Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

High-temperature vapour liquid equilibrium for the water alcohol systems and modeling with SAFT-VR: 1. Water ethanol

Cristino, A. F., Rosa, S., Morgado, P., Galindo, A., Filipe, E. J. M., Palavra, A. M. F., Nieto de Castro, C. A.
Fluid Phase Equilib. 2013, 341, 48-53
ABSTRACT
Linear alcohols represent an important alternative source of energy. The design of industrial processing equipment of these alcohols needs accurate vapour liquid equilibrium (VLE) measurements of binary mixtures with water at high temperatures. A flow apparatus was built to carry out vapour liquid equilibrium at high temperatures for water alcohol binary mixtures in the temperature range of 363 443 K and pressures up to 1.7 MPa. Experimental VLE data are presented for water ethanol system for temperatures between 363.3 and 423.7 K, and pressures up to 1 MPa and compared with available literature data. Its performance was found to be commensurate with the design parameters and the required accuracy. The statistical associating fluid theory for potentials of variable range (SAFT-VR) was used to correlate the data. The phase equilibria for this system are accurately described with this approach, especially considering that the parameters were obtained for a shorter region of the phase diagram.
Compounds
# Formula Name
1 H2O water
2 C2H6O ethanol
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 5
  • POMD
  • 2
  • 1
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Gas
  • Liquid
  • Gas
  • Density calibration data
  • 76
  • POMD
  • 2
  • 1
  • Mole fraction - 2 ; Gas
  • Temperature, K; Liquid
  • Pressure, kPa; Gas
  • Gas
  • Liquid
  • Density calibration data
  • 76