Process for drying coal in two-stage flow-through circulation he

Details Process for drying coal in two-stage flow-through circulation he Process for drying coal in two-stage flow-through circulation he

1977-08-30

1979-11-20

Camby, John J.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

34 10, F27B 1500

Patent

active

041749464

ABSTRACT:
Coal is dried by passing it successively to two tubular 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 element, the hot vapors received from the outlet end of the first heating element being recirculated after mixing them with fresh combustion 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.

REFERENCES:
patent: 3238634 (1966-03-01), Goins
patent: 3884620 (1975-05-01), Rammler
patent: 4082498 (1978-04-01), Offergeld et al.

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