MASS TRANSFER IN TWO- AND THREE-PHASE FLUIDIZED BEDS

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

S. D. KIM¹  S. K. CHANG¹  Y. KANG¹ 

[1] Department of Chemical Engineering, Korea Advanced Institute oj Science and Technology

关键词: Mass Transfer;    Fluidized Beds;    Three Phase;    Bubble Column;    Interfacial Area;   

DOI  :  10.1252/jcej.19.524

来源: Maruzen Company Ltd

【 摘 要 】

References(22)Cited-By(27)Mass transfer characteristics of two- (gas-liquid) and three-phase (gas-liquid-solid) fluidized beds in a 6.64cmi.d. and 1.8m-high Plexiglas column have been determined in terms of gas-liquid mass transfer coefficient and interfacial area. In three-phase fluidized beds, carbonate/bicarbonate buffer solution, carbon dioxide and glass beads of three sizes were used as the liquid, gas and solid phases, respectively. The effects of liquid velocity (5.4-13.0 cm/s), gas velocity (1.0-6.5 cm/s), liquid-phase ionic strength (0.5-3.0 mol/l) and particle size (1.7-6.0 mm) on the mass transfer coefficient and the interfacial area were determined. The volumetric mass transfer coefficient, kLa, and the gas/liquid interfacial area, ", increased with increasing gas velocity, particle size and liquid-phase ionic strength in three-phase fluidized beds. The volumetric mass transfer coefficient and the gas-liquid interfacial area were correlated in terms of gas and liquid velocities and particle size. The liquid-side mass transfer coefficient, KL, was correlated by the Schmidt and modified Reynolds numbers in the two- and three-phase fluidized beds of 6-mm particles based on the isotropic turbulence theory.

【 授权许可】

Unknown