Mass transfer in laminar region between liquid and packing material surface in the packed bed

Abstract

Applying the hydraulic radius model to laminar flow in a packed bed and assuming that mass transfer in the packed bed is analogous to that between a pipe surface and a stream of liquid with steady laminar velocity profile, liquid-phase mass transfer from the packed solid sphere was analyzed and an approximate solution is proposed. Further liquidfilm mass transfer coefficients were measured for benzoic acid-water system. From these results, together with previous data, it was found that the proposed equation agrees with data in Re' <100, and Carberry's equation fits in Re'>100. © 1972, The Society of Chemical Engineers, Japan. All rights reserved.