Process of drying a particulate material and apparatus for imple

Details Process of drying a particulate material and apparatus for imple Process of drying a particulate material and apparatus for imple

1985-05-17

1986-09-02

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 92, F26B 506, F26B 1330

Patent

active

046087648

ABSTRACT:
The particles of the particulate material to be dried are cooled before the drying operation proper, or in the initial phase thereof, to a temperature low enough to make the liquid to be extracted solidify. At least the drying operation proper is carried out in a space bounded by a container, in which a gas, more particularly air, is passed through the particles. While in said space, the particles are subjected to motion, for example, they are whirled by the gas to form a whirling layer. The temperature of the gas is adjusted to have at least a considerable part of the drying operation take place by sublimation, the heat energy required for the sublimiation being supplied to the particles at least in part by the gas passed through them. In this way, the particulate material may be dried with care and nevertheless in relatively large batches, and with limited time expenditure.

REFERENCES:
patent: 1461148 (1923-07-01), Hughes
patent: 2402401 (1946-06-01), Hickman
patent: 3394468 (1978-07-01), Zeller
patent: 3436837 (1969-04-01), Abelow et al.
patent: 3513559 (1970-05-01), Eilenberg
patent: 3818605 (1974-06-01), Glatt
patent: 4175334 (1979-11-01), Gibert
patent: 4318771 (1982-03-01), Grab et al.
patent: 4476804 (1984-10-01), Glatt et al.

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