Modeling of hydrate formation conditions in mixtures of methane, water and acetone

The new model for structure II hydrates in the ternary mixtures methane+water +1,4-dioxane, has been applied to the system methane+water+acetone. Similarly to 1,4-dioxane, acetone also has promoting effects up to a concentration of about 6-mole %. Beyond this concentration, this effect decreases and, gradually, acetone starts to change nature from a gas hydrate-romoting agent into a gas hydrate inhibitor. Based on minimization of the difference between experimental and calculated equilibrium temperatures, the Kihara parameters of acetone have been obtained. The results are in good agreement with the experimental data. The ability and accuracy of this new model are also compared with an existing model.