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Theoretical study of using simulated moving bed chromatography to separate intermediately eluting target compounds
Jadwiga Nowak1, Dorota Antos, Andreas Seidel-Morgenstern
1Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany.
Journal of Chromatography. A
|July 31, 2012
Summary
This study compares advanced Simulated Moving Bed (SMB) chromatography configurations for separating ternary mixtures. It evaluates novel SMB designs for isolating target components, offering insights into industrial applications.
Area of Science:
- Chemical Engineering
- Chromatography
- Separation Science
Background:
- Conventional Simulated Moving Bed (SMB) chromatography is limited to binary separations and cannot perform center-cut separations.
- Separating ternary mixtures, especially isolating components with intermediate adsorption strength, presents significant challenges in chromatography.
Purpose of the Study:
- To theoretically compare advanced Simulated Moving Bed (SMB) configurations for ternary mixture separation.
- To evaluate novel SMB designs, including series-connected cascades and integrated 8-zone units, for industrial applicability.
- To assess the performance of the commercialized pseudo SMB (JO process) for complex separations.
Main Methods:
- Theoretical comparison of advanced SMB configurations: series-connected cascades and integrated 8-zone SMB with internal recycle.
- Evaluation of the commercialized pseudo SMB (JO process).
- Performance analysis based on linear adsorption isotherms for ternary mixtures with varying separation difficulties.
Main Results:
- Comparison of different SMB configurations for ternary separations, considering factors like separation difficulty, impurity concentrations, and purity requirements.
- Identification of the most effective advanced SMB systems for isolating target components with intermediate adsorption strength.
- Analysis of the influence of separation factors and feed composition on the performance of modified SMB systems.
Conclusions:
- Advanced SMB configurations offer improved capabilities for ternary mixture separation compared to conventional systems.
- The study provides a theoretical framework for selecting optimal SMB designs for specific industrial separation challenges.
- Novel SMB configurations show potential for enhanced industrial application in complex mixture separations.
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