| 摘要 |
PROBLEM TO BE SOLVED: To safely and efficiently recover a chlorinated saturated hydrocarbon by bringing a gas containing chlorinated saturated hydrocarbon into contact with a specific absorbing liquid to the chlorinated saturated hydrocarbon be absorbed in the absorbing liquid. SOLUTION: This method for recovering a chlorinated saturated hydrocarbon is performed by bringing (A) mixed gas containing (i) a vapor or a gas of preferably a 1-4C chlorinated saturated hydrocarbon (e.g. chloromethane) and (ii) at least one kind of gas selected from a vapor, a steam, a nitrogen gas and an oxygen gas into contact with (B) an absorption liquid at least one kind of (iii) a compound selected from an aromatic compound (e.g. dodecylbenzene) and a naphthene-based hydrocarbon and having >=180 deg.C, preferably >=200 deg.C, more preferably >=400 deg.C boiling point to absorb the component (i) into the component B. Preferably, a content of the component (i) in the component A is preferably >=20 vol.%. Preferably, a content of the component (iii) in the component B is preferably >=20 wt.%.
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