Liquid-phase volumetric and mass-transfer coefficient, and boundary of hydrodynamic flow region in packed column with cocurrent downward flow.
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概要
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Liquid-phase volumetric coefficients and Peclet numbers in liquid mixing were measured in packed columns with cocurrent downward flow. The empirical equations of liquid-phase volumetric coefficient are distinctly different in spray, pulse and dispersed bubble flow regions. The boundaries for the respective flow regions, obtained by combining two of these equations of volumetric coefficient, are in good agreement with the boundaries which have previously been given from the equations of interfacial area in the same fashion. The foam flow region, which gives the maximum value of liquid-phase mass-transfer coefficient, was found at higher gas Reynolds number in comparison with pulse and dispersed bubble flow regions. Taking the ratio of packing to column diameter dp/T and surface shape factor of packing Ø into consideration, the empirical equation of mass-transfer coefficient is presented in respective flow regions asSh=k*ldp/DA=5×102φ0.3Re1/3lRe1/5gSc1/2(dp/T)2.2This equation is applicable to illustrating the literature data in pulse and dispersed bubble flow regions.
- 公益社団法人 化学工学会の論文
著者
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Fukushima Susumu
Department Of Chemical Engineering Faculty Of Engineering Kansai University
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KUSAKA KATSUHIKO
Department of Chemical Engineering, Kansai University
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