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Emerson's SmartProcess SCR Optimization Helps Constellation Energy's Brandon Shores Save $200,000 in NOx Credits

Published By Emerson Process Management

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Emerson's SmartProcess SCR Optimization Helps Constellation Energy's Brandon Shores Save $200,000 in NOx Credits

Published By Emerson Process Management

Published May 2009
2 Page(s)

Since Brandon Shores participates in the PJM Interconnection market for regulation and is required to closely follow fluctuating load demand, the flue gas temperature frequently dropped below 585 0F and occasionally dropped below 555 0F. The original SCR control schemes were not able to optimize the flue gas temperature and struggled to maintain the minimum SCR inlet temperature. Constellation needed an optimization solution that controlled the SCR inlet temperature more tightly in order to meet the SCR efficiency target of 90 percent NOx reduction. Doing so would help the plant achieve the operational flexibility required to participate in the PJM Interconnection market.