Kinetic modeling of the interactions between NO and hydrocarbons at high temperature

This paper presents a general and detailed chemical kinetic scheme developed and validated to investigate the interactions between NO and simple hydrocarbons during thermal oxidation and reburning. In a previous paper [1] the low temperature mechanism was presented. In this work the attention is drawn on the high-temperature conditions, referring typically to the reburning process where the hydrocarbon fragments reduce NO to HCN and N-2. The goal is to obtain a better understanding of the interactions between NO and hydrocarbons, through the development of a general detailed kinetic model, which describes accurately the influence of NO in a wide temperature range, for different fuels and stoichiometry conditions. The model has been validated through the comparison with experimental measurements coming from different research groups, referring to several hydrocarbon fuels in different operative conditions. Even though the characteristic mechanisms are quite different from the low temperature conditions, the observed agreement in the whole investigation range confirms the correctness of the kinetic assumptions and extends the reliability of the model. (C) 2003 The Combustion Institute. All rights reserved.