Method and apparatus for drying a solid material wetted with a solvent or solvent mixture
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United States of America Patent
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Nov 11, 1986
Grant Date -
N/A
app pub date -
Dec 12, 1984
filing date -
Dec 19, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method of drying a solid wetted with a solvent or solvent mixture by causing superheated vapour of the solvent or solvent mixture as a carrier medium to flow through the material to be dried in an evaporation room, the solvent or solvent mixture evaporating and being carried along with the carrier medium, and by then causing the evaporated solvent or solvent mixture to condense from the carrier medium, if desired after compression thereof, in a cooling device. During this drying process a sub-ambient pressure is provided in the evaporation room and the temperature in the evaporation room is controlled by adjusting the sub-ambient pressure, if desired, in combination with an additional temperature controlling means. The inventiona also relates to a device for using the above method.
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