Vapour-Liquid Equilibrium with a New Ebulliometer:Ester+Alcohol System at 0.5 MPa

Abstract

Abstract: A new dynamic ebulliometer is used to determine vapor-liquid equilibrium(VLE) data experimentally. In the equipment,both phases are recirculated. Its operation is a consequence of the Cotrell pump effect produced when the mixture is heated in a double-walled inverted vessel. The reliability of the apparatus is tested with the mixtures studied previously by various authors. VLE data for the binary systems of methyl acetate + methanol and the methyl acetate + ethanol at 0.5 MPa are determined. The experimental data are confirmed with the point-to-point test of van Ness,applying the Fortran program of Frendslund et al. In addition,the experimental results are compared with the UNIFAC(including different versions) and ASOG prediction models.

Key words: vapor-liquid equilibrium, vapor-liquid equilibrium apparatus, vapor pressure, alcohol

摘要： A new dynamic ebulliometer is used to determine vapor-liquid equilibrium(VLE) data experimentally. In the equipment,both phases are recirculated. Its operation is a consequence of the Cotrell pump effect produced when the mixture is heated in a double-walled inverted vessel. The reliability of the apparatus is tested with the mixtures studied previously by various authors. VLE data for the binary systems of methyl acetate + methanol and the methyl acetate + ethanol at 0.5 MPa are determined. The experimental data are confirmed with the point-to-point test of van Ness,applying the Fortran program of Frendslund et al. In addition,the experimental results are compared with the UNIFAC(including different versions) and ASOG prediction models.

关键词: vapor-liquid equilibrium, vapor-liquid equilibrium apparatus, vapor pressure, alcohol

P. Susial, A. Sosa-Rosario, R. Rios-Santana. Vapour-Liquid Equilibrium with a New Ebulliometer:Ester+Alcohol System at 0.5 MPa[J]. , 2010, 18(6): 1000-1007.

P. Susial, A. Sosa-Rosario, R. Rios-Santana. Vapour-Liquid Equilibrium with a New Ebulliometer:Ester+Alcohol System at 0.5 Mpa[J]. , 2010, 18(6): 1000-1007.

References

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