Liquid‐liquid heterogeneous mixing efficiency in a rotating packed bed reactor.

Zhang, Yi‐Dong; Zhang, Liang‐Liang; Wang, Ze‐Xin; Sun, Bao‐Chang; Chu, Guang‐Wen; Chen, Jian‐Feng

Mixing of two immiscible liquids consists of two sections that are liquid‐liquid dispersion and mass transfer intraphase or interphase. It plays a crucial role in the liquid‐liquid heterogeneous reactions. Here, the liquid‐liquid heterogeneous mixing efficiency in RPB reactor is experimentally assessed by a consecutive‐competitive chemical probe system. The diameters of dispersed phase droplets in RPB were measured and a correlation to predict the mean diameters were obtained. Based on the dispersed phase size and mass transfer characteristic, a model for predicting the segregation index of liquid‐liquid heterogeneous mixing in RPB was established with a deviation <20%. Based on this model, the characteristic time of liquid‐liquid heterogeneous mixing in RPB is determined to be in the range of 0.01–1 s. RPB exhibits a great process intensification potential for heterogeneous mixing process.

PACKED bed reactors; MASS transfer; CHEMICAL systems; PEBBLE bed reactors

AIChE Journal, 2023, Vol 69, Issue 6, p1

0001-1541

Academic Journal

10.1002/aic.18000