SCR Catalyst Management - Wpca.info

Required Reactor Potential• Minimum catalytic potential required to achieve desired DeNO x andNH 3 slip rates for given operating periodRP =k tAVk t = activity at time t (EOL)AV = area velocityAV =V fgVol cat *A spec• Catalyst deactivates with time, k 0 k t (time at end of life)• Fresh catalyst activity, k 0 ,depends onCatalyst formulation V 2 O 5TemperatureFlue gas composition – H 2 O, O 2 , SO 2• Iterative process to determine required AV and k13