Method and apparatus for drying coal

Details Method and apparatus for drying coal Method and apparatus for drying coal

1981-02-20

1982-10-19

Camby, John J.

Heating

Processes of heating or heater operation

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

110224, 432 15, 432 16, 432 19, 432 58, 432 72, F23G 504, F27B 1500, F26B 1512

Patent

active

043548253

ABSTRACT:
A method and apparatus for drying coal in which the coal is dried by a hot gas and then quickly cooled with ambient air to reduce the oxidation rate and in which the air heated in the cooler is supplied to support the combustion that generates the hot gas. The drying gas exhausted from the dryer is utilized to extract coal product, to produce the fuel necessary to generate the hot drying gas and to provide a tempering gas to help maintain the combustor within a desired temperature range. Condensation of the exhaust drying gas is prevented by utilizing the hot gas discharged from the combustor, bypassing the dryer, and supplying it to the exhaust gas at a plurality of different points.

REFERENCES:
patent: 2638684 (1953-05-01), Jukkola
patent: 3858535 (1975-01-01), Shiba
patent: 4324544 (1982-04-01), Blake

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