放電脱硝におけるラジカル密度の低圧力場での測定と放電化学反応計算 : 熱工学,内燃機関,動力など

概要

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In a discharge denitrification process where discharge electrons collide with combustion gas to produce N, O, OH and H radicals, the produced radical is said to be a key factor which decides the denitrification performance through the oxidization and/or the reduction of NO_x. In this study N, O, OH and H radical densities have been measured by the appearance mass spectrometry in a low-pressure discharge tube In which the simulated combustion gas flows. The radical densities of about 10^<11>-10^<12> cm^<-3> have been measured at the outside of cathode fall region when the s-n ratio is high. Boltzmann's equation for the electron energy distribution function has been solved numerically under conditions of the measured electric field and the experimental gas composition, and the denitrification chemical reactions have been calculated kinetically including the produced radical densities. The measured radical densities agree well with the analytical which correspond to the same electron density as the measured by the Langmuir probe.
一般社団法人日本機械学会の論文
2001-09-25