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

Waheed Afzal (1) , Alain Valtz (1) , Christophe Coquelet (1)

1 CTP - Centre Thermodynamique des Procédés

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.

Mots clés: nature gas; VLE data; Peng Robinson EoS; alkanethiol; alkanes; NRTL model; sulphur species

Domaines: Génie des procédés; Génie chimique; Chimie théorique et/ou physique

Waheed Afzal, Alain Valtz, Christophe Coquelet. Vapour-Liquid Equilibria of Ethane and Ethanethiol: Experiments and Modelling. Journal of Natural Gas Engineering , 2019, 3 (2), pp.96-108. ⟨10.7569/jnge.2018.692505⟩. ⟨hal-01984903⟩