Product reclamation in a fluid bed dryer

Details Product reclamation in a fluid bed dryer Product reclamation in a fluid bed dryer

1979-11-07

1981-06-16

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 57A, 34 57D, F26B 308

Patent

active

042728959

ABSTRACT:
A fluid bed dryer utilizing a rotating air distribution disc to deliver rotating streams of air to the fluid bed includes salvage apparatus which accumulates, concentrates and returns particulate material which falls from the fluid bed during the drying operation to the fluid bed. A salvage ring is mounted below and completely encircles the disc to receive and accumulate particles of material which fall from the fluid bed to the disc and are flung from the disc by centrifugal force. A collector which is positioned within the salvage ring and driven by the disc, sweeps the internal area of the salvage ring to concentrate the accumulated particles of material and deliver them to a funnel which is connected to a passageway leading back to the fluid bed. The collected particles of material are returned to the fluid bed by air pressure created by pressure differentials within the dryer apparatus.

REFERENCES:
patent: 3305939 (1967-02-01), Sonnenschein et al.
patent: 3306236 (1967-02-01), Campbell
patent: 3849900 (1974-11-01), Dale et al.
patent: 4051603 (1977-10-01), Kern, Jr.

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