PREDICTION OF EQUILIBRIUM CONDITIONS FOR GAS HYDRATE FORMATION IN THEMIXTURES OF BOTH ELECTROLYTES AND ALCOHOL

Based on our previous method of prediction of equilibrium conditions i n the separate solutions of electrolytes and alcohol, a combining rule for calculating hydrate formation temperature in the presence of both electrolytes and alcohol has been developed. In this method, the hydr ate temperature in the presence of pure water is calculated and then t his temperature is corrected for the presence of both electrolytes and alcohol. The average of absolute deviation for prediction of incipien t of CO2 and a typical natural gas hydrate in the mixtures of both ele ctrolytes and alcohol was 0.96 K. The ability of the proposed model is also compared with other available methods. (C) 1998 Elsevier Science B.V. AII rights reserved.