【摘要】 本文研究了低浓铀-硝酸-水/TBP-煤油体系在2in喷嘴板空气脉冲萃取柱中的传质特性。用从萃取柱中分别取单相样的方法测定了不同脉冲强度下稳态浓度剖面,从扩散模型出发,用简单的近似计算方法处理实验数据,初步得出脉冲强度与扣除纵向混合影响的真实传质单元高度的关联式。更多还原

【Abstract】 A pulsed column is a kind of important extraction equipment. At present, deep studies for mass transfer in extraction columns require to consider the effect of longitudinal mixing. Some authors have engaged in such studies and a number of calculation methods for the pulsed extraction column have been established.This paper represents the character of mass transfer for low concentration uranium-nitric acid-water/TBP-kerosene system in an air-pulsed nozzle plate extraction column of two inch diameter. Stable concentration profiles under different pulsed conditions were determined by separately sampling of each phase from the extraction column. Data obtained were treated by simple approximation method using a diffusion model. The relation between pulse intensity and true height of the mass transfer unit in which the effect of longitudinal mixing has been deducted is obtained.更多还原