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http://dx.doi.org/10.5572/KOSAE.2010.26.3.245

Investigation of Elemental Mercury Oxidation on Commercial SCR Catalysts in Flue Gas of Fossil Fired Power Plant  

Lee, Seung-Min (KEPCO Research Institute)
Lee, Jung-Bin (KEPCO Research Institute)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.26, no.3, 2010 , pp. 245-252 More about this Journal
Abstract
For the purpose of evaluating to remove elemental mercury using SCR (Selective Catalytic Reduction) catalysts, the result of the concentration variation of elemental mercury in lab experiment and field measurement was compared. The effect of the elemental mercury oxidation on commercial catalysts was studied in simulated gas. Three species of SCR catalyst, $V_2O_5-TiO_2$ type, were selected. The elemental mercury reduced 30% without HCl gas in SCR operating condition. But the width of reduction increased 60% at 20 ppm HCl gas. According to the result of field measurement, reduction rate of elemental mercury at SCR outlet showed 60%. The total mercury concentration decreased about 20%. The results were similar to the lab test. The results of chemical analysis of test sample showed increase of mercury concentration but surface change was not observed.
Keywords
SCR; Mercury; HCl; Oxidation rate; Commercial catalysts;
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1 Straube, S., T. Hahnb, and H. Koesera (2008) Adsorption and oxidation of mercury in tail-end SCR-DeNOx plants- Bench scale investigations and speciation experiments, Applied Catalysis B: Environmental, 79, 286-295.   DOI   ScienceOn
2 Yang, H. and W. Pan (2007) Transformation of mercury speciation through the SCR system in power plant, J. Environmental Sciences, 19, 181-184.   DOI   ScienceOn
3 Yudovich, Y.E. and M.P. Ketis (2006) Chlorine in coal, Int. J. Coal Geology, 67, 127-144.   DOI   ScienceOn
4 Zhung, Y., J. Laumb, R. Liggett, M. Holmes, and J. Pavlish (2007) Impact of acid gases on mercury oxidation across SCR catalyst, Fuel Processing Technology, 88, 929-934.   DOI   ScienceOn
5 Eswaran, S. and H.G. Stenger (2005) Understanding mercury conversion in selective catalytic reduction (SCR) catalysts, Energy & Fuels, 19, 2328-2334.   DOI   ScienceOn
6 Eswaran, S. and H.G. Stenger (2008) Effect of halogens on mercury conversion in SCR catalysts, Fuel Processing Technology, 89, 1153-1159.   DOI   ScienceOn
7 Galbreath, K.C. and C.J. Zygarlicke (2000) Mercury transformation in coal combustion flue gas, Fuel Processing Technology, 65-66, 289-310.   DOI   ScienceOn
8 Lee, C.W., R.K. Srivastava, S.B. Ghorishi, J. Karwowski, T.W. Hastings, and J.C. Hirschi (2006) Pilot scale study on the effect of selective catalytic reduction catalyst on mercury speciation in Illinois and powder river basin coal combustion flue gas, J. Air & Waste Manage. Assoc., 56, 643-649.   DOI   ScienceOn
9 Niksa, S. and N. Fujiwara (2005) A predictive mechanism for mercury oxidation on SCR catalysts under coalderived flue gas, J. Air & Waste Manage. Assoc.,55, 1866-1875.   DOI   ScienceOn