Thermodynamic Model for the Prediction of Equilibrium Conditions of Clathrate Hydrates of Methane + Water-Soluble or -Insoluble Hydrate Former

摘要: In this communication, equilibrium conditions of clathrate hydrates cyclopentane, cylcohexane, acetone, or 1,4-dioxane + methane, which form structure II, and 1,1-dimethylcyclohexane, 2,2-dimethylpentane, methylcyclohexane, cis-1,2-dimethylcyclohexane H, are modeled. The thermodynamic model is based on the van der Waals–Platteeuw solid solution theory combined with an equation state activity model. Peng–Robinson (PR) Soave–Redlich–Kwong (SRK) equations random mixing rules used to gas phase, while UNIFAC method liquid phase(s). It shown that use PR leads better predictions hydrate aforementioned water-insoluble heavy hydrocarbons, SRK causes latter water-soluble formers.