Modeling of ethanol dehydration by diffusion distillation in consideration of the sensible heat transfer

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The diffusion distillation is the evaporation and diffusion process below the boiling temperature of the mixture in a gap filled with the inert gas. It can separate the azeotropic mixture of ethanol and water. The mass transfer in a differential single column can be described by the Maxwell-Stefan equations. Differential mass balances which can extend a column model from a differential single column to an integral column and heat balances were suggested. The new model considers the sensible heat transfers and develops algorithm which enables to calculate interfacial temperature more precisely at condensing liquid film and include one more iterative loop. The results are compared with the experimental data and other models.
Publisher
KOREAN INST CHEM ENGINEERS
Issue Date
1996-05
Language
English
Article Type
Article
Keywords

MAXWELL-STEFAN EQUATIONS; MULTICOMPONENT FILM MODEL

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.13, no.3, pp.275 - 281

ISSN
0256-1115
URI
http://hdl.handle.net/10203/75735
Appears in Collection
CBE-Journal Papers(저널논문)
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