Method of producing hydrogen-rich gas

US5066476A · kind A · utility

Assignee

• Krupp Koppers GmbH · DE

Inventors

• Rolf Wetzel · Heiligenhaus, DE
• Bernhard Firnhaber · Essen, DE

Key dates

• Filing date: Jul 6, 1990
• Grant date: Nov 19, 1991
• Expiry date: Jul 6, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A gas with a hydrogen content of at least 85 volume percent of partial oxidation crude gas is produced in a method including cooling of the gas after waste heat boiler of a gasifier by adding converted circulating gas in a quenching zone. The resulting gas mixture after corresponding gas treatment is subjected to a CO-conversion and then separated into a circulating gas partial stream and a product gas partial stream. The circulating gas partial stream is supplied back after a corresponding compression to the quenching zone, while the product gas partial stream after a so-called acid gas washing is subjected to a further gas treatment in correspondence with a desired use.