Methane hydrate phase equilibrium in the presence of salt (NaCl, KCl, or CaCl2) + ethylene glycol or salt (NaCl, KCl, or CaCl2) + methanol aqueous solution: Experimental determination of dissociation condition

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

1 CEP/Fontainebleau

In this communication, we report dissociation conditions of methane hydrates in the presence of salt (NaCl, KCl, or CaCl2) + ethylene glycol or salt (NaCl, KCl, or CaCl2) + methanol aqueous solutions at differ- ent temperatures. The equilibrium data were generated using an isochoric pressure-search method. These data are compared with some selected experimental data from the literature on dissociation con- ditions of methane hydrates in the presence of pure water to show the inhibition effects of the above mentioned aqueous solutions.

Mots clés: Calcium chloride; Dissociation; Ethylene; Ethylene glycol; Hydration; Methane; Methanol; Phase equilibria; Sodium alloys; Sodium chloride; Solutions

Domaines: Génie des procédés

Amir H. Mohammadi, Dominique Richon. Methane hydrate phase equilibrium in the presence of salt (NaCl, KCl, or CaCl2) + ethylene glycol or salt (NaCl, KCl, or CaCl2) + methanol aqueous solution: Experimental determination of dissociation condition. Journal of Chemical Thermodynamics, 2009, 41 (12), pp.1374-1377. ⟨10.1016/j.jct.2009.06.012⟩. ⟨hal-00574251⟩