concentration of NO decreases as the distance from the wall
decreases. The fuel material with high volatile content appears
to form a significant amount of NO and N2O above the bed
surface, while NO emission decreases with volatile content at
the outlet of the combustor. Most NO is formed above the bed
surface, achieves a maximum value at the position below the
second air injection, and is reduced considerably within the
freeboard. Moreover, the most remarkable feature is that N2O
emission from the combustion can be neglected no matter
whatthe feeding material is.
EF7005595