Modeling of Methane Hydrate Decomposition by Using Chemical Affinity

Document Type : Research Note


Faculty of Chemical, Gas and Petroleum Engineering,, Semnan University, Pardis No. 1, Semnan, I.R. IRAN


In this work, experimental kinetics data of methane hydrate decomposition at temperatures ranging from 272.15 to 276.15 K and at pressures ranging from 10 to 30 bars were modeled by using chemical affinity. This model proposed a macroscopic model which is independent of any intermediate mechanism like heat or mass transfer. The results show there is good agreement with experimental data. Also the two parameters of model were calculated and correlation coefficient of model is higher than 0.9.


Main Subjects

[1] Vysniauskus A., Bishnoi P.R., Kinetics of Ethane Hydrate Formation, Chemical Engineering Science 40, p. 299 (1980).
[2] Englezos P., Dholabhai P., Kalogerakis N., Bishnoi, P.R., Kinetics of Formation of Methane and Ethane Gas Hydrates, Chemical Engineering Science, 42, p. 2647 (1987).
[3] Ullerich J.W., Selim M.S., Sloan E.D., Theory and Measurement of Hydrate Dissociation, AIChE Journal, 33, p. 747 (1987).
[4] Kim H.C., Bishnoi P.R., Heideman R.A., Rizvi S.S.H., Kinetics of Methane Hydrate Decomposition, Chemical Engineering Science, 42, p. 16453 (1987).
[5] Kamath V.A., Godbole S. P., Evaluation of Hot-brine Simulation Technique for Gas Production from Natural Gas Hydrates, J. Pet. Tech., 39, p. 1379 (1987).
[6] Clarke M., Bishnoi P.R., Determination of the Intrinsic Rate of Ethane Gas Hydrate Decomposition, Chemical Engineering Science, 55, p. 4869 (2000).
[7] Clarke M., Bishnoi P.R., Measuring and Modeling the Rate of Decomposition of Gas Hydrates Formed from Mixtures of the Methane and Ethane, Chemical Engineering Science, 56, p. 4715 (2001).
[8] Izadpanah A.A., Kinetics of Hydrate Formation Based on Thermodynamic Natural Path to Chemical Reaction Kinetics, Ph.D. Thesis, Tarbiat Modares University, pp. 109-124 (2006).
[9] De Donder T., L'Affinite, Acad. R. Belg. Bull. Class Sci., 5, p. 197 (1992).
[10] Prigogine I., Defay R., "Chemical Thermodynamics", J. Wiley, New York, (1962).
[11] Garfinkle  M.,  Natural  Path  in  Chemical Thermodynamics, J. Phys. Chem., 93, p. 2158 (1989).
[12] Izadpanah A.A., Vafaie ُُSefti M., VaraminianF., Experimental Data and Modeling of Hydrate Formation Based on Thermodynamic Natural Path to Chemical Reaction Kinetics, Iran. J. Chem. and Chem. Eng., 25 (3), (2006).