AIR CLEANING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an air cleaning method capable of efficiently cleaning the air containing soot, dust and nitrogen oxides (NOx) such as nitrogen monoxide (NO) and nitrogen dioxide (NO2) and also suppressing the discharge of a harmful material such as ozone in addition to the NOx by a simple device constitution and low energy and to provide a device therefor. SOLUTION: An electric precipitator 1 removing the soot and dust in the air to be treated and an adsorption reaction tank 2 provided at its following stage and having an adsorbent consisting essentially of either of TiO2, ZnO and mordenite are provided, and the concentration ratio of NO2 is increased compared with that at the beginning by oxidizing the NO in the air to be treated to the NO2 by ettectively using the ozone generated at the electric precipitator 1 and equal mole of the NO and the NO2 are adsorbed at the adsorbent.