4801 A study of exhaust gas processing systems using plasma discharge

Abstract

Catalyst cannot easily decompose the exhaust gas of diesel engines because of lower exhaust gas temperature. In this study, the decomposition of NO_x in the modulated exhaust gas was studied with plasma discharge reactor as the method. Results showed that NO in N_2 as the dilution gas could be decomposed as much as 80% by this method in an optimized condition, but the decomposition was seriously obstructed by the addition of O_2 in the gas or even NO_x was increased with the increase of O_2 concentration and plasma energy. In addition, it has been understood that the amount of NO_x reduction depends on power consumption and an initial NO level. Moreover the additions of CO_2, HC were studied and analyzed.