Phase equilibria of hydrogen sulphide clathrate hydrates in the presence of single or mixed salt aqueous solution

Amir H. Mohammadi (1) , Dominique Richon (1)

1 CEP/Fontainebleau

This work reports the dissociation pressures of hydrogen sulphide clathrate hydrates in the presence of single and mixed aqueous solutions of NaCl, KCl and CaCl 2 at different temperatures and various concentrations of salt(s) in aqueous solution. The equilibrium data were generated using an isochoric pressure-search method. These data are compared with some selected experimental data from the literature on the dissociation conditions of hydrogen sulphide clathrate hydrates in the presence of pure water to show the inhibition effects of the aforementioned aqueous solutions. Comparisons between our experimental data and the corresponding literature data show some disagreements in the literature data.

Mots clés: CaCl 2; Dissociation condition; Gas hydrate; Hydrogen sulphide; KCl; NaCl; Clathrate hydrate

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

Amir H. Mohammadi, Dominique Richon. Phase equilibria of hydrogen sulphide clathrate hydrates in the presence of single or mixed salt aqueous solution. Journal of Chemical Thermodynamics, 2012, 53, pp.82-85. ⟨10.1016/j.jct.2012.04.010⟩. ⟨hal-00796916⟩