Prevention of PCDD/PCDF formation by coal co-firing
- Acurex Environmental Corp., Durham, NC (United States)
- Environmental Protection Agency, Research Triangle Park, NC (United States)
- Univ. Arkansas, Fayetteville, AR (United States)
Formation of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) has been observed in waste combustors. However, PCDD and PCDF yields from coal combustion are relatively insignificant. Previous bench- and pilot-scale research has shown that the presence of sulfur dioxide (SO{sub 2}) can inhibit PCDD and PCDF formation, and suggested co-firing high-sulfur coal with refuse-derived fuel (RDF) to reduce the emissions. This work describes research in a large scale combustor which shows that coal/RDF co-firing can significantly lower PCDD and PCDF formation. PCDD and PCDF formation mechanism have been reviewed in detail by Addink and Olie. Measured yields can be affected by the combustion quality, levels of chlorine and catalyst species, residual carbon on the fly ash, and process parameters such as temperature and residence time. Two candidate mechanisms have been established for the inhibition of PCDD and PCDF formation by sulfur species.
- Research Organization:
- Solid Waste Association of North America, Silver Spring, MD (United States); Air and Waste Management Association, Pittsburgh, PA (United States); Integrated Waste Services Association, Washington, DC (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States); American Society of Mechanical Engineers, Yonkers, NY (United States). Solid Waste Processing Div.; Environmental Protection Agency, Research Triangle Park, NC (United States). Air Pollution Technology Branch
- OSTI ID:
- 548965
- Report Number(s):
- CONF-970440-; ON: DE97007054; TRN: 97:005590-0053
- Resource Relation:
- Conference: 5. annual North American waste-to-energy conference and exhibition, Research Triangle Park, NC (United States), 22-25 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of fifth annual North American waste-to-energy conference; PB: 1102 p.
- Country of Publication:
- United States
- Language:
- English
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