| 摘要 |
PURPOSE:To make efficient non-polluting treatment of a volatile org. halogen compd. by providing metal-deposited catalyst packed beds in multiple stages and adding the volatile org. halogen compd. before the respective stages and successively passing the compd. through the packed beds. CONSTITUTION:Gas mixing chambers A are provided in front of the catalyst beds B in the respective stages connected in series. A reducing agent, such as gaseous hydrogen, is first added to a volatile org. halogen compd.-contg. gas and/or water to cause the reduction decomposition of the volatile org. halogen compd. The gas or the water is then passed through the catalyst beds B packed with the metal-deposited catalysts, such as platinum or palladium, and the same operation is successively repeated. The required amt. of the reducing agent is decreased by suppressing the disturbance of coexisting oxygen in such a manner. |
