Project Location: Somerset, Massachusetts

Project Completion: October 2006

Project Description:

ESI provided engineering and procurement for this carbon burn-out facility. This facility utilizes patented fluid bed technology designed by ESI and developed by Progress Materials to reduce the high carbon content of fly ash resulting from low NOx burner conversion of pulverized coal-fired utility boilers. The heat recovered from this process is captured in the utility heater cycle, which is an improvement to the utility boiler heat rate. The carbon burn-out plant processes the fly ash in an efficient manner to reduce the carbon content and provide a superior additive product for concrete. This facility was constructed at the Dominion-owned Brayton Point Electric Generating Station and was designed to process 300,000 tons per year of high LOI flyash, reducing it to 2% LOI. The system will accept all of the ash produced by Brayton Point as well as the majority of the ash produced at the Salem Harbor Generating Station. The marketable ash is pneumatically conveyed to a 40,000-ton loadout silo for storage and later reclaim to the loadout silo.