The Pitchess Detention Center’s cogeneration plant in Castaic, Calif., installed two Nationwide Boiler ammonia-free CataStak SCR systems that utilize CCA Combustion Systems’ Trim-NOX urea injection systems.

The equipment was installed on two dual-fuel-fired Keeler auxiliary boilers, mandated to meet boiler NOX of 5 ppm, as required by the South Coast Air Quality Management District (SCAQMD). Both units were designed and engineered to reduce NOx emissions from 30 ppm NOX to 5 ppm NOX. Final NOX emission test results indicated reductions to less than 3 ppm NOX and ammonia slip under 2 ppm, successfully complying with the SCAQMD Rule 1146.

California Boiler Inc. was selected to install the CataStak SCR and the urea injection systems, including removal of the top portion of each boiler’s stack to facilitate the insertion SCR reactor housing, ductwork and support frames.