The mechanism model of gas-liquid mass transfer enhancement by fine catalyst particles

摘要

In order to present the enhancement of gas-liquid mass transfer by heterogeneous chemical reaction near interface,the mechanism model has been proposed to describe the mass transfer rate for a gas-liquid-solid system containing fine catalyst particles.The composite grid technique has been used to solve the model equations.With this model the effect of particle size,first-order reaction rate constant,distance of particle to gas-liquid interface and residence time of particle near gas-liquid interface on the mass transfer enhancement have been discussed.The particle-particle interaction and slurry apparent viscosity can be considered in the model.The experimental data have been used to verify the model,and the agreement has been found to be satisfied.