| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic solvent-containing gas treatment system efficiently recovering an organic solvent.SOLUTION: This organic solvent-containing gas treatment system includes: a concentration device having an adsorption part which performs adsorption in an adsorption element 1 containing an adsorbing material and generates a clear gas, and a desorption part which makes a gas having a temperature higher than an organic solvent-containing gas pass through the adsorption element 1, and desorbs the organic solvent adsorbed on the adsorption element 1 to generate a desorption gas; and a recovery device wherein an adsorption element 11 containing an adsorbing material comprises at least a raw gas adsorption region 21, an additional adsorption region 22, a first desorption region 23, a second desorption region 24, and a cooling region 25 to form a circulation path, wherein nitrogen gas is sealed in a gas line of the first desorption region 23, and which has a function of returning the organic solvent-containing treatment gas having passed without being adsorbed on the raw gas adsorption region 21 to an adsorption region of the concentration device, and recovers all or a part of the desorption gas desorbed from the first desorption region 23 in a condenser 8. |
