| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an organic solvent recovery method for recovering an organic solvent from an organic solvent gas-containing gas released from a vent part of a facility for producing polycarbonate resin or polycarbonate oligomers by adsorbing the organic gas solvent with activated carbon at a high recovery efficiency of the organic solvent gas with an extremely slight deterioration in the adsorption ability of the activated carbon. <P>SOLUTION: The organic solvent recovery method for recovering an organic solvent from an organic solvent gas-containing gas discharged out of the polycarbonate resin production process is carried out by (I) bringing the organic solvent gas-containing gas into contact with a liquid (contact step), (II) adsorbing the organic solvent in an activated carbon by sending the obtained organic solvent gas-containing gas into an activated carbon adsorption tank (adsorption step), and (III) recovering the organic solvent adsorbed by the activated carbon (recovery step). <P>COPYRIGHT: (C)2004,JPO</p> |
