Dryer

Details Dryer Dryer

1978-09-21

1980-03-04

Camby, John J.

Heating

Tumbler-type rotary - drum furnace

Having combustion products generated in or fed to drum

432112, 432113, F27B 708

Patent

active

041915305

ABSTRACT:
A dryer for removing moisture from wet fine particles, such as coal, comprising an insulated stationary cylinder in which an open-ended metallic cylindrical tube is rotated, coaxially in an essentially horizontal position. Wet particles are introduced in said open end while hot air is circulated between the stationary cylinder and the tube.
Substantial improvement in the overall efficiency is obtained by recirculating some of the spent products of combustion into the rotary drying cylinder as well as in a preheater or heat exchanger to heat the air used for combustion.

REFERENCES:
patent: 2500553 (1950-03-01), Lykken
patent: 3013785 (1961-12-01), King
patent: 3401923 (1968-09-01), Bearce
patent: 4014106 (1977-03-01), Bearce

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