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Experimental study on emission characteristics and elemental composition of PM10 from a coal-fired boiler

Sui, J-C, Xu, M-H, Qiu, J-H, Guo, X., Gao, X-PORCID: 0000-0003-2491-8169, Wang, Q-B and Cao, Q. (2006) Experimental study on emission characteristics and elemental composition of PM10 from a coal-fired boiler. Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology, 12 (5). pp. 432-437.

Abstract

By using low pressure impactor, fly ash was sampled at the inlet and outlet of ESP in a 300 MW utility boiler. The composition, the mass and the elemental size distribution of fly ash were measured by X-ray fluorescence and 0.001 mg precision microbalance, respectively. Mass and elemental size distribution of Si, Al, Fe, Ca, Mg, S, Cu, Pb, Zn and Mn are bimodal. Fly ash diameter of the fine and coarse modes are about 0.1 μm and 2.36-3.95 μm, respectively. Efficiency of ESP for submicron ash was lower than that for normal varying between 62%-83%, and the efficiency was near 100% for ash larger than 10 μm. Mg, S, Cu, Zn and Pb are obviously enriched in fine ash, especially Cu, Zn and Pb, and about 50%-60% of these elements are found in PM2.5. The relative enrichment coefficient of Cu, Zn and Pb is about 30-40, its that of Si, Al and Ca decreases with the ash size decreasing, and that of Fe and Mn has no regular change with ash size.

Item Type: Journal Article
URI: http://researchrepository.murdoch.edu.au/id/eprint/53325
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