| 摘要 |
<p>PURPOSE:To recover efficiently an organic solvent from an exhaust gas by treating preliminarily a gas contg. low-concn. solvent with a rotary type exhaust gas treating apparatus consisting of a cylinder wherein a sheet-shaped adsorbent is bent to a corrugated shape and the respectively independent venting holes are formed in the direction of a rotation shaft and making the gas uniformly condensed gas. CONSTITUTION:A gas A contg. a low-concn. solvent is introduced into a condensation apparatus 1 constituted by rotating the following cylindrical body 11 in the direction shown by an arrow L wherein a sheet adsorption member 22 such as the fibrous activated carbon is formed into a corrugated shape to form the many venting holes and discharged as the purified air B by adsorbing and removing the solvent. On the other hand, air C for the desorption is introduced into the apparatus 1 as the heated air C' via a filter 3, a heat exchanger 4 and a hot air generator 6. After cooling a gas D contg. high-concn. solvent which is conducted out of the apparatus 1 in a heat- exchanger 4 and a cooler 7, it is fed to a recovery apparatus 2 packed with activated carbon as a condensed gas D' to adsorb the solvent only. The adsorbed solvent is desorbed with steam G, condensed and liquefied in a condenser 10' and recovered.</p> |
