Process and plant for continuous drying using heat pumps

Details Process and plant for continuous drying using heat pumps Process and plant for continuous drying using heat pumps

1984-03-19

1987-03-03

Makay, Albert J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 35, 34 86, 34228, 34230, F26B 304

Patent

active

046464476

ABSTRACT:
A process and a plant for continuously drying products with the use of increasing temperatures towards the end of the drying process, the drying process using the so-called multiple transverse stirring. There is admitted in the zone of completion of the drying process a first air flow (4), the additional or major air flow being admitted in a zone (5) where the product has lost most of its moisture content, the first air flow being heated at 8(III) to a high temperature, the additional air flow (5) being heated to a mean temperature (11) and the entire air flow being subjected to heat inputs 8(I) at a mean temperature derived from at least one heat pump (13) The invention reduces the heat input required for such a process.

REFERENCES:
patent: 2149813 (1939-03-01), Lindstrom
patent: 2326115 (1943-08-01), Arthur
patent: 4003139 (1977-01-01), Van Winkle
patent: 4126946 (1978-11-01), Buffington
patent: 4205456 (1930-06-01), Ayers et al.
patent: 4299036 (1981-11-01), Schregenberger
patent: 4336279 (1982-06-01), Metzger

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