A research investigation of the overall mass transfer coefficients, holdup and mean drops of dispersed phase as well as slip and characteristic velocities were carried out in the pulsed scale-up column with disc and doughnut structure for extraction of tellurium and selenium from a hydrochloric acid medium with TBP extractant. The impact of operating conditions containing the pulse intensity, inlet aqueous and solvent phase velocities have been studied on the mass transfer rates, and the special column characteristic. By considering the reactive extraction situations, modified models were derived for predicting of holdup, d₃₂, and slip velocity in this extractor. The axial diffusion model for extracting the selenium and tellurium using the TBP system was utilized to determine the mass transfer evaluation. Mass transfer data indicated that the column performance enhanced by increasing the pulse intensity and inlet phase velocities. Because of the reactive extraction system, available correlations failed to correctly estimate the mass transfer data. Thus, a novel model based on dispersed phase holdup, Eö, and Re numbers was developed to estimate the enhancement factor. The values calculated by the derived correlation were compared with the experimental results, and a good agreement was obtained between results.

在具有圆盘和圆环结构的脉冲放大柱中，从盐酸介质中提取碲和硒，研究了整体传质系数，弥散相的持留率和平均下降以及滑移和特征速度的研究。用TBP萃取剂。研究了包括脉冲强度，入口水相和溶剂相速度在内的操作条件对传质速率和特殊色谱柱特性的影响。通过考虑反应性抽提情况，推导了修正模型，以预测持留率d ₃₂，以及该提取器中的滑移速度。利用TBP系统提取硒和碲的轴向扩散模型来确定传质评价。传质数据表明，色谱柱性能通过提高脉冲强度和进口相速度而提高。由于采用了反应萃取系统，可用的相关性无法正确估计传质数据。因此，开发了一种基于分散相保持率，Eö和Re数的新颖模型来估计增强因子。通过推导的相关性计算出的值与实验结果进行了比较，结果之间取得了很好的一致性。