Termodinamica do equilibrio aplicada a destilação etanol-agua
AUTOR(ES)
Roberto de Campos Giordano
DATA DE PUBLICAÇÃO
1985
RESUMO
A method for testing the thermodynamic consistency of experimental liquid-vapor equilibrium data for binary systems through the integration of the coexistence equation is proposed. This method exempts from the use of correlations for both the activity coefficient and saturation pressures and shows a good sensibility. The coexistence equation method is then used for checking the consistency of ethanol-water data, found in the literature. In this way, groups of isothermal data are selected and equations for the activity coefficient, with temperature dependent parameters, are adjusted to them, improving the fit. The UNIQUAC and van Laar equations show the best results. The obtained correlations are used for simulating the destillation of ethyl alcohol through the model of Naphtali Sandholm. The influence of some simplifications in the thermodynamic calculations over the simulation results is verified
ASSUNTO(S)
equilibrio liquido-vapor - termodinamica
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000051756Documentos Relacionados
- Recuperação de energia na destilação do sistema etanol-agua
- Valorização da glicerina como solvente da destilação extrativa para separação de azeótropo etanol-água
- Osmose de etanol-agua em elastomero de silicona
- Separação adsortiva de misturas etanol-água por processo PSA.
- Comportamento anfótero da di-2-piridil cetona benzoilhidrazona em misturas etanol-água