Process for the allothermic gasification of coal

US5064444A · kind A · utility

Assignee

• Bergwerksverband GmbH · DE

Inventors

• Helmut Kubiak · Herne, DE
• Hans-Jurgen Schroter · Mühlheim, DE
• Gunther Gappa · Gelsenkirchen, DE
• Heinrich Kalwitzki · Essen, DE
• Klaus Knop · Geldern, DE

Key dates

• Filing date: May 19, 1989
• Grant date: Nov 12, 1991
• Expiry date: May 19, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10J2300/1861
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process is disclosed for allothermic gasification of coal under pressure with water vapor in a gas generator containing heat-exchange tubes for a heat transfer medium. The hot heat transfer medium that enters the gas generator by the heat-exchange tubes is first introduced in the gasification zone, then in the pyrolysis zone. The coal to be gasified flows counter-currently through the gas generator, so that the current of cooled heat transfer medium is used for heating and pyrolyzing the coal, whereas the heat for gasification is taken from the current of the still hot heat transfer medium. Gas generators vertically or horizontally arranged with fitting designs are used for implementation of the process.