Phase equilibria of H 2S-hydrocarbons (propane, n-butane, and n-pentane) binary systems at low temperatures

Moussa Dicko (1) , Christophe Coquelet (2) , Pascal Théveneau (3) , Pascal Mougin (4)

1 LSPM - Laboratoire des Sciences des Procédés et des Matériaux
2 CEP/Fontainebleau
3 CEP - Centre Énergétique et Procédés
4 IFPEN - IFP Energies nouvelles

Isothermal vapor-liquid equilibrium measurements of three binary systems, H 2S + propane, H 2S + n-butane, and H 2S + n-pentane, have been performed with a static synthetic apparatus at low temperatures. The method of Barker has been implemented to determine the corresponding nonrandom two-liquid (NRTL) parameters and to calculate the liquid mole fractions. The results have been further used along with literature data to adjust binary interaction parameters of the Peng-Robinson equation of state. Good agreement with Dechema values has been found.

Mots clés: Binary interaction parameter; Binary systems; Isothermal vapor-liquid equilibrium; Literature data; Low temperatures; Mole fraction; n-Butane; N-pentane; Non random two liquids; Peng-Robinson equation of state; Butane; Hydrocarbons; Propane

Domaines: Sciences de l'ingénieur [physics]; Génie des procédés

Moussa Dicko, Christophe Coquelet, Pascal Théveneau, Pascal Mougin. Phase equilibria of H 2S-hydrocarbons (propane, n-butane, and n-pentane) binary systems at low temperatures. Journal of Chemical and Engineering Data, 2012, 57 (5), pp.1534-1543. ⟨10.1021/je300111m⟩. ⟨hal-00796474⟩