MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION
The models of mass transfer and crystal growth rate in cycling-fluidized crystallization were simulated by means of the theory of Whiteman's mass transfer film.The experiment results show that within the some conditions,the crystal growth rate in cycling-fluidized crystallization is only related with the physical and chemical properties,the super-saturation level and the diameter of crystal seeds in crystal system, which regularity is that the crystal growth rate is in direct proportion to the diffusivity of solutes,the diameter of crystal seeds,the relative density between solution and the solute and the super-saturation level,and in inverse proportion to the viscosity of solution,the density of crystal,so with them the crystal growth rate in cycling-fluidized crystallization can be easily predicted among wide flow speed ranges by the models.