Phase equilibrium data for the hydrogen sulphide+methane system at temperatures from 186 to 313K and pressures up to about 14MPa

Isothermal vapour-liquid equilibrium data have been measured for the methane-hydrogen sulphide (CH4+H2S) binary system at five temperatures from 186.25 to 313.08K, and pressures between 0.043 and 13.182MPa. The experimental method used in this work is of the static-analytic type, taking advantage of two pneumatic capillary samplers (Rolsi™, Armines' patent) developed in the CTP laboratory. The data were obtained with the following maximum expanded uncertainties (k=2): u(T)=0.06K, u(P)=0.006MPa and the maximum uncertainty for compositions u(x, y)=0.010 for molar compositions. The data have been satisfactorily represented with the classical Peng and Robinson equation of state.