
510 Oxygen-Enhanced Combustion
the furnace bottom are shown in Figure 20.25. It can be
seen that sensitivity of air leakage on NO
x
emissions
is the lowest for ameless oxyfuel burner compared to
all the burners. To achieve an emission of 100mg/MJ
of fuel used the oxygen content in chimney for ame-
less oxyfuel, ameless airfuel, ameless airfuel with
oxygen enriched were approximately 14%, 7%, and 7%,
respectively.
20.5 Numerical Study of Flameless Oxyfuel
20.5.1 Mathematical Models
In the present study, an eddy-break-up (EBU) is used
to predict the combustion performance of the oxyfuel
ames combustion.
The EBU model assumes that the reaction ...