| 摘要 |
<p>PURPOSE:To make halogenated hydrocarbons such as CFCs harmless efficiently and accurately in a mild state by a method wherein the halogenated hydrocarbons are irradiated with light energy in the presence of oxygen to react with radical scavenger. CONSTITUTION:The halogenated hydrocarbons contg. CFCs, chloroform and carbon tetrachloride, e.g. 1,1,2-trichloro-1,2,2-trifluoroethane (flon 113) and trichloromonofluoromethane (flon 11), are irradiated with light energy in the presence of oxygen to react with a radical scavenger such as zinc, iron and Devarda's alloy. By this method, the radical rebinding can be prevented accurately and the halogenated hydrocarbons can be efficiently decomposed in its entirety. The aforesaid reaction is conducted in a closed circulation or a flow system, preferably at a temp. of 60-100 deg.C.</p> |
