Abstract: A compact organic solvent recovery system includes a backup treatment apparatus for environmentally safe treatment of an organic solvent leaking into a gas exiting an adsorption tower packed with an adsorbing material such as particulate active charcoal or active carbon fiber. Adsorption treatment of organic solvents includes introducing an organic solvent containing gas to be treated into an organic solvent recovery apparatus including an adsorption tower packed with adsorbing material. By subsequently introducing steam into the adsorption tower, the organic solvents are desorbed. By introducing the treated gas discharged from the organic solvent recovery apparatus into the backup treatment apparatus, the organic solvents leaking into the treated gas are adsorbed, and the gas treated in the backup treatment apparatus is simultaneously discharged as purified gas.

Abstract: Apparatus for recovering high-boiling point solvents which comprises: a honeycomb-structured rotor 1 having an adsorbent supported thereon; a separator 3 for partitioning the neighborhood of each end face of the rotor into two regions, adsorption zone 5 and desorption zone 4; fan means F.sub.1 that supplies the adsorption zone 5 with air containing a solvent boiling at 150.degree. to 300.degree. C. and which causes part of the clean gas effluent a from the opposite end face of the rotor to be released into the air atmosphere while the remainder is supplied into the desorption zone 4; heating means H for heating the clean gas; cooling means C for separating a solvent enriched gas S into a liquefied product L to be recovered and a cooled lean gas V; and return means F.sub.2 for turning the cooled lean gas V back to the feed gas.