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MASS TRANSFER IN TWO-AND THREE-PHASE FLUIDIZED BEDS
Korean Journal of Chemical Engineering, January 1990, 7(1), 47-52(6), 10.1007/BF02697341
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Abstract
The effects of liquid(0.03-0.12m/s) and gas(0.04-0.20m/s) velocities, and particle size(0-0.8mm) on the volumetric mass transfer coefficients at the grid zone have been determined in a 0.152m-I.D. 1.8m high Plexiglas column.
The volumetric mass transfer coefficient in the grid zone increases with increasing gas velocity and particle size. However, the coefficient exhibits a maximum value at an optimum bed porosity condition.
The volumetric mass transfer coefficients in terms of the Sherwood number in three-phase fluidized beds have been correlated with the Schmidt number and particle Reynolds number which is related to the energy dissipation rate in the beds based on the local isotropic turbulence theory. Also, the coefficient has been correlated with the experimental variables.
The volumetric mass transfer coefficient in the grid zone increases with increasing gas velocity and particle size. However, the coefficient exhibits a maximum value at an optimum bed porosity condition.
The volumetric mass transfer coefficients in terms of the Sherwood number in three-phase fluidized beds have been correlated with the Schmidt number and particle Reynolds number which is related to the energy dissipation rate in the beds based on the local isotropic turbulence theory. Also, the coefficient has been correlated with the experimental variables.
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Chang SK, Kang Y, Kim SD, J. Chem. Eng. Jpn., 19, 524 (1986)
Massimilla L, Majuri N, Squillance E, Br. Chem. Eng., 6, 232 (1959)
Ostergaard K, Suchzebraski W, Chem. Reaction Eng. Progr., 4th European Symp. Sept. (1969)
Ostergaard K, Fosbol P, Chem. Eng. J., 3, 105 (1972)
Alvarez-Cuenca M, Baker CGJ, Nerenberg MA, Can. J. Chem. Eng., 61, 58 (1984)
Kim SD, Baker CGJ, Bergougnou MA, Can. J. Chem. Eng., 53, 134 (1975)
Alvarez-Cuenca M, Nerenberg MA, AIChE J., 27, 66 (1982)
Akita K, Yoshida F, Ind. Eng. Chem. Process Des. Dev., 12, 76 (1973)
Hikita H, Asai S, Tanigawa K, Segawa K, Kitao M, Chem. Eng. J., 22, 61 (1981)
Shah YT, Keilor BG, Godbole SP, Deckwer WD, AIChE J., 28, 353 (1982)
Deckwer WD, Nguyen-Tien K, Kelkar BG, Shah YT, AIChE J., 29, 915 (1983)
Jin GT, Kim SD, Choi IS, Proc. World Congress III of Chem. Eng. Tokyo, 2, 492 (1986)
Lamont JC, Scott DS, AIChE J., 16, 513 (1970)
Nguyen-Tien K, Patwari AN, Shumpe A, Deckwer WD, AIChE J., 31, 194 (1985)
Sanger P, Deckwer WD, Chem. Eng. J., 22, 179 (1981)
Suh IS, Jin GT, Kim SD, Multiphase Flow, 11, 255 (1985)
Magiliotou M, Chen YM, Fan LS, AIChE J., 34, 1043 (1988)
Calderbank PH, Mooyoung MB, Chem. Eng. Sci., 16, 39 (1961)
Kim JO, Kim SD, Part. Sci. Technol., 5, 309 (1987)
Baker CGJ, Armstrong ER, Bergougnou MA, Powder Technol., 21, 195 (1978)
Chiu TM, Nerenberg MA, Proc. of 6th Int. Ferment. Symp. Series, London, Canada, 477, Pergamon Press, New York (1980)
Kang Y, Suh IS, Kim SD, Chem. Eng. Commun., 34, 1 (1985)
Kim SD, Kang Y, Kwon HK, AIChE J., 16, 513 (1986)
Kim SD, Lee YJ, Kim JO, Exp. Thermal Fluid Sci., 1, 237 (1988)
