| 摘要 |
<p>PURPOSE:To prevent the cylinder mechanism from corrosion by disposing a desorbing gas discharge pipe under a three way change-over valve mechanism and a solvent contg. gas supply pipe above said valve, and changing-over adsorbing and desorbing operations by moving a valve plate with a cylinder rod. CONSTITUTION:A supplied solvent contg. gas is passed through an activated carbon layer 22 where the solvent is adsorbed, and is discharged as a clean gas from a clean gas discharge pipe 23 to the outside of the system. Then, in desorption, the valve plate 26 of the three way change-over mechanism 25 is lifted up by the cylinder rod 27, and the activated carbon layer 22 is desorbed by the heating gas supplied from a desorption gas supply pipe 24, and the desorption gas is discharged through the three way change-over mechanism 25. Thus, as the desorption gas of high temp. and high concn. is not brought into contact with the cylinder rod, the corrosion is prevented.</p> |
