Methane hydrate phase equilibrium in the presence of NaBr, KBr, CaBr2, K2CO3, and MgCl2 aqueous solutions: Experimental measurements and predictions of dissociation conditions

International audienceIn this communication, experimental data for dissociation conditions of methane hydrates in the pres- ence of 0.05 and 0.1 mass fractions NaBr, KBr, K2CO3, and MgCl2 aqueous solutions and in the presence of 0.05 and 0.15 mass fractions CaBr2 aqueous solutions are reported. The experimental data were gen- erated using an isochoric pressure-search method. The new experimental dissociation data for methane hydrates in the presence of 0.1 mass fraction MgCl2 aqueous solution are compared with some selected experimental data from the literature and the agreements are generally found acceptable. Some of new data are finally compared with the predictions of a correlation, which is generally used in the absence of experimental data, and acceptable agreements between the experimental and predicted data are observed

Experimental Data and Predictions of Dissociation Conditions for Methane, Ethane, Propane, and Carbon Dioxide Simple Hydrates in the Presence of Glycerol Aqueous Solutions

International audienceExperimental dissociation data for methane, ethane, and carbon dioxide simple hydrates in the presence of 0.1 and 0.4 mass fraction glycerol aqueous solutions and dissociation data for propane simple hydrates in the presence of 0.1 mass fraction glycerol aqueous solution are reported in this communication. The experimental data were generated using a reliable isochoric pressure-search method. The new experimental dissociation data for carbon dioxide simple hydrates in the presence of 0.1 mass fraction glycerol aqueous solution are compared with the experimental data reported in the literature and the agreements are generally found acceptable. All the experimental data are finally compared with the predictions of a general correlation and acceptable agreements between the experimental and predicted data are generally observed