Mass transfer in cocurrent gas-liquid flow: Gas side mass transfer coefficients in upflow, interfacial areas and mass transfer coefficient in gas and liquid in downflow

✍ Scribed by R.V. Shilimkan; J.B. Stepanek

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 648 KB
• Volume: 33
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(78)85144-6

✦ Synopsis

comparison of the values of mterfaclal area m cocurrent downward flow of gas and hquld with those obtamed m upward flow revealed very httle difference Volumetric as well as true hqmd side mass transfer coefficients m downflow were found to be several times lower than m upflow Only m the smallest 10 mm tube a dependence of the mass transfer coefficient on the gas flow rate could be detected, no effect of the gas velocity was observed m the I5 and 20 mm tubes A correlation for the hquld side mass transfer coefficient was obtamed III terms of the Reynolds number of the film The volumetric gas side mass transfer coefficient m upflow was generally Independent on the hquld flow rate except at high gas veloclttes m the two smaller tubes Correlations were obtamed for the volumetric mass transfer coefficient m terms of the spectfic rate of energy dlsslpatlon, and of the true mass transfer coefficient m terms of dtmenslonless groups Much lower values were obtamed for the gas side mass transfer coeffictent m downflow Only the data for the IO mm tube could be correlated with some success by the formulas proposed for upflow