Prediction of gas hold-up for alcohol solutions in a draft-tube bubble column
2006
Albijanic, B.V., University of Novi Sad, Novi Sad (Serbia). Faculty of Technology | Djuric, M.S., University of Novi Sad, Novi Sad (Serbia). Faculty of Technology | Petrovic, D.Lj., University of Novi Sad, Novi Sad (Serbia). Faculty of Technology | Tekic, M.N., University of Novi Sad, Novi Sad (Serbia). Faculty of Technology
This paper deals with the prediction of the overall gas hold-up, in the diluted solutions of C1-C4 alcohols in draft - tube bubble column, by applying several newly proposed correlations and some of the well-known equations. Experiments were carried out in a column, consisting of two coaxial glass tubes, with a single sparger. Gas phase was air, while the liquid phases were aqueous solutions of alcohols, in concentrations of 0.5% w/w and 1% w/w. Overall gas hold-up was determined by applying volume expansion technique. The following order for overall gas hold-up values: water less than methanol less than ethanol less than n-propanol less than n-butanol. Concentration of the applyied alcohol appeared to b e less significant than the sort of alcohol itself. The best newly proposed correlation enables predicting of our experimental data with the average square deviation of empirical formula: square s = 0.58 E-04.
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