F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
34/46
F26B 3/02 (2006.01)
Patent
CA 1268941
ABSTRACT A closed intermittent process for drying a moist material, in which process gas is circulated internally for transporting vapour formation heat and water vapour out of the material, said water vapour being condensed from a cooled mixture of gas and water vapour, and for heating the material to be dried. The material is stored in at least two essentially equally large lots (31, 32), each in one essentially gastight cham- ber (1, 2). Through one lot (31) there is conducted alternately during a cooling/drying cycle a first circulating gas flow (11) cooled against a cooling medium flow and, during an equally long heating cycle, a second circulating gas flow (12) heated against a heating medium flow. Through the other lot (32), there is conducted simultaneously, reversely and al- ternately during a heating flow, a third circulating gas flow (22) heated against a heating medium flow and, during a cooling drying cycle, a fourth circulating gas flow (21) cooled against a cooling medium flow.
489521
Gowling Lafleur Henderson Llp
Zeilon Sten Olof
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