Abstract
A chemical kinetic model is developed for the non-catalytic reduction of nitric oxide (NO) by hydrazine (N2H4). Since the reduction of NO was observed in an experimental reaction with N2H4, the hydrazine has been suggested as a new reductant of NO in addition to the conventional ammonia, urea and isocyanic acid. In the proposed kinetic model, a set of fifty one chemical reactions that includes the various branching reactions of N2H4 to NH2 and the wellknown reaction NO+NH2→N2+H2O is simultaneously considered with the usual partial equilibrium assumptions. The NO reduction is estimated to occur at a temperature range between 700K and 1400 K, which is wider and lower than in the conventional Thermal DeNOx process. The maximum amount of the reduced NO is slightly less than that in the Thermal DeNOx. The effects of the other input parameter on the NO reduction rate also discussed.
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