Abstract
In this study, the Fuel-NOx formation characteristics under the high CO_2 diluted conditions have been experimentally investigated using a tubular flame burner. The NH radical concentration which dominates the fuel-N to N_2 conversion reaction in a oxy-fuel flame front was measured by LIF. The results showed that the NH concentration can be measured quantitatively in saturation regime when the incident laser intensity exceeded 6mJ for oxy-fuel combustion. The NH radical profile measured by LIF was found to be slightly different from the numerical results obtained by 1-D flame code.
