Vapour-liquid equilibrium data for the hydrogen sulphide (H2S) + carbon dioxide (CO2) system at temperatures from 258 to 313 K

Antonin Chapoy, Chrsitophe Coquelet, Haifan Liu, Alain Valtz, Bahman Tohidi Kalorazi

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

From the design of acid injection scheme to the impact of hydrogen sulphide in CCS scheme, knowledge of the phase behaviour of the hydrogen sulphide + carbon dioxide is essential. In this communication, new isothermal vapour-liquid equilibrium measurements for the binary system H2S - CO2 have been conducted at 258.41 K, 273.15 K, 293.47 K and 313.02 K in the pressure range from 1.0 to 5.5 MPa. The experimental method used in this work is of the static-analytic type, taking advantage of two magnetic capillary samplers (Rolsi™, Armines’ Patent) developed in the CTP laboratory. This experimental method allows the sampling in both liquid and vapour phases and their analysis by GC. The data were obtained with uncertainties within ±0.02 K, ±0.002 MPa, and 0.006 for molar compositions. It is demonstrated that both the Peng-Robinson (PR) equation of state (classical or the P-PR78 version) or the Soave - Redlich and Kwong (SRK) equation of state combined with the classical mixing rule and appropriate binary interaction parameters were able to satisfactorily describe the phase behaviour of the H2S-CO2 binary systems.
Original languageEnglish
Pages (from-to)223-228
Number of pages6
JournalFluid Phase Equilibria
Volume356
Early online date2 Aug 2013
DOIs
Publication statusPublished - 25 Oct 2013

Keywords

  • VLE data
  • Hydrogen Sulphide
  • Carbon Dioxide
  • Thermodynamic Modelling

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