14
SCR Design Considerations
lEngine model, power
lFuel
lExhaust characteristics
–Flow rate
–Temperature
–O2, H2O concentration
–Untreated NOx emissions
lRequired NOx reduction
lAllowable pressure drop
l
lAchievable Performance
–>95% DeNOx
–<5 ppm NH3 slip
–<0.05 g/bhp-hr outlet NOx
–Low pressure drop
–Wide operating temperature range