Process for thermal treatment of finely divided solid fuel

Details Process for thermal treatment of finely divided solid fuel Process for thermal treatment of finely divided solid fuel

C - Chemistry, Metallurgy

10

J

48/37

C10J 3/46 (2006.01)

Patent

CA 1151874

Abstract of the Disclosure The process for a thermal treatment of a finely divi- ded solid fuel according to the present invention comprises drying said fuel and a two-step pyrolysis thereof, followed by separation of the resulting vapour-gas products and coke fines. According to the invention, drying of said fuel is effected using a portion of said hot coke fines; at least a portion of the remaining coke fines is additionally heated to a temperature of from 800 to 1,500°C by gases and/or a partial combustion of said coke fines, whereafter said heated coke fines are separated from the gases and gasified with steam resulting from drying of said fuel; thereafter the resulting gasification products are separated from the coke fines which are employed as a heating agent supplied to the first step of pyrolysis.

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