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错流碟片旋转超重力场反应器能够有效强化多相间化学反应,在超重力场中流体流动形式复杂,且液体的分布形态严重影响气液接触。通过条件简化采用因次分析方法建立了错流碟片旋转超重力场中液滴直径变化的数学模型,用三维激光多普勒衍射仪测试液滴的体积-表面积平均直径d32和变化规律。由模型分析和实验测试得出,随碟片转速增加液滴直径减小;随输入液体流量增大液滴直径增大;随入口气体流量增加,碟片空间和壳体空间液滴直径都变小。增加碟片间距液滴直径减小,有利于液体的雾化,减少液滴聚并。壳体空间液滴直径大于碟片空间的液滴直径,有不连续液丝和破碎液膜产生。模型计算和实验测试变化趋势基本一致。
The multi-phase chemical reaction can be effectively enhanced by the cross-disc rotating super gravity field reactor. The fluid flow forms in the super gravity field are complex, and the distribution of liquid seriously affects the gas-liquid contact. Through the simplification of conditions, the mathematical model of the droplet diameter change in the rotating super gravity field was established by using the factorial analysis method. The volume-surface area average diameter d32 and the variation of the droplets were measured by three-dimensional laser Doppler diffractometer. The model analysis and experimental results show that the droplet diameter decreases with the increase of the disk rotation speed. The droplet diameter increases with the flow rate of the input liquid. With the increase of the inlet gas flow rate, the droplet diameter of the disk space and the shell space both changes small. Increasing the disc spacing droplet diameter is reduced, is conducive to the liquid atomization, reduce the droplet aggregation. The droplet diameter of the shell space is larger than the droplet diameter of the disc space, and there are discontinuous liquid filaments and broken liquid film generated. The trend of model calculation and experiment test are basically the same.