화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.36, No.11, 4928-4933, 1997
Measurement of Drop Rise Velocities Within a Kuhni Extraction Column
A new method is presented for the determination of droplet rise velocities within liquid-liquid extraction columns. This method utilizes the difference between the static drop size distribution as measured by a photographic technique and the dynamic drop size distribution as measured by a capillary probe technique. The ratio of the two volume densities multiplied by the average flow velocity is then a direct measure of the individual drop velocity. Droplet velocities measured using this technique are consistent with single drop velocities measured by other workers at low holdups. However, at higher holdups the droplet velocities converge toward a single value rather than retaining a range of drop size dependent values.