METHOD AND DEVICE FOR CLEANING WASTE GAS

摘要

PROBLEM TO BE SOLVED: To provide a waste gas cleaning method and a waste gas cleaning deice which is effectively applied to the relatively low temperature waste gas that oxygen concentration is high and at least nitrogen monoxide is contained and which the cost is reduced and the efficiency is high. SOLUTION: In the waste gas cleaning method in which the waste gas containing oxygen and nitrogen monoxide is passed through discharge plasma, the waste gas is brought into contact with an adsorbent layer having reducing catalytic activity at least one part region in the discharge plasma or poststage part region. The waste gas cleaning device is characterized in that a smooth electrode is provided at the outer peripheral wall surface part of an electrically insulating hollow cylindrical body provided at a waste gas line and a metallic wire electrode is provided respectively at the central part, and a discharge plasma generating part is formed by applying pulsed high voltage or alternating high voltage between both electrodes, and also the adsorbent layer having reducing catalytic activity is provided at least one part region in the hollow cylindrical body of the discharge plasma generating part.