Prediction for Multi-Steady-State Solutions in the Thermal-Coupled Distillation
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Multiple steady-state solution (MSS) phenomena not only have a special effect on the design and optimization of distillation separation process, but also can provide some instructive information during the actual production. Thus, it is necessary to find out an easy and effective method to predict whether there exist multiple steady-state solutions or not. Based on previous researches and the Kremser group method, this research proposes a simple method, using a mathematical equation, to predict MSS occurring in the thermally coupled distillation separation column. Besides, Aspen plus simulator is employed to carry out rigorous simulation verification. By validation analysis, this method is relatively simple and effective for predicting the MSS occurring in the thermal-coupled distillation.
KeywordsMultiple steady states Rigorous simulation Mathematical equation Thermal-coupled distillation
This work is supported by the National Natural Science Foundation of China (No. 21376240).
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Conflict of Interest
The authors declare that they have no conflict of interest.
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