Numerical simulation of continuous crystallization process based on CFD-PBE coupling model
The continuous crystallization process was numerically simulated by coupling CFD-PBM(computational fluid dynamics and population balance model).QMOM was employed to solve the coupled PBE.When nucleation,growth,coalescence and breakage were considered,the number of grids for numerical simulation were determined by the grid independence verification.Then the effect of baffle installment,residence time,rotating speed and impeller type on the CSD evolution was investigated.The results show that the turbulence intensity is improved by setting up the baffle in the crystallizer.Smaller particle size is obtained with high rotational speed and low residence time.Finally,comparing the CSD from three impellers,the axial flow propeller shows to be lower power consumption and suitable for crystallization with large particle size,while radial disc turbine propeller can be selected to obtain microparticle crystal.
continuous crystallizationnumerical simulationpopulation balance equationquadrature method of momentcrystal size distribution
万方数据
维普
