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超声场主要通过湍动效应、微扰效应、界面效应和聚能效应等 4个附加效应对固液相传质过程产生影响。该文借助树脂吸附的动力学过程进行超声场微扰效应和界面效应的研究。实验中以 D30 1G弱碱性树脂为吸附剂 ,醋酸为被吸附溶质 ,测定了不同超声功率条件下树脂吸附醋酸的动力学曲线及树脂粒径的变化 ,建立了适宜的数学模型 ,并计算求得了相应的传质系数和饱和吸附量。实验结果表明 ,树脂的吸附速率随超声功率的增大而增大 ,超声场对传质比表面积、传质系数及饱和吸附量皆有影响。
The ultrasonic field mainly affects the mass transfer process in solid-liquid phase with four additional effects, including turbulence effect, perturbation effect, interface effect and energy-gathering effect. In this paper, with the help of the kinetics of resin adsorption, the perturbation effect of ultrasound field and the interface effect are studied. In the experiment, D30 1G weak basic resin was used as adsorbent, and acetic acid was adsorbed solute. The kinetic curve of resin adsorption on resin and the change of resin particle diameter under different ultrasonic power were measured. The suitable mathematical model was established and calculated Got the corresponding mass transfer coefficient and saturated adsorption capacity. The experimental results show that the adsorption rate of resin increases with the increase of ultrasonic power, and the ultrasonic field affects mass transfer surface area, mass transfer coefficient and saturated adsorption capacity.