连续环状萃取色谱床的性能研究(Ⅱ)──考虑轴向扩散的传质数学模型  

Study of the characteristics in continuous annular extraction chromatography Ⅱ. The axial dispersion model of mass transfer

作　　者：秦炜[1,2] 张会平[1,2] 李阳兴 戴猷元[1,2] 

机构地区：[1]清华大学化学工程系 [2]厦门大学化学工程系

出　　处：《清华大学学报（自然科学版）》1997年第6期38-42,45,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金

摘　　要：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。The concentration profiles at the outlet for different operating conditions were measured in a continuous annular extraction chromatography. Aqueous solution of citric acid was used as feed, and deionized water as eluent. The total interphase mass transfer coefficients were calculated by fitting the experimental concentration profiles at outlet based on the diffusion model. The feasibility of this method was discussed. This method was compared with Carta method in this paper.

关 键 词：传质数学模型 分离 萃取色谱床 连续环状色谱床 

分 类 号：TQ028[化学工程]