Process and apparatus for the thermal treatment of coal

US4280033A · kind A · utility

Assignee

• Didier Engineering GmbH · DE

Inventors

• Dietrich Wagener · Essen, DE
• Fach Horst · Essen, DE
• Hayri Ergun · Essen, DE

Key dates

• Filing date: Mar 22, 1979
• Grant date: Jul 21, 1981
• Expiry date: Mar 22, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L9/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Coal, particularly ground coal, is thermally treated at a treatment zone by exposing the coal to microwave radiation, preferably at a frequency of from 20 to 3,000 MHz. The treatment zone may be a system for forming the coal into pellets or briquettes. The treatment zone may also be an area between a coal supply bin and a furnace or oven for utilization of the coal, whereby the coal is dried and/or preheated before use in the furnace or oven.