화학공학소재연구정보센터
Chemical Engineering & Technology, Vol.29, No.9, 1113-1117, 2006
Correction of the penetration theory applied to the prediction of k(L)a in a bubble column with organic liquids
When Higbie's penetration theory is applied to calculate k(L)-values for ellipsoidal rather than spherical bubbles, some correction factor needs to be introduced. In a recent paper, such a correction factor (less than unity) was derived for the homogeneous flow regime, based on k(L)a-data measured in 1-butanol, toluene, ethanol, and tap water: f(c) =0.211 Eo(0.63). In the present work, the validity of this approach is further tested on kLa-data published for ethylbenzene, xylene, tetralin, anilin, nitrobenzene, 1,2-dichloroethane, 1,4-dioxane, 2-propanol, benzene, ligroin, and ethyl acetate. The full data set involving 79 experimental k(L)a-values at homogeneous flow in 14 organic liquids and tap water, is correlated with a 8.7% mean error in the following modified form: f(c) = 0.185 Eo(0.737).