Abstract
A description of various experimental and numerical investigation on NOX emissions during the gas fuels combustion is presented. The selection of the validation object is justified. The NOX formation and decomposition mechanisms are analyzed. The assembly of thermal NOX formation and decomposition mechanisms was selected. Validation of the thermal NOX emissions model by CFD-simulation was carried out. Validation is based on comparison of the numerical simulation results with well-known experimental data. The results of numerical simulation are analyzed. A method for improving the NOX emissions computation from the gas fuel combustor is proposed.
Highlights
IntroductionOne of the most promising (for efficiency and environmental indicators) power generating system are integrated gasification combined cycles (IGCC)
One of the most promising power generating system are integrated gasification combined cycles (IGCC)
Validation of the thermal nitrogen oxides (NOx) emissions model is based on a comparison of the calculated results and experimental data published by Hasegawa et al [2]
Summary
One of the most promising (for efficiency and environmental indicators) power generating system are integrated gasification combined cycles (IGCC). During the syngas combustion technologies development the much attention is paid to the environmental indicators of IGCC combustor, namely to nitrogen oxides (NOx) emissions. The results of experimental investigation of NOX emissions during the various gas fuels combustion are presented in [2, 3, 4]. Hasegawa et al [2] experimentally evaluated the effect of nitrogen dilution of oxidant and gas fuel (a mixture of CO and H2) on the rate of thermal and fuel NOX emissions of twostage combustor with diffusion burner. A CFD-methods are well established for investigation of IGCC combustors behavior, but before the commencement of work it is expedient to verify the NOX formation and decomposition mechanisms.
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