A Study on the Separation of Ethanol from Acetal According to the Change of Distillation Column Operating Pressure 


Vol. 30,  No. 4, pp. 289-297, Dec.  2024
10.7464/ksct.2024.30.4.289


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  Abstract

In this study, a computational simulation was performed at varying operating pressures in order to achieve an acetal content of less than 10 ppm in a distillation column containing a mixture of ethanol and 2,000 ppm acetal. Ethanol and acetal form an azeotropic mixture at regions where there is a higher concentration of ethanol. The normal boiling point of ethanol is 78.29 oC, while that of acetal is 104.20 oC. However, in regions where the composition of ethanol is very high, an inversion of relative volatility occurs due to the azeotrope between the two components. Therefore, the conventional distillation process results in an azeotropic composition of the two components at the top of the column and almost pure ethanol at the bottom. The azeotropic composition between the two components makes separation through distillation easier as the pressure decreases because lower pressures cause the ethanol composition to shift towards the lower side of the mixture. Consequently, the separation efficiency was examined according to distillation column operating pressures.

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  Cite this article

[IEEE Style]

Y. J and J. Cho, "A Study on the Separation of Ethanol from Acetal According to the Change of Distillation Column Operating Pressure," Clean Technology, vol. 30, no. 4, pp. 289-297, 2024. DOI: 10.7464/ksct.2024.30.4.289.

[ACM Style]

Youngjoo J and Jungho Cho. 2024. A Study on the Separation of Ethanol from Acetal According to the Change of Distillation Column Operating Pressure. Clean Technology, 30, 4, (2024), 289-297. DOI: 10.7464/ksct.2024.30.4.289.

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