE

Key dates

• Filing date: Jan 9, 2014
• Grant date: Mar 27, 2018
• Expiry date: Jan 1, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/151
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method is provided for fractionating a feed gas containing hydrogen and carbon dioxide, from which feed gas carbon dioxide is largely selectively removed by scrubbing in a first gas scrubber using a sulphur-free scrubbing agent, wherein a scrubbing agent stream laden with carbon dioxide and co-absorbed hydrogen is obtained which is subsequently expanded in an expansion vessel in order to convert co-absorbed hydrogen into the gas phase. The characterizing feature of the method is that the hydrogen-containing gas phase is drawn off from the expansion vessel and admixed with a sulphur-free gas mixture containing hydrogen and carbon dioxide, which gas mixture arises in a second gas scrubber operated in parallel to the first as a product at a pressure which is lower than the pressure of the feed gas.