Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1980-03-03
1984-11-13
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34102, 34181, 34212, F26B 316
Patent
active
044817215
ABSTRACT:
A body of pulverulent material is confined in a receptacle, and a screw conveyor having a vertical axis conveys a predetermined quantity of the material per unit of time in the upward direction. The amount of the pulverulent material which is being conveyed is such that it fills the space between the turns of the helical conveyor screw of the screw conveyor, which is surrounded by a jacket, only in part, thus leaving a passage in the screw conveyor through which a stream of drying air is conveyed in contact with the pulverulent material so that the drying air withdraws moisture from the material. The rotational speed and/or the pitch or spacing of the consecutive turns of the conveyor screw is so selected that only such an amount of the pulverulent material enters through an opening in the jacket of the screw conveyor while the space between two consecutive turns is juxtaposed with the opening as to only partially fill such a space.
REFERENCES:
patent: 2207360 (1940-07-01), Spellacy
patent: 2634513 (1953-04-01), Ladd et al.
patent: 2799947 (1957-07-01), Elwess
patent: 3913239 (1975-10-01), Burgin
patent: 4142302 (1979-03-01), Primus
Schwartz Larry I.
Striker Michael J.
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