| 摘要 |
<p>PURPOSE:To efficiently decompose a volatile organohalogen compd. contained in water, waste water or exhaust gas to make the same harmless without bringing about the corrosion of a device or side reaction. CONSTITUTION:A fluid containing a volatile organohalogen compd. is passed through a metal-supported catalyst bed 3 while a reducing agent is added to the fluid and subsequently passed through a heating oxidative decomposition device 5. Hydrogen halide formed by the catalytic reductive decomposition of the volatile organohalogen compd. is stable and not again reacted with the coexisting org. substance to form a side reaction product. Since reductive decomposition reaction is advanced under a low temp. condition in the vicinity of room temp., a problem of the corrosion of a device due to hydrogen halide is suppressed. Hydrocarbon formed by catalytic reductive decomposition can be decomposed into carbon dioxide and water by heating oxidative decomposition (e.g; catalytic thermal oxidative decomposition). In this case, since no acid is formed as a decomposition product, the corrosion of the device is not brought about even under a heating condition.</p> |
