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Received February 9, 2010
Accepted July 5, 2010
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Influence of pulsing-air injection distance on pressure drop in a coke dust bagfilter
Department of Regional Environmental System Engineering, Pusan National University, 50 Cheonghak-ri, Samryangjin-eup, Miryang, Gyeongnam 627-706, Korea 1Department of Chemical Engineering, Hankyong National University, Anseong-si, Gyonggi-do 456-749 Korea 2Division of Chemical Engineering, School of Engineering, University of Queensland, Brisbane 4072 QLD, Australia
Korean Journal of Chemical Engineering, February 2011, 28(2), 613-619(7), 10.1007/s11814-010-0372-7
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Abstract
The effect of the pulsing-air injection distance between the nozzle and venturi on total pressure drop was investigated in a pilot-scale pulse-jet bagfilter for coke dust of a steel mill factory. Theoretical and empirical models were used to predict the pressure drop. The empirical model contains two parameters--dust cake resistance and exponent of areal mass density--to be estimated by experiment. The optimum injection distance for minimizing the total pressure_x000D_
drop was evaluated by 64 experimental data at a fixed filtration velocity and pulse pressure in the practical ranges of dust concentration and pulse interval time. The dust cake resistance shows a minimum value at the optimum injection distance. The empirical model is in good agreement with the experimental data, showing a correlation coefficient of 0.952.
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Ju J, Chiu MS, Tien C, Powder Technol., 118(1-2), 79 (2001)
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Jang YD, A study on the pressure drop variance of inlet concentration and face velocity in pulse-jet type bag filter, Miryang National University, Miryang (2007)
Cheng YH, Tsai CJ, Aerosol Sci. Technol., 29, 315 (1998)
Silva CRN, Negrini VS, Aguiar ML, Coury JR, Powder Technol., 101(2), 165 (1999)
Choi JH, Bak YC, Jang HJ, Kim JH, Kim JH, Korean J. Chem. Eng., 21(3), 726 (2004)
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