两种动折流圈折流式超重力旋转床气相压降的实验研究

Experimental study on gas pressure drop of two different rotating disc of the rotating zigzag high-gravity bed

折流式超重力旋转床是继旋转填料床之后出现的一种新型高效的气液传质设备.压降是超重力旋转床流体力学的重要特征之一.实验以空气—水为物系,对转子直径为288 mm,高度为55mm的折流式旋转床进行了压降实验.旋转床转子采用动圈开单排孔和动圈开多排孔两种结构,实验结果表明折流式旋转床的气相总压降随气量、转速、液量的增加而增大,随气量和转速增大的趋势比较明显,随液量增大的趋势比较缓慢.在同等条件下,单排孔压降比多排孔大.

Following the appearance of RPB （Rotating Packed Bed）, the Rotating Zigzag Bed （RZB） appears as a novel kind of highly efficient mass transfer equipment which can greatly intensify the gas-liquid mass transfer process in it. The pressure drop is one of the most important characteristics in hydrodynamics of high-gravity rotating bed. The experiment was carried out in a RZB with rotor diameter of 288 mm and rotor height of 55 mm with air-water system. The rotor of RZB had two type of structure of single row orifices and multi-row orifices on the rotating disc. The results showed that the gas pressure drop increased with the increase of gas flow rate, liquid flow rate and rotation speed. Gas pressure drop increased rapidly with the increase of gas flow rate and rotating speed, and increased smoothly with the increase of liquid flow rate. Under the same operation conditions, the pressure drop of RZB with single row orifices is larger than that of RZB with multi-row orifices.