Numerical Simulation of the NO_x Chemical Kinetic Removal by Under Various Reduced Electric Fields

Abstract

In this work, a chemical kinetic analysis of different species involved in nitrogen-oxygen mixed gas treated by stationary negative corona discharge. We take account 16 different chemical species reacting following 120 selected chemicals reactions. The mathematical model used consists of a system of equations that takes into account the variation of the density and the chemical kinetics of the environment. The reaction rate coefficients are taken from the literature. We analyse especially, the time evolution (10⁻⁹–10⁻³ s) of NO, NO₂, NO₃ and N₂O₅ species under different values of electrical field. The results show that the evolution of these nitrous oxides is substantially affected by the application of the electrical discharge. This allows us the important role played by the negative corona discharge in NO_x removing.