Rigorous MINLP model for ethanol dehydration system

Ethanol dehydration systems are modeled and optimized using MINLP. The systems consist of a distillation column for approaching the ethanol/water azeotrope and a pervaporation system for producing pure ethanol. Rigorous modeling equations are employed for modeling both the column and the subsystem o...

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Bibliographic Details
Published in:Computers & chemical engineering 2000-07, Vol.24 (2), p.1331-1336
Main Authors: Lelkes, Z., Szitkai, Z., Rev, E., Fonyo, Z.
Format: Article
Language:English
Subjects:
Distillation column
Ethanol dehydration
MINLP
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Summary:Ethanol dehydration systems are modeled and optimized using MINLP. The systems consist of a distillation column for approaching the ethanol/water azeotrope and a pervaporation system for producing pure ethanol. Rigorous modeling equations are employed for modeling both the column and the subsystem of membrane modules. Quadratic and exponential regression, as well as metric and linear interpolation are studied for approximating the integral membrane model. A method for radically decreasing the multiplicity of equivalent structures covered by the superstructure is suggested and applied. A successive refinement method with non-increasing number of binary variables is developed and successfully applied.
ISSN:0098-1354
1873-4375
DOI:10.1016/S0098-1354(00)00407-5