| 摘要 |
<p>PROBLEM TO BE SOLVED: To continuously recover the mist of an organic solvent to be discharged in the air by a method in which the discharged mist is brought up in a recovery tank passing through the liquid membrane of an organic solvent having the same chemical structure. SOLUTION: The mist of an organic solvent generated from a washing bath 30 is supplied between the storage part 2 of a recovery tank 4 and a porous plate 3 placed above the storage part 2 and brought up by a suction device 16. An organic solvent having the same chemical structure as the mist is made to flow down from the upper part of the porous plate 3 to make a liquid film on the porous plate 3, and the mist is passed through the film. In this way, the mist is dissolved by compatibility and made to fall to a storage part 9 to be recovered. Recovered liquid consisting of the recovered mist and the organic solvent is supplied again from the upper part of the porous plate 3 to contribute to the recovery of the mist. Besides, gas from which the mist is removed is absorbed in water to be removed.</p> |
