Vapour-Liquid Equilibria of Ethane and Ethanethiol: Experiments and Modelling

Waheed Afzal* (Corresponding Author), Alain Valtz, Christophe Coquelet

*Corresponding author for this work

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This work reports high-quality isothermal vapor–liquid equilibrium data for ethane + ethanethiol (or ethyl mercaptan) at 303 K, 323 K and 343 K and pressures up to 6.25 MPa. A sapphire-tube equilibrium cell with an online micro sampler and GC-TCD are employed to measure equilibrium phase concentrations at specific temperatures and pressures. Peng Robinson equation of state with classical alpha function is found adequate for data treatment and thermodynamic modelling.
Original languageEnglish
Pages (from-to)96-108
Number of pages13
JournalJournal of Natural Gas Engineering
Issue number2
Publication statusPublished - 31 Dec 2018


  • VLE data
  • Peng Robinson EoS
  • NRTL model
  • sulphur species
  • alkanethiol
  • alkanes
  • nature gas


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