Modeling the chemical kinetics of dual pulsed plasma sources for reduction of NOx emission

Abstract

Summary form only given. The remediation of NOx emission from diesel exhaust or gas turbines has been widely studied for atmospheric pollution and human health. In order to reduce exhaust gases, non-thermal atmospheric plasmas, Selective Catalytic Reduction(SCR), and SCR with plasma technology have been use. SCR with plasma technology has the highest efficiency to remove NOx emission. However, because of the high maintenance cost and frequent replacement of catalysts, plasma technology not in combination with a catalyst has been interesting. We investigate the efficiency of NOx reduction by dual pulsed atmospheric air plasma sources. NOx concentration is controlled by the variation of high frequency and low frequency of dual pulsed plasma. In Global simulation, a detailed reaction mechanism about NO, NO2, N2O remediation is proposed with single pulse and dual pulses. Main reactions are use d to develop 1-D fluid and hybrid simulation. In these simulations, spatial distribution of radicals and electron densities is investigated. Major pathway of NOx concentration is presented in different spatial position. In this research, simulation results show that dual pulsed plasma can reduce NOx emission more than single pulsed plasma. It can be a new solution for NOx reduction.