Process and apparatus for drying and preheating of coking...

Details Process and apparatus for drying and preheating of coking... Process and apparatus for drying and preheating of coking...

C - Chemistry, Metallurgy

10

B

202/10

C10B 57/10 (2006.01)

Patent

CA 1123776

ABSTRACT OF THE DISCLOSURE A process and an apparatus for the drying and preheat- ing of coking coal is described, in which a coarser grain frac- tion of the starting coal is separated out at least at one lo- cation in a flight stream tube through which the coal and a heat carrier gas are fed, and in which this larger grain fraction is subsequently reintroduced into the main stream containing only the finer grain fraction of the coal and the predominant portion of the heat carrier gas. The method and the apparatus through which the method may be carried out allow for a single-step pro- cess for both drying and preheating of the coal, make it possible to substantially reduce the length of the flight stream tube neces- sary, and increase the uniformity of the degree of pretreatment of the variously-sized fractions of the starting material.

335591

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