On the emission characteristics of CO and thermal NOx in a gas turbine combustor using coal gaseous fuel, the analysis of the combusition reaction using an kinetics model was conducted. It was revealed that the analyzing results agreed well with the expermental data. In the analyzing method, chemical species of fourteen kinds and elementary reactions equations of twenty-eight types are used for the chemical kinetics in the combustor. An assumption is made that the fuel and air are mixed well instantaneously in each section of the combustor axial direction and a combustion gas temperature is stood for by an adiabatic flame temperature. Decomposition behaviors of the main combustible components (CO, H2) in the combustor and the reaction of thermal NOx formation are revealed through the analyzing method as the follwing. The thermal NOx formation proceeds within 0.1 msec reaction time, it is formed in large quantities in near 1.0 air ratio at which the combustion gas temperature is especially high. The NOx emission concentration of the gas turbine combustor calculated by the analyzing method agreed well with the experimental data.
|Number of pages||8|
|Journal||Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy|
|Publication status||Published - 1992|
- Gas turbine
- Nitric oxides