Process and apparatus for preheating coking coal

Details Process and apparatus for preheating coking coal Process and apparatus for preheating coking coal

C - Chemistry, Metallurgy

10

B

202/40

C10B 49/08 (2006.01) C10B 57/08 (2006.01)

Patent

CA 1134773

ABSTRACT OF THE DISCLOSURE Coking coal is preheated and dried by passing hot vapors into a generally vertical flue channel, then passing comminuted coal into the same channel, the vapors being blown with a flow speed to move the coal upwards in the channel and passing at about the midpoint of the channel a mixture of hot combustion gases and additional hot vapors branched off from the other hot vapor line into the flue channel so as to cause further heating and moving of the coal, the further heating being carried out in a uniform and gentle manner. At the end of the flue channel the coal and vapors are separated and the coal is recovered while the vapors are recycled into a blower and therefrom into the vertical flue channel with a branch leading part of the vapors into a mixing chamber with the combustion gases so as to lower the temperature of the combus- tion gases when the same are passed into the flue channel. -1-

321546

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