Case Study: Emerson's SmartProcess™ SCR Optimization Helps Constellation Energy's Brandon Shores Save $200,000 In NOx Credits

At 1300 megawatts, Brandon Shores is the third-largest power plant in terms of owned capacity within Constellation Energy's generation profile. The Brandon Shores station operates with Selective Catalytic Reduction (SCR) systems to reduce NOx emissions during the annual ozone season from May through September. In order for the SCR to work at its target efficiency rate of 90% NOx reduction, the flue gas entering the SCR must be greater than 585 degrees Fahrenheit (°F). Constellation needed an optimization solution that controlled the SCR inlet temperature more tightly in order to meet the SCR efficiency target of 90% NOx reduction. Doing so would help the plant achieve the operational flexibility required to participate in the PJM Interconnection market.