Simulation of effect of draft plate on particle growth process in spray fluidized beds
The wet granulation process in the spray fluidized bed is widely used in various industrial sectors,such as energy,pharmaceutical,food,and chemical industries.However,the granular growth process in the fluidized bed involves the interaction of complex gas-liquid-solids,and it is difficult to achieve precise control of the granular process.Therefore,based on the discrete element model,the influence of the draft plate structure in the spray fluidized bed on the flow and growth characteristics of particles in the bed was studied by adding the liquid bridge force model and the particle growth model.The influence of the particle fluidization state on the uniformity of particle growth was analyzed.The results indicate that increasing the lengths of the draft plates in the fluidized bed or decreasing the gaps and heights of the draft plates enhances the fluidization state of the particles,extends the particle growth area,lengthens the particle cycle times,inhibits the growth of a single particle coating,and improves the uniformity of particle growth.
万方数据
维普
