OPTIMIZE YOUR SNCR PERFORMANCE WITH MIXING AIR

SNCR systems are being pushed to the limit to meet new, more stringent low NOx regulations. Extra SNCR demands can mean more expensive reagent use, ammonia slip, and even stack plumes.

Staged Air Combustion will significantly improve your SNCR molar efficiency performance instantly.

MIXING AIR OFF

SNCR Entry

With Mixing Air turned OFF, note how the reagent is only partially mixed with kiln gases. Partial mix means limited effectiveness. Larger quantities of reagent are required to produce better results. More reagent increases costs and creates additional problems.

CLICK IMAGE TO DOWNLOAD

Our 2012 Global Fuels Mixing Air Presentation.

MIXING AIR ON

SNCR Entry

With Mixing Air turned ON, two significant actions occur. ONE: Kiln gas stratification uphill from the Mixing Air is eliminated creating a better, more dynamic combustion environment. TWO: The mixing action completely disperses the SNCR agent into the kiln gases causing its effectivness to significantly increase.

This is the
DIRECT INJECT SNCR variation where the reagent enters through the Staged Air system.

STAGED AIR COMBUSTION RESULTS IN PREHEATER KILN

PREHEATER KILN
STAGED AIR COMBUSTION BENEFITS

ALTERNATIVE FUEL

5% - 8%Increase

IMPROVED SNCR PERFORMANCE

20% - 25% Molar Efficiency Improvement

REDUCE BASELINE NOx

850 mg/Nm3 à 680 mg/Nm3 minimum
-à 600 mg/Nm3 max

LIME / WHITE KILN
STAGED AIR COMBUSTION BENEFITS

REDUCE BASELINE NOx

950 --------> 600 mg/Nm3 (37%)
800 --------> 550 mg/Nm3 (30%)

SIGNIFICANT SNCR EFFICIENCIES