Effect of Baffle Plate on Minimum Impeller Speed for Liquid–Liquid Dispersion in Mechanically Agitated Vessels

Abstract

The correlation equation of Aida and Shono (2018) is expanded to propose a novel correlation equation related to the minimum impeller speed for a liquid–liquid agitated vessels. The correction coefficient of baffle k_b was added to the original equation in order to expand the applicability. This k_b is a function of B/D, 2c_b/(D–d), h/H, k_s, and n_b (c_b: clearance between baffle and vessel wall, B: baffle width, D: vessel diameter, d: impeller diameter, H: liquid depth, h: height of baffle under the liquid surface, k_s: correction coefficient of baffle shape, n_b: number of baffles).

Using this correlation equation, the previous literature values could be accurately sorted. In addition, the estimation of the minimum impeller speed with incomplete baffle conditions, which had been conventionally difficult, has become possible.