عنوان مقاله [English]
نویسندگان [English]چکیده [English]
A fully kinetic model using selective non catalytic reduction (SNCR) of NOx has been used to reduce the NO in the exhaust of furnaces and incinerators. Ammonia and urea has been applied as reagents in the model. In considered method a reduced mechanism has been used and the results have been compared with the results of the experimental and numerical studies in the references. The comparison reveals good agreements between the results. The optimum concentration of injected reagent has been achieved for specified operating conditions and reagent slip. Comparing the results of the model by two reagents, ammonia and urea, the optimum concentration of ammonia is obtained in lower temperatures than the urea one. Moreover, using lower concentrations of NH3 results higher reduction efficiency of NO in comparison with urea. In addition, in the same concentrations of reagent the reduction efficiency of ammonia is higher. Also, the destruction of increasing the temperature of injection in the case of ammonia as a reagent is much higher than the urea one. Increasing the temperature will decrease the reduction of NO severely, but in the case of urea as a reagent the destruction of increasing the temperature is lower.