采用柠檬酸水溶液为进料液、去离子水为冲洗液，在连续环状萃取色谱床内实验测定了不同操作条件下的流出曲线。利用考虑轴向扩散影响的传质过程数学模型，通过直接拟合实验流出曲线的方法求解相间总传质系数等模型参数，讨论了该模型的可行性。文中还将采用的模型方法与Ｃａｒｔａ的模型方法进行了比较 Using citric acid aqueous solution as the feed solution and deionized water as the rinse solution, the outflow curves under different operating conditions were experimentally measured in a continuous annular chromatography column. The mathematical model of mass transfer process, which considers the influence of axial diffusion, was used to solve the model parameters such as the interphase total mass transfer coefficient by directly fitting the experimental outflow curve. The feasibility of the model was discussed. The paper also compares the model method with Carta’s model method