Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Densities and derived thermophysical properties of the 0.9505 CO2 + 0.0495 H2S mixture from 273 K to 353 K and pressures up to 41 MPa

Nazeri, M.[Mahmoud], Chapoy, A.[Antonin], Valtz, A.[Alain], Coquelet, C.[Christophe], Tohidi, B.[Bahman]
Fluid Phase Equilib. 2016, 423, 156-171
ABSTRACT
From the development of sour reserves and acid gas injection into oil reservoirs to the impact of hydrogen sulfide in CCS scheme, knowledge of the phase behaviour and thermophysical properties of the hydrogen sulfide p carbon dioxide is essential. Due to the toxicity of CO2 - H2S system, there are few experimental data available in the literature. The aim of this work is to investigate the densities and thermodynamic properties of acid gases and liquids. Densities of the 95.05 mol% CO2 p4.95 mol% H2S binary system were measured continuously using a high temperature and pressure Vibrating Tube Densitometer (VTD), Anton Paar DMA 512 at pressures up to 41 MPa at five different temperatures, (273, 283, 298, 323 and 353) K in gas, liquid and supercritical regions. The specific heat capacity, compressibility factor, dew point and bubble point of the system have also been derived from the measured density data. The experimental data then were employed to evaluate the GERG-2008 equations of state and classical cubic equations of state (PR, SRK and VPT) with a CO2 volume correction model as well as volume translation.
Compounds
# Formula Name
1 H2S hydrogen sulfide
2 CO2 carbon dioxide
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
  • 2
  • 1
  • Mass density, kg/m3 ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Mole fraction - 2; Gas
  • Gas
  • Vibrating tube method
  • 109
  • POMD
  • 2
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Vibrating tube method
  • 222
  • POMD
  • 2
  • 1
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 119
  • POMD
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Gas
  • Temperature, K; Gas
  • Mass density, kg/m3; Gas
  • Gas
  • Liquid
  • break point
  • 3
  • POMD
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mass density, kg/m3; Liquid
  • Liquid
  • Gas
  • break point
  • 3