Phase equilibria of clathrate hydrates of methane + carbon dioxide: New experimental data and predictions

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

1 CEP/Fontainebleau

In this communication, we report experimental dissociation conditions for region clathrate hydrates of methane + carbon dioxide in gas–liquid water–hydrate (G–Lw–H) equilibrium. The temperature and pressure conditions are in the range of (279.1–289.9) K and (2.96–13.06) MPa, respectively. Concentra- tions of carbon dioxide in the feed gas are also varied. An isochoric pressure-search method was used to perform the measurements. The dissociation data generated in this work along with the literature data are compared with the predictions of a thermodynamic model and a previously reported empirical equation. A discussion is made on the deviations between the experimental and predicted data.

Mots clés: Gas hydrate; Methane; Carbon dioxide; Dissociation conditions data; Experimental; Model

Domaines: Génie des procédés

Dominique Richon, Amir H. Mohammadi. Phase equilibria of clathrate hydrates of methane + carbon dioxide: New experimental data and predictions. Fluid Phase Equilibria, 2010, 296, pp.60-65. ⟨10.1016/j.fluid.2010.03.038⟩. ⟨hal-00573803⟩