Drying apparatus
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United States of America Patent
Stats
-
Aug 2, 1994
Grant Date -
N/A
app pub date -
Jul 30, 1993
filing date -
Aug 7, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drying apparatus for continuous product webs which contain solvents becoming volatile during drying, the drying apparatus has a dryer having means for transporting a treatment medium, an inlet slot and an outlet slot, and nozzle boxes provided at both sides of the inlet slot and the outlet slot, a cooling tunnel directly connected with the dryer, a combustion chamber for thermal combustion of a solvent which becomes volatile during drying, a first heat exchanger and a second heat exchanger, each having a primary side and a secondary side, a fireplace, a waste gas channel extending from the dryer through the secondary side of the first heat exchanger to an inlet of the combustion chamber and then from an outlet of the combustion chamber through the primary side of the first heat exchanger and the primary side of the second heat exchanger to the fireplace, a suction tube extending from the cooling tunnel, a conduit connected with the nozzle boxes through the secondary side of the second heat exchanger provided for pre-heated treatment air. The outlet of the combustion chamber is provided with a connection to the dryer, and the suction tube is provided with a suction blower which is connected at a pressure side with the secondary side of the second heat exchanger.
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