A Model for the Mass Transfer Coefficient in Rotating Packed Bed

Based on the locus of ink on the well-rotating disc, a model for the mean residence time of liquid in a rotating packed bed, t = ϕ′ ε (ctg(α2/2) − ctg (α1/2))ωu), is proposed. Model predictions agreed with the reported data with relative error within ±15%. A modified surface renewal model based on Danckwerts, is used. For evaluation of the mass transfer coefficient, prediction of surface renewal frequency 5 is assumed as S =ϕω(ϕis a model parameter), and effective contact time t is determined by the residence time model. Model predictions for kL agreed well with the experimental data with relative error within ±14%