摘要
A fugacity model was developed for prediction of mixed refrigerant gas hydrates formation conditions based on the molecule congregation and solution theories. In this model, gas hydrates were regarded as non-ideal solid solution composed of water groups and vip molecules, and the expressions of fugacity of vip molecules in hydrate phase was proposed accordingly. It has been shown that the developed model can indicate successfully the effect of vip-vip molecule interaction. The results showed that the model can describe better the characteristics of phase equilibrium of mixed refrigerant gas hydrates and predictions are in good agreement with experimental data.
