Vapor-liquid equilibrium for binary systems ethanol (1) and water (2) and methyl acetate (1) and ethanol (2): Thermodynamic consistency and data prediction / Equilíbrio líquido-vapor para os sistemas binários etanol (1) e água (2) e metil acetato (1) e etanol (2): Consistência termodinâmica e predição de dados

Talita Kênya Oliveira Costa, Leonete Cristina de Araújo Ferreira, Cláudia Bezerra Silva, Beatriz de Azevedo, Talison Kennedy Oliveira Costa, Raquel Revoredo Pinheiro de Souza

Abstract


Ethanol or ethyl alcohol is an organic substance obtained from fermentation of sugars, hydration of ethylene or reduction of acetaldehyde. It consists of two carbon atoms, five hydrogen atoms and one hydroxyl group. It is the main biofuel used in the world, it is a renewable energy source and alternative to fossil fuels. In Brazil in 1975 was launched by the Federal Government the National Alcohol Program to combat the rampant use of oil and encourage the planting of sugar cane in the country. Given the importance of the use of ethanol, it is extremely important to know its thermodynamic properties for process optimization making them more energy efficient, as well as for the design of new industrial plants and equipment for the various processes. This work has as objective the study of Vapor-Liquid Equilibrium (VLE) of binary systems with ethanol, being the first ethanol (1) - water (2) and the second methyl acetate (1) + ethanol (2). To verify the thermodynamic consistency test of the data, the area test was applied, tested in the computational routine consist.exe and a data prediction was simulated in SPECS. The tests provide results of data consistency as well as the predator or VLE behavior of the binary systems studied for high pressure and temperature situations.


Keywords


Ethanol, Biofuel, Thermodynamic properties.

Full Text:

PDF

References


ALVAREZ, V. H.; MATTEDI, S.; IGLESIAS, M.; GONZALEZ-OLMOS, R.; RESA, J. M. Phase equilibria of binary mixtures containing methyl acetate, water, methanol or ethanol at 101.3 kPa. Phys. Chem. Liq., 49, 52-71, 2011.

BLANCO, A. M.; ORTEGA, J. Isobaric Vapor− Liquid Equilibria of Methanol + Methyl Ethanoate + Methyl Propanoate, and+ Methyl Butanoate at 141.3 kPa. Journal of Chemical & Engineering Data, v. 41, n. 3, p. 566-570, 1996.

CRISTINO, A. F.; ROSA, S.; MORGADO, P.; GALINDO, A.; FILIPE, E. J. M.; PALAVRA, A. M. F.; NIETO DE CASTRO, C. A. High-temperature vapour–liquid equilibrium for the water–alcohol systems and modeling with SAFT-VR: 1. Water–ethanol. Fluid Phase Equilib., 2013, 341, 48-53.

GMEHLING, J. et al. Azeotropic data for binary mixtures. CRC Handbook of Chemistry and Physics, v. 86, 2005.

GRISWOLD, J.; HANEY, J. D.; KLEIN, V. A. Ethanol-Water System. Vapor-Liquid Properties at High Pressures. Ind. Eng. Chem., v. 35, p. 701, 1943.

NAGATA, I.; OHTA, T.; TAKAHASHI, T. Excess thermodynamic functions of methyl acetate-methanol and methyl acetate-ethanol systems. Journal of Chemical Engineering of Japan, v. 5, n. 3, p. 227-231, 197

ORTEGA, J.; SUSIAL, P.. VLE at 114.66 and 127.99 kPa for the systems methyl acetate+ ethanol and methyl acetate+ propan-1-ol. Measurements and prediction. Journal of Chemical Engineering of Japan, v. 23, n. 5, p. 621-626, 1990.

OTHMER, D. F.; MOELLER, W. P.; ENGLUND, S. W.; CHRISTOPHER, R. G. Composition of vapors from boiling binary solutions recirculation-type still and equilibria under pressure for ethyl alcohol - water system. Ind. Eng. Chem., v. 43, p. 707-11, 1951.

SMITH, B. D. et al. Evaluation of Binary PTxy Vapor–Liquid Equilibrium Data for C 6 Hydrocarbons. Benzene+Cyclohexane. Journal of Physical and Chemical Reference Data, v. 11, n. 4, p. 1099–1126, out. 1982.

SOFTWARE CONSIST, IVC-SEP – Phase Equilibria and Separation Processes (MAN 8111), MANUAL FOR CONSIST: PROGRAM FOR CONSISTENCY TESTING OF BINARY VLE-DATA, 1981.

SOFTWARE SPECS (program for phase equilibrium calculations; it has been developed in the Center for Phase Equilibria and Separation Processes (IVC-SEP), Department of Chemical Engineering, Technical University of Denmark). Manual de utilização versão 5.63, 2010.

SUSIAL, P.; RIOS-SANTANA, R.; SOSA-ROSARIO, A. Vapor-liquid equilibrium measurements for the binary system methyl acetate+ ethanol at 0.3 and 0.7 MPa. Brazilian Journal of Chemical Engineering, v. 28, n. 2, p. 325-332, 2011.




DOI: https://doi.org/10.34117/bjdv6n6-233

Refbacks

  • There are currently no refbacks.