A Thermodynamic Study of Methane Hydrates Formation In Glass Beads

https://doi.org/10.22146/ajche.49670

Tintin Mutiara(1*), Budhijanto Budhijanto(2), I Made Bendiyasa(3), Imam Prasetyo(4)

(1) Department of Chemical Engineering, Gadjah Mada University, Jl. Grafika No.2, Yogyakarta, Indonesia 55281; Department of Chemical Engineering, Islamic University of Indonesia, Jl. Kaliurang km.14.5 Yogyakarta, Indonesia 55584
(2) Department of Chemical Engineering, Gadjah Mada University, Jl. Grafika No.2, Yogyakarta, Indonesia 55281
(3) Department of Chemical Engineering, Gadjah Mada University, Jl. Grafika No.2, Yogyakarta, Indonesia 55281
(4) Department of Chemical Engineering, Gadjah Mada University, Jl. Grafika No.2, Yogyakarta, Indonesia 55281
(*) Corresponding Author

Abstract


Natural gas hydrates are non-stoichiometry compounds, in which the molecules of gas are trapped in crystalline cells consisting of water molecules retained by energy of hydrogen bonds. The experiments of Methane hydrate formation are performed at constant temperature in a reactor filled with various sizes of glass beads and water. Methane gas was fed into the reactor at various initial pressures. Equilibrium condition was reached when the system pressure did not change. The experimental results showed that the size of the glass beads gave very small effect on the equilibrium pressure of methane hydrate formation, so the effect could be neglected. In this study, the equation of Langmuir constant was Ci,CH4=(1/RT)exp[A+(B/T)] with the values of A and B for small cages were 6.8465 and 18.0342. The values of A and B for large cages were 7.7598 and 18.0361

Keywords


equilibrium, thermodynamic, methane hydrates, glass beads

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References

  1. Cao, Z., Tester, J.W., Sparks, K.A., and Trout, B.L. (2001). Molecular computating using robust hydrocarbon- water potentials for prediction gas hydrates phase equilibria, J.Phys.Chem.B 105, 10950-10960.
  2. Duan, Z., and Sun, R. (2007). An accurate model to predict the thermodynamic stability of methane hydrate and methane solubility in marine environments, Chemical Geology 244 (2007) 248–262.
  3. Duan, Z., Li, D., Yali, C., and Sun, R. (2011). The influence of temperature, pressure, salinity and capillary force on the formation of methane hydrate, Geoscience Frontiers 2(2) (2011) 125- 135.
  4. Holder, G.D., Corbin, G., and Papadopoulos, K.D. (1980). Thermodynamic and molecular properties of gas hydrates from mixtures containing methane, argon, and krypton, Ind. Eng. Chem. Fundam. 19, 282–286.
  5. Jung J.W., and Santamarina, J.C. (2012). Hydrate formation and growth in pores, Journal of Crystal Growth 345 (2012) 61–68.
  6. Seong-Pil,K., Ho-Jung,R., and Yongwon, S. (2007). Phase behavior of CO2 and CH4 hydrate in porous media, world academy of science, Engineering and Technology 33.
  7. Klauda, J.B., and Sandler, S.I. (2002). Ab initio intermolecular potentials for gas hydrates and their predictions, J.Phys.Chem. B 106, 5722-5732.
  8. Klauda, J.B., and Sandler, S.I., 2003, Phase Behavior of Clathrate Hydrates : A Model for Single and Multiple Gas Component Hydrates, Chem.eng.Sci. 58, 27-41.
  9. Liang, S., Rozmanov, D., and Kusalik, P.G. (2011). Crystal growth simulations of methane hydrates in the presence of silica surfaces, Phys. Chem. Chem. Phys., 2011, 13, 19856–19864.
  10. Makogon, Y.F., Holditch, S.A., and Makogon, T.Y. (2007). Natural gas hydrates - a potential energy source for the 21st century, Journal of Petroleum Science and Engineering.
  11. Sloan E.D., and Koh C.A. (2008). Clathrate hydrates of natural gases, 3rd Ed., Taylor and Francis Group, USA.
  12. Thomas, E. (2004). Clathrates: little known components of the global carbon cycle, Wesleyan University.
  13. Van der Waals, J.H., and Platteeuw, J.C. (1959). Clathrate solutions, In : Prigogine, I. (Ed.), Advances in Chemical Physics. Interscience.



DOI: https://doi.org/10.22146/ajche.49670

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