Abstract
A nitric oxide model incorporated into a comprehensive coal combustion model is presented for predicting NO reduction in a 93 kW laboratory-scale single-burner furnace with gaseous fuel reburning. This NO model, including the reburning NO submodel based on “partial equilibrium” approach, requires the solution of only two transport equations to model the behavior of NO reduction in the reburning process. A number of experiments have been performed in the same furnace, and the experimental data obtained from the optimized reburn configuration was used to validate the model. Effects of the critical kinetic parameters on predicted NO concentrations were investigated in this study, and the reburning NO submodel was further evaluated by including more reactions of NO reduction and by comparing with the global reburning model. Profile comparisons show that the predicted temperature and oxygen concentration are overall in good agreement with the measurements, and the general trend of predicted NO concentration is...
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