Abstract
Organic-phase drops were formed in water at a multi-nozzle distributor using five liquid-liquid systems. The drop diameter was measured photographically to obtain the effect of nozzle velocity and physical properties on the drop size. Based on present and published experimental results for 13 liquid-liquid systems from eight different data sources two correlations for the prediction of drop diameter at a multi-nozzle distributor are presented, one at low velocities for drop formation directly at a nozzle tip: φ d = 4 3 ( 6-2We E o ̈ ) 1/4 and the other for drop formation at higher velocities due to the break-up of the liquid jets issuing from the nozzles: φ d = 2.35 Eö −0.16 We −0.55 exp(O.08 We) These equations predict the drop diameter with an average deviation of 5.9%. Furthermore, when these correlations are applied to data from single nozzles, the average deviation is also 5.9%, which is less than the values obtained using published drop size correlations.
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