Prediction of Hydrate Dissociation Conditions for system of Tetrahydrofuran + Water

Utilization of Tetrahydrofuran (THF) is a common way to moderate the hydrate formation conditions. Inthis work, attempts have been made to predict the dissociation conditions for system of THF + water using van derWaals-Platteeuw (vdW-P) solid solution theory. Only 50% of THF +water system with THF concentration in the molefraction range lower than 6% are utilized to optimize the interaction parameters of Kihara potential for the guest THFmolecules.The phase boundaries for system of THF + water and then carbon dioxide + THF + water, methane + THF +water andnitrogen + THF +water in all available concentration ranges are predicted and compared with available literatureexperimental data. The results showed acceptable agreement between predicted and experimental data for the systemsexamined in this study.The Peng-Robinson equation of state was used for determining component fugacities in gasphase and UNIQUAC activity model for calculating activity in liquid phase.