Abstract
A simulation using a thermodynamic equilibrium model was performed to predict the effect of ash compositions on the behavior of air pollutants during fluidized bed sludge incineration. To investigate emission characteristics, the incineration temperature, air-fuel ratio (λT) and contents of calcium and chlorine were chosen as major operating parameters. For the analyses of the desulfurization of SOx and the pollutant emissions by the limestone addition, the Ca/S molar ratio was changed from 0.5 up to 7.0. According to the simulation, NOx was not influenced markedly by the air-fuel ratio, though greatly influenced by operating temperature. The effect of desulfurization with limestone addition was greatly influenced by ash composition, and desulfurization occurred over the Ca/S molar ratio of 5.5. This was attributed to the fact that the reactivity of the P component in ash to the added CaO was higher than that of sulfur in fuel.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cooper, C. D. and Alley, F. C.,Air Pollution Control: A Design Approach, PWS Engineering, Boston (1986).
Desrches-Ducarne, E., Dolignier, J. C., Marty, E., Martin, G. and Delfosse, L., “Modeling of Gaseous Pollutants Emissions in Circulating Fluidized Bed Combustion of Municipal Refuse,”Fuel,77, 1399 (1998).
Fenimore, C. P., “Nitric Oxide in Premixed Hydrocarbon Flames,”13th. Symp. (Int.) Combust., 373 (1971).
Gibbs, B.M. and Hampartsoumian, E.,Limiting Air Pollution from Atmospheric Fluidized Bed Combustors in Fluidized Bed Boilers: Design and Application, Pergamon Press, Canada (1984).
Jang, J. G., Kim, W. H., Kim, M. R., Chun, H. S. and Lee, J. K., “Prediction of Gaseous Pollutants and Heavy Metals during Fluidized Bed Incineration of Dye Sludge,”Korean J. Chem. Eng.,18, 506 (2001).
Kawaguchi, M., “Co-incineration System of Municipal Refuse and Sewage Sludge by Fluidized Bed Incinerator,”J. Environ. Pollut. Contr. 21, 853 (1985).
Lee, J. K., Lee, K. H., Jang, J. G., Lim, J. H., Lim, J. S. and Chun, H. S., “Combustion Characteristics of Digested Sewage Sludge in a TwoStage Swirl-Flow Fluidized Bed Incinerator,”Korean Chem. Eng. Res.,30, 499 (1992).
Lee, K. H., “Combustion Characteristics of Sewage Sludge and Reduction of Pollutants in Fluidized Bed Incinerators,” Ph D. Dissertation, National Fisheries University of Pusan, Korea (1992).
Lin, S. Y., Shawabkeh, A., Matsuda, H., Horio, M. and Hasatani, M., “H2S Reaction with Limestone and Calcined Limestone,”J. Chem. Eng. Japan,28, 708 (1994).
Manzoori, A. R. and Agarwal, P. K., “The Role of Inorganic Matter in Coal in the Formation of Agglomerates in Circulating Fluidized Bed Combustors,”Fuel,72, 7 (1993).
Outokumpu Research Oy Information Service, “Outokumpu HSC Chemistry for Windows,” ISBN 952-9507-05-4, Pori, Filand (1999).
Seo, Y S., Kim, M. R., Eom, K. S. and Lee, J. K., “Desulfurization in a Two-Stage Swirl-Flow Fluidized Bed Sewage Sludge Incinerator with Limestone Addition,”J. of Korean Society of Environmental Engineers,21, 1621 (1999).
Yan, R., Gauthier, D., Flamant, G. and Badie, J. M., “Thermodynamic Study of the Behaviour of Minor Coal Elements and their Affinities to Sulphur during Coal Combustion,”Fuel,78, 1817 (1999).
Zeldovich, Y B., Sadovnikov, P. Y. and Frank-kamenetskill, D. A.,Oxidation of Nitrogen in Combustion, Academy of Science, U.S.S.R. (1947).
Zevenhoven-Onderwater, M., Blomquist, J. P., Skrifvars, B. J., Backman, R. and Hupa, M., “The Prediction of Behaviour of Ashes from Five Different Solid Fuels in Fluidized Bed Combustion,”Fuel,79, 1353 (2000).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, MR., Jang, JG. & Lee, JK. Effect of ash compositions on air pollutant emissions during fluidized bed sludge incineration. Korean J. Chem. Eng. 22, 61–66 (2005). https://doi.org/10.1007/BF02701463
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02701463