초록
N2O is hazardous atmosphere pollution matter which can damage the ozone layer and cause green house effect. There are many other nitrogen oxide emission control but N2O has no its particular method. Preventing further environmental pollution and global warming, it is essential to control N2O emission from industrial machines. In this study, the thermal decomposition experiment of N2O gas mixture is conducted by using cylindrical reactor to figure out N2O reduction and NO formation. And CHEMKIN calculation is conducted to figure out reaction rate and mechanism. Residence time of the N2O gas in the reactor is set as experimental variable to imitate real SNCR system. As a result, most of the nitrogen components are converted into N2. Reaction rate of the N2O gas decreases with N2O emitted concentration. At 800℃ and 900℃, N2O reduction variance and NO concentration are increased with residence time and temperature. However, at 1000℃, N2O reduction variance and NO concentration are deceased in 40s due to forward reaction rate diminished and reverse reaction rate appeared.