N2O from Circulating Fluidized Bed Boilers - Present Status

Several conclusions can be made about the N2O emissions from CFB boilers, for instance: - Much more of the fuel nitrogen leaves with the flue gases in the form of N20 than NO.- The N2O emission decreases with increasing bed temperature, unlike the NO emission.- The N2O emission decreases with decreasing excess air, similar to the NO emission.- High volatile fuels result in lower N20 emission than low volatile fuels.- The N20 concentration increases in the vertical direction of the combustion chamber