Process for producing fine-grained coke by degasification of coal

US3962043A · kind A · utility

Assignees

• Metallgesellschaft AG · DE
• Bergwerksverband GmbH · DE

Inventors

• Paul Schmalfeld · Bad Homburg vor der Höhe, DE
• Roland Rammler · Königstein, DE
• Werner Peters
• Erwin Ahland · Essen, DE
• Burkhard Bock
• Joachim W. Lehmann

Key dates

• Filing date: Nov 26, 1974
• Grant date: Jun 8, 1976
• Expiry date: Nov 26, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10B49/16
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Fine-grained coke is produced by the degasification of fine-grained coal by a process which includes the following steps: PA1 A. mixing the coal to be degasified with recirculated, heated, fine-grained coke in a mixing zone; PA1 B. withdrawing gases and vapors produced by degasification from the top portion of an intermediate zone located below the mixing zone and subjecting same to a mechanical dust collection followed by fractional condensation; PA1 C. recovering a dust-containing, highboiling tar fraction and recycling same to the mixing zone; PA1 D. mixing said tar fraction with recirculated hot coke prior to mixing with coal to be degasified; and PA1 E. completely cracking said tar fraction by matching the temperature at which the tar fraction is separated, the rate at which the tar fraction is recycled, and the temperature and quantity of the recirculated hot coke.