| 摘要 |
<p>PURPOSE:To reduce heat loss in a hot air drying facility by a method wherein highly humid gas, discharged after drying process, is dehumidified by a gas separating film and is circulated again into the drying processing unit of a material to be processed as gas for drying. CONSTITUTION:Air for drying, which flows out of a heat exchanger 12, is blown against strip copper plates 16, penetrating through a processing material receiving unit 15 in a drying chamber 14. Wet gas, blown against the strip copper plates 16, flows out of the drying chamber 14 and is supplied to a water vapor separator 13 through a blower 11 after becoming gas proximated to the saturating condition of about 90-100 deg.C. The water vapor separator 13 is provided with a gas separating film 17 and removes the water vapor corresponding to the total amount evaporated from the strip copper plates 16 and the like selectively. Dry gas, not permeated through the gas separating film 17, enters a heat exchanger 12 and the temperature of the same is risen to about 120 deg.C without causing deterioration of temperature substantially.</p> |
