Gas‐Liquid Mass Transfer Rates and Impeller Power Consumptions for Industrial Vessel Design

Abstract Volumetric mass transfer coefficients (kLa) and power input (P) are often the key parameters in the design of gas‐liquid contactors. However, due to the limitations of most measurement methods, there is a lack of reliable data for predicting kLa for non‐coalescent batches under high energy dissipation rates. Accurate kLa and P correlations are proposed. The reliability of the correlations is ensured by using experimental data from a wide range of process conditions conducted in multiple‐impeller vessels of both laboratory scale and pilot scale, and including both non‐coalescent and coalescent batches. Applying the proposed correlations, the scale‐up and optimization of industrial vessels can be performed more accurately.