Process for drying coal in two-stage flow-through...

Details Process for drying coal in two-stage flow-through... Process for drying coal in two-stage flow-through...

F - Mech Eng,Light,Heat,Weapons

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F26B 3/04 (2006.01) C10B 57/08 (2006.01) F26B 17/10 (2006.01) F26B 23/02 (2006.01)

Patent

CA 1081942

ABSTRACT OF THE DISCLOSURE Coal is dried by passing it successively to two tubu- lar flow-through circulation heating elements together with a heat carrier gas, withdrawing the partially dried coal emanating from the first heating element and passing it into the inlet end of the second heating element and recovering the substantially dry coal from the gas and coal mass emanating from the second heating ele- ment, the hot vapors received from the outlet end of the first heat- ing element being recirculated after mixing them with fresh combus- tion gases into the second heating element and the heat carrier gas emanating from the second heating element after separation of the coal therefrom being passed after mixing with fresh combustion gases into the first heating element. -1-

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