Three staged combustion for electric utility boiler NO{sub x} control in year 2003
Conference
·
OSTI ID:20013462
The US EPA Federal Implementation Plan (FIP) for 22 states and the District of Columbia will reduce nitrogen oxide emissions during the May through September ozone season below that currently required under the Clean Air Act Amendments(CAAA) of 1990. New technologies will be needed for coal-fired boilers to meet this new limit ({le}0.15 lb NO{sub x}/10{sup 6} Btu) to be imposed in the Year 2003. Selective Catalytic Reduction (SCR) is the only commercially available technology that can meet such a low NO{sub x} emission limit. A three-stage combustion technique being developed by ClearStack Combustion Corporation, that uses the CAIRE{trademark} (acronym for Controlled AIR Emissions) combustor technology, in combination with overfire air (OFA); can also meet this new NO{sub x} limit. A unique three-stage technique offers the electric utility industry a low cost alternative to SCR. Besides, reducing NO{sub x} emissions, the CAIRE unit will also reduce sulfur dioxide and particulate emissions when applied to wall and tangentially fired boilers. A low cost three-stage technique may also be applied to cyclone-fired units. Here, the cyclone barrels will be used as the first stage of combustion rather than the CAIRE combustor. In this cyclone application only NO{sub x} emissions will be reduced.
- Research Organization:
- ClearStack Combustion Corp. (US)
- OSTI ID:
- 20013462
- Country of Publication:
- United States
- Language:
- English
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