Springerville Unit 4 AQCS

For the SRP Springerville Unit 4 AQCS Erection, the Kiewit team designed and built its own heavy haul trailer to transport equipment to the remote project site.

The Kiewit team was awarded the contract to construct and install the spray dryer absorber to the 400-megawatt coal-fired power plant. The Alstom air quality control system includes a new lime silo, an activated carbon injection system and Fläkt Woods ID fans. Flue gas cleanup systems use low nitrogen oxide burners and selective catalytic reduction for nitrogen oxide control, a dry flue gas desulfurization system for sulfur dioxide control and a pulse jet baghouse for particulate control with continuous 24-hour emissions monitoring.

Fly ash and bottom ash (byproducts from coal combustion) will be stored on-site in a sealed landfill. Air emission controls on Unit 4 will meet the EPA’s Best Available Control Technology requirements. As part of the plant expansion, the client also upgraded emission controls on Units 1 and 2. The result will be the combined emissions from all four units will be less than the original two units.