System for drying and heating particulate coal

Details System for drying and heating particulate coal System for drying and heating particulate coal

1976-03-10

1978-04-04

Camby, John J.

Heating

Processes of heating or heater operation

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

34 10, 34 57R, 432 58, F27B 1500, F26B 308, F26B 310

Patent

active

040824985

ABSTRACT:
Wet particulate coal and a current of hot dry gas at superatmospheric pressure are introduced into a substantially closed drying chamber to contact the material with the gas while maintaining the drying chamber under superatmospheric pressure so that the material is dried by the gas. The dried material is withdrawn from the drying chamber and the gas is withdrawn from the drying chamber and itself mixed with a stream of hot dry gas produced by burning a combustible and a combustion-supporting gas. This mixture is then reintroduced into the drying chamber as the current of hot gas used to dry the coal. The burner is operated at superatmospheric pressure and is formed of a jet-pump type injector, and a diffusor is provided downstream of this injector in the circulation path.

REFERENCES:
patent: 3282577 (1966-11-01), Cottle
patent: 3766661 (1973-10-01), Bayens et al.
patent: 3862294 (1975-01-01), Engelhart et al.
patent: 3884620 (1975-05-01), Rammler

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