2006•Journal of Shandong University of TechnologyRequires access

Prediction of vapor-liquid equilibria for ethyl formate and ethanol system

Zhang Shi-xu, HU Dan-yun, Ying Fang

Abstract

The equilibria for ethyl formate and ethanol system at atmosphere were predicted by modified UNIFAC model.The calculation results showed that the mole fraction of ethyl formate at boiling point azeotrope is 0.935.Compared with the results from UNIFAC model,the modified UNIFAC model is more accurate for calculation.It was convinced that normal distillation was not an ideal method for the separation of ethyl formate and ethanol because of azeotrope.

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Key concepts: Azeotrope, UNIFAC, Chemistry, Boiling point, Extractive distillation, Ethyl formate, Ethanol, Thermodynamics