Individual film coefficients of mass transfer in liquid‐liquid extraction

Abstract

Differential analysb of compression-permeability tests n1 and nr [Compare Equation (9) Presaturation of either phase was found to have no effect on mass transfer rates. There appears to be relatively little difference in the efaciency of spray and packed columns for systems of low interfscial tension, but for high interfacial-tension systems packed columns are considerably more efficient than spray columns.While no definitive correlations for the effect of physical properties are proposed, there are some indications that n is a function of the Viscosity ratio of the two liquid phases and that CZ is a function of the 1/4 power of the groups

Dispersed Phase Distributors in Packed Countercurrent, Liquid-Liquid Extraction Column

“…where ( / ) = arithmetic average rate of diethylamine transferred based on toluene and water-phase material balances, pound moles per hour, and Cw = pound moles of diethylamine per cubic foot water phase. Several investigators (6,11,19) have reported that the individual HTU of the dispersed phase was independent of flow rates while the individual HTU of the continuous phase varied with the ratio of flow rates. Thus Equation 1 becomes:…”