Phase equilibria of clathrate hydrates of methane + n-propuyl mercaptan or n-butyl mercaptan + water system

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

1 CEP/Fontainebleau

In this work, we report dissociation pressures for clathrate hydrates of the methane + n-propyl mercaptan + water and methane + n-butyl mercaptan + water systems in the temperature ranges of 282.3-289.9 K and 279.4-287.4 K, respectively. The experimental data were measured using an isochoric pressure search method. The hydrate dissociation data for both measured systems are compared with some selected literature data for the dissociation conditions of methane clathrate hydrates. It is shown that n-propyl mercaptan has a thermodynamic promotion effect on methane clathrate hydrates while n-butyl mercaptan has a negligible effect.

Mots clés: Clathrate hydrate; Dissociation conditions; Dissociation pressure; Experimental data; Hydrate dissociation; Literature data; Measured system; Methane clathrate hydrate; N-propyl; Promotion effects; Search method; Temperature range; Water system; Phase equilibria

Domaines: Génie des procédés

Amir H. Mohammadi, Dominique Richon. Phase equilibria of clathrate hydrates of methane + n-propuyl mercaptan or n-butyl mercaptan + water system. Industrial and engineering chemistry research, 2012, 51 (9), pp.3841-3843. ⟨10.1021/ie202976p⟩. ⟨hal-00796138⟩