CAJ | 학술논문

采用受力分析的方法建立了微分散液滴直径计算模型，以正丁醇/磷酸/水为实验体系，研究了微分散法萃取磷酸的传质特性，依据传质理论计算出了各实验条件下的传质系数及传质速率。研究结果表明：在微分散条件下，液滴直径随分散相流量的增大而减小；直接影响传质系数的因素主要是进口酸浓度、物性、相比、液滴直径、两相流量；采用准数关联出传质系数关联式为：Sh=9.01×10-8Sc1.612Re0.6876p1.027，计算值与实验值相对误差小于10%，为微分散萃取磷酸技术的深入研究提供了理论基础。
채용수력분석적방법건립료미분산액적직경계산모형，이정정순/린산/수위실험체계，연구료미분산법췌취린산적전질특성，의거전질이론계산출료각실험조건하적전질계수급전질속솔。연구결과표명：재미분산조건하，액적직경수분산상류량적증대이감소；직접영향전질계수적인소주요시진구산농도、물성、상비、액적직경、량상류량；채용준수관련출전질계수관련식위：Sh=9.01×10-8Sc1.612Re0.6876p1.027，계산치여실험치상대오차소우10%，위미분산췌취린산기술적심입연구제공료이론기출。
A stress analysis method was used to predict droplet diameter of an n-butanol/ phosphoric acid/ water micro-dispersion system, and the mass transfer characteristics of phosphoric acid extraction was studied. Mass transfer rates and coefficients were obtained based on mass transfer theories. The results show that the droplet diameter decreases with the increase of dispersion phase flow, and the main factors influencing transfer coefficient are inlet acid concentration, physical properties, phase ratio, droplet diameter and phase flow. The non-dimensional expression for the mass transfer coefficient is expressed asSh=9.01×10-8Sc1.612Re0.6876p1.027, and the deviations between calculated values and experimental data are less than 10%. This model can provide good theoretical support for further study of phosphoric acid extraction with micro-dispersion techniques.