Grain dryer with air recycling ducts

Details Grain dryer with air recycling ducts Grain dryer with air recycling ducts

1976-08-02

1978-01-10

Sprague, Kenneth W.

Drying and gas or vapor contact with solids

Apparatus

For diverse operations on treated material

34169, 34170, 34212, 98 56, F26B 1712

Patent

active

040671208

ABSTRACT:
A concurrent-countercurrent air flow grain dryer of the type having an enclosed bin with a wet grain inlet at the top and a dry grain outlet at the bottom includes means for introducing hot air near the top of the bin to serve as a drying medium for the grain in a flow concurrent with the grain. Means are provided at the bottom of the bin to introduce cool air which flows countercurrent to the grain flow. An exhaust is provided intermediate where the hot and cool air are introduced. A manifold for the exhaust directs parts of the exhaust air through the hot air inlet portion of the dryer. In this manner, at least a portion of the exhaust air is recycled prior to ultimate exhaust from a vent associated with the exhaust manifold.

REFERENCES:
patent: 1669012 (1928-05-01), Nordstrom
patent: 2740204 (1956-04-01), Seltzer et al.
patent: 3710449 (1973-01-01), Rathbun
patent: 4006536 (1977-02-01), Meiners

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