caa a22 4500 465743250 CHVBK 20180323111813.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02697350 doi (NATIONALLICENCE)springer-10.1007/BF02697350 Axial dispersion characteristics in three phase fluidized beds [Elektronische Daten] [Hyeuk Kwon, Sang Kim] Axial dispersion coefficients in three-phase fluidized beds have been measured in a 0.152 m-ID x 1.8 m high column by the two points measuring technique with the axially dispersed plug flow model. The effects of liquid velocity (0.05-0.13 m/s), gas velocity (0.02-0.16 m/s) and particle size (3-8 mm) on the axial dispersion coefficient at the different axial positions (0.06-0.46 m) in the bed have been determined. The axial dispersion coefficient increases with increasing gas velocity but it decreases with an increase in particle size and exhibits a maximum value with an increase in the axial position from the distributor. The axial dispersion coefficients in terms of the Peclet number have been correlated in terms of the ratio of fluid velocities, the ratio of the panicle size to column diameter, and the dimensionless axial position in the bed based on the isotropic turbulence theory. Korean Institute of Chemical Engineering, 1990 Kwon Hyeuk Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 130-650, Seoul, Korea aut Kim Sang Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 130-650, Seoul, Korea aut Korean Journal of Chemical Engineering Springer-Verlag 7/3(1990-07-01), 182-187 0256-1115 7:3<182 1990 7 11814 https://doi.org/10.1007/BF02697350 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02697350 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kwon Hyeuk Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 130-650, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Sang Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 130-650, Seoul, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer-Verlag 7/3(1990-07-01), 182-187 0256-1115 7:3<182 1990 7 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer