Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Vapor-Liquid Equilibria for the Binary System Difluoromethane (HFC-32) + Propane (HC-290) at Seven Temperatures [(268.15, 278.15, 283.15, 288.15, 298.15, 308.15, and 318.15) K]

Lee, B. G.[Byung Gwon], Yang, W.-J.[Woong-Jo], Lim, J. S.[Jong Sung]
J. Chem. Eng. Data 2003, 48, 4, 841-846
ABSTRACT
Isothermal vapor-liquid equilibria for the binary mixtures of difluoromethane (HFC-32) + propane (HC- 290) were measured at (268.15, 278.15, 283.15, 288.15, 298.15, 308.15, and 318.15) K. The experiments were carried out using a circulation-type equilibrium apparatus with the measurement of temperature, pressure, and the compositions of the liquid and vapor phases. The experimental data were correlated with the Peng-Robinson equation of state using the Wong and Sandler mixing rules and the Carnahan-Starling-Desantis equation of state. Calculated results with these equations showed good agreement with the experimental data, but the Peng-Robinson equation of state gave more accurate calculations for the binary systems. It was found that this system has a very strong positive azeotrope for all the temperature range studied here.
Compounds
# Formula Name
1 CH2F2 difluoromethane
2 C3H8 propane
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
  • EBULLIO:UFactor:32:dPV:.001
  • 7
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • EBULLIO:UFactor:32:dPV:.001
  • 7
  • POMD
  • 2
  • 1
  • Azeotropic pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • By P(X) extreme
  • 7
  • POMD
  • 2
  • 1
  • Azeotropic temperature, K ; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • By T(X) extreme
  • 7
  • POMD
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • EBULLIO:UFactor:16
  • 49
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • CHROM:UFactor:4
  • 49