In order to observe the effect of particle shape of poly-dispersed dusts on filter performance, the pressure drop across the dust cakes of fly ashes from a conventional power plant (PC), fluidized bed combustion (FBC), and paint incinerator (FI) was measured over a metal filter element in the accurate conditions. A fluidized bed column was used to prepare the dust feed stream of uniform particle distribution. The fine particles of FI ash have a tendency to be agglomerated at low transport velocity. The aggregates were broken at high velocity of more than 21 cm/sec. FBC ash composed of jagged type particles and containing high concentration of unburned-carbon showed higher pressure drop than that of PC ash composed mostly of spherical particles. FI ash composed of aggregates of very fine carbon particles presented the highest pressure drop among the fly ashes tested. The shape factors of PC, FBC, and FI ash were estimated as 0.91, 0.76, and 0.65, respectively, by the Ergun equation. The results implied that the irregular particle tends to form a higher pressure drop and to be more compressible than spherical one.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. ReferencesAguar, M. L. and Coury, J. R., “Cake Formation in Fabric Filtration of Gases,”Ind. Eng. Chem. Res.,35, 3673 (1996).
Cheung, Y.H. and Tsai, C. J., “Factors Affecting Pressure Drop Through a Dust Cake During Filtration,”Aerosol Science and Technology,29, 315 (1998).
Choi, J.H., “Investigation into the Pulse Cleaning of the Ceramic Filter Candle,”High Temperature Gas Cleaning,2, 200 (1999).
Ergun, S., “Fluid Flow Through Packed Columns,”Chem. Eng. Prog.,48(2), 89 (1952).
Koch, D., Cheung, W., Seville, J. P.K. and Clift, R., “Effects of Dust Properties on Gas Cleaning Using Rigid Ceramic Filters,”Filtration & Separation,July/August, 337 (1992).
Mitchell, S. C., “Hot Gas Particulate Filtration,” IEA Coal Research, London, UK (1997).
Neiva, A. C. B., Goldstein,Jr. L. and Calvo, P., “Modeling Cake Compressibility on Gas Filters,”High Temperature Gas Cleaning,2, 83 (1999).
Park, O. K., Kim, S. D., Son, J. E., Rhee, Y.W. and Choi, W. S., “Demonstration of a KIER-Type CYBAGFILTER System at the Clinker Calcination Process,”Korean J. Chem. Eng.,17, 579 (2000).
Park, O.K., Park, H. S., Park, S. J., Kim, S.D., Choi, H.K. and Lim, J.H., “Development and Evaluation of Multilayer Air Filter Media,”Korean J. Chem. Eng.,18, 1020 (2001).
Perry, R. H. and Green, D.W., “Perry’s Chemical Engineerings’ H/B,” 6th ed., McGraw-Hill, 20 (1973).
Yoa, S. J., Cho, Y. S., Choi, Y. S. and Baek, J. H., “Characteristics of Electrostatic Cyclone/Bag Filter with Inlet Types (Lab and Pilot Scale),”Korean J. Chem. Eng.,18, 539 (2001).
Joo-Hong Choi
Present address: Dept. Chem. Eng./ERI, Gyeongsang National University, 660-701, Chinju, Korea
Dept. Chem. Eng./ERI, Gyeongsang National University, 660-701, Chinju, Korea
Soon-Jong Ha & Young-Ok Park
Korea Institute of Energy Research, 305-343, Daejeon, Korea
Young-Ok Park
This paper is dedicated to Professor Wha Young Lee on the occasion of his retirement from Seoul National University.
About this article Cite this articleChoi, JH., Ha, SJ. & Park, YO. The effect of particle shape on the pressure drop across the dust cake. Korean J. Chem. Eng. 19, 711–717 (2002). https://doi.org/10.1007/BF02699322
Received: 31 January 2002
Accepted: 16 March 2002
Issue Date: July 2002
DOI: https://doi.org/10.1007/BF02699322
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