| 摘要 |
<p>PURPOSE: To efficiently perform a waste gas treatment by fixing an adsorption and desorption device containing fibrous active coal and a solvent recovery system by which an adsorbed solvent is made into vapor and is condensed together with water vapor and water is separated from the condensed solvent, and connecting both with a closed circulation path. CONSTITUTION: Solvent-containing gas enters from a conduit 20 to adsorption casings 3a, 3b, and the solvent is adsorbed with the fibrous active coal layers 5. The active coal layer 5 is freely detachable together with a drawing 4. Air shutters 1, 2 are closed at a detaching time, and the air in a closed circulation path is heated with a heater 14 and fed to the adsorption casings 3a, 3b with a blower 8. Besides, it is heated with electric resistances 6 to desorb the solvent, and the solvent vapor is condensed together with water vapor with a condenser group 10, so that water is separated from the solvent with a separator 12 and the solvent is recovered into a solvent tank 13 and the water is removed from an overflow pipe 12.</p> |
