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从理论和实验两方面对双柱循环色谱分离过程进行了研究 ,建立了相应的非平衡模型 .以蔗糖和还原糖的双柱循环色谱分离过程进行了实验分析 ,并采用计算机对该分离过程进行了模拟 .实验结果表明 ,非平衡数学模型计算出的理论流出曲线与实验流出曲线比较吻合 .计算机模拟分析结果表明 ,双柱循环色谱分离产率随着循环次数的增加而增大 ,采用双柱循环色谱分离获得的分离产率比传统的色谱分离可提高50 %以上 .当体系中表观选择性系数较小、轴向扩散较严重以及液固两相间的传质阻力较大时 ,使用双柱循环色谱分离可比使用传统单柱色谱分离获得更高的分离产率 .
The separation process of double column recirculation chromatography was studied both theoretically and experimentally, and the corresponding non-equilibrium model was established.The experimental analysis was carried out by two-column recirculation chromatography with sucrose and reducing sugar, and the separation process was carried out by computer The experimental results show that the theoretical outflow curve calculated by the unbalanced mathematical model is in good agreement with the experimental outflow curve.Computer simulation results show that the separation yield of double column recirculation chromatography increases with the increase of the number of cycles, The separation yield obtained by cyclic chromatography can be increased by more than 50% compared with the traditional chromatographic separation.When the apparent selectivity coefficient is small, the axial diffusion is serious and the mass transfer resistance between liquid and solid is large, Column recirculation chromatography provides higher separation yields than traditional single column chromatography.