| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an organic solvent recovery system having improved cleaning ability for raw gas and improved efficiency of recovery of an organic solvent.SOLUTION: The organic solvent recovery system comprises the following A and B. A : A solvent recovery device includes a circulation path for circulating carrier gas, a first adsorption-desorption processing device 11 including a first adsorption-desorption element 12 for adsorbing and desorbing the organic solvent and a first condensation recovery device 13 for recovering the organic solvent by condensing, and further includes first temperature adjustment means 15 for increasing the temperature of the carrier gas discharged from the condensation recovery device to high temperature, and transfers the organic solvent to the carrier gas by contacting the high temperature carrier gas with the adsorption-desorption element, thereby condensing the organic solvent, and liquefying and recovering the organic solvent. B : A backup processing device rotates a cylindrical adsorber, causes a second adsorption-desorption element 22 passing through a desorption part to adsorb the organic solvent leaked in processed gas, discharges the desorption concentrated gas by blowing desorption heating gas to the second adsorption-desorption element which has adsorbed the organic solvent, and introduces the desorption concentrated gas to the raw gas of the organic solvent recovery device.</p> |
