The NO{sub x}-load relationship: Myth or reality?
Conference
·
OSTI ID:617876
- Cadmus Group, Inc., Durham, NC (United States); and others
The US Environmental Protection Agency (EPA) is required under Title IV of the 1990 Clean Air Act Amendments (CAAA) to establish a program for controlling emissions of nitrogen oxides (NO{sub x}) from utility boilers. In Phase I of this program, EPA promulgated emission limits for the class of boilers known as Group 1 boilers: 0.50 lb/mmBtu for dry-bottom wall-fired boilers and 0.45 lb/mmBtu for tangentially fired boilers. The emission limits are determined on an annual average basis. Not later than January 1, 1997, EPA may establish more stringent emission limitations for Phase II, Group 1 boilers, if more effective low-NO{sub x} burner (LNB) technology is available. In a recently released report entitled Assessment of Performance Capabilities of LNBs Based On Reported Hourly CEM Data Through The Second Quarter of 1996, The Cadmus Group, Inc., evaluated continuous emission monitoring (CEM) data from Group 1 boilers retrofitted with LNBs. The objective of the evaluation was to estimate controlled annual average NO{sub x} emission rates that would be achievable by Phase II boilers based on hourly CEM NO{sub x} emissions currently being achieved by boilers having LNB retrofits. The percent emissions reduction achievable by boilers with LNB retrofits was evaluated for both wall-fired and tangentially fired boilers. Based on this information, statistical models were developed that projected the percentage of Phase II, Group 1 boilers that could meet more stringent emission limits as a result of retrofitting LNB controls.
- OSTI ID:
- 617876
- Report Number(s):
- CONF-970145--
- Country of Publication:
- United States
- Language:
- English
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