Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1980-03-17
1981-11-17
Camby, John J.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 57A, 432 15, 432 58, F26B 308, F26B 1700, F27B 1500
Patent
active
043002919
ABSTRACT:
A method and apparatus are provided for heating and/or drying particulate materials such as coal wherein the particulates are fed into a direct heating fluidizing chamber, carried in a stream of heated oxygen-free gas at a temperature sufficiently high to heat the particles to a preselected temperature. The particles are then removed from the gas stream at the preselected temperature and then the gas is reheated in a heat exchanger and recycled. Where the particulate material to be dried yields a vapor, such as steam, the vapor is used as the transport or fluidizing gas. Means are provided for removing and/or condensing such vapor beyond the amount needed for fluidization.
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Heard Harold
Wilt Charles R.
Camby John J.
Salem Corporation
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