Method and apparatus for extracting heat from a powdered water-a

Details Method and apparatus for extracting heat from a powdered water-a Method and apparatus for extracting heat from a powdered water-a

1981-09-03

1983-03-29

Capossela, Ronald C.

Refrigeration

Liquid contacting discrete commodity

With article conveyer or transporter

34104, 239102, F25D 1702

Patent

active

043779379

ABSTRACT:
Spray nozzles (16, 18, 20) inject just sufficient water to produce the desired cooling of hot powdered substance by evaporation of the water. The water is sprayed finely and uniformly onto said substance to avoid wet lumps agglomerating. The substance comes from a hopper (2), and flows through the apparatus in the opposite direction to a drying gas flow from inlet (21) to a condenser (22) where the heat is recovered from the water vapor.
Application to recycling foundry sand and, more generably, to using sand which has been heated.

REFERENCES:
patent: 1844782 (1932-02-01), Mittag
patent: 2863190 (1958-12-01), Buhrer
patent: 3089653 (1983-05-01), Ostberg
patent: 3161485 (1964-12-01), Buhrer
patent: 3172177 (1965-03-01), Brauchla
patent: 3205543 (1965-09-01), Morris et al.
patent: 3412477 (1968-11-01), Kayatz

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