2013 1(12)

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Nakoryakov V.E., Misyura S.Ya.

Institute of Thermophysics SB RAS, Novosibirsk, Russia


Nakoryakov, V.E. and Misyura, S.Ya., (2013) The effect of nonisothermal conditions on dissociation of methane hydrate at negative temperatures, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(12), PP. 68 - 72.


hydrates; heat- and mass-transfer; dissociation


An experimental study of the dissociation of methane hydrate in the presence of air at a pressure of 1 bar. At destruction of clathrate is necessary to consider not only the degree of deviation of the temperature and pressure in equilibrium values , but the rate of transfer of heat and mass, and the characteristic speed of the physical processes such as crystallization, diffusion, material ductility. Different speeds of heat and mass transfer were implemented by changing the heat fl ow. The maximum speed of the hydrate decomposition was observed during combustion of methane on the surface of the phase (hydrate - gas), which is an order of magnitude higher than the speed of dissociation without burning. Measurement of the concentration of methane was carried weight, volume and X-ray diffraction method. Measurement of the instantaneous velocity of dissociation possible to identify a few specific time intervals with significantly different reaction rates, and highlight the short-term treatment of abnormally low dissociation rate - the phenomenon of “self-preservation”.


  1. Chernov A.A., Dontsov V.E., The processes of dissolution and hydrate forming behind the shock wave in the gas-liquid medium with gas mixture bubbles // Int.J. Heat Mass Transfer. - 2011, - 54, P. 4307 - 4316.

  2. Takahashi M., Moriya H., Katoh Y., Iwasaki T., Development of Natural Gas Hydrate (NGH) Pellet Production System by Bench Scale Unit for Transportation and Storage of NGH Pellet // In Proceeding 06 6th International Conference on Gas Hydrates, -Vancouver, Canada, 6 - 10 July, 2008.

  3. Istomin V.A., Yakushev V.S. Gas Hydrates in Nature, Nedra, Moscow, 1992

  4. Yakushev V.S., Istomin V.A., Physics and Chemistry of Ice // Hokkaido University Press, Sapporo. - 1992. - P. 136.

  5. Zhang G., Rogers R.E., Ultra-stability of gas hydrates at 1 atm and 268,2K // Chemical Engineering Science. - 2008. - 63. - P. 20662074.

  6. Kuhs W.F., Genov G., Staykova D.K., Hansen T., Ice perfection and onset of anomalous preservation of gas hydrates // Phys.Chem. Chem.Phys. - 2004. - 6. - P. 4917-4920.

  7. Takeya S., Ebinuma T., Uchida T., Nagao J., Narit H., Self-preservation effect and dissociation rates of CH4 hydrate // Journal of Crystal Growth. - 237-239. - 2002, P. 379-382.

  8. Shimada W., Takeya S., Kamata Y., Uchida T., Nagao J., Ebinuma T., Narita H., Texture change of ice on anomalously preserved methane clathrate hydrate // J. Phys. Chem. -2005. - B. - 109. - P. 5802-5807.

  9. Stern L.A., Circone, S., Kirby S.H., Durham W.B., Anomalous preservation of pure methane hydrate at 1 atm. // J. Phys. Chem. - 2001. - B. - 105. - P. 1756-1762.

  10. Maruyama Y., Yokomori T., Ohmura R., Ueda T., Flame spreading over combustible hydrate in a laminar boundary layer // 7th International Conference on Gas Hydrates (ICGH) . - 2011. - Edinburgh, Scotland, United Kingdom, July 17-21.

  11. Takeuchi M., Ueda T., Amari T., Mizomoto M. Stability of diffusion flame formed in a laminar flat plate boundary layer (Effect of fuel dilution) // Transaction of the JSME. - 1998. - 64. - 626, - P. 3485-3490.

  12. Nakamura Y., Katsuki R., Yokomori T., Ohmura R., Takahashi M., Iwasaki T., Uchida K., Ueda T., Combustion characteristics of methane hydrate in a laminar boundary layer. // Energy & Fuels. - 2009. - 23. - P. 14451449.

  13. Maruyama, Y., Fuse, M.J., Yokomori, T., Ohmura, R., Watanabe, S., Iwasaki, T., Iwabuchi, W., Ueda, T., Experimental investigation of flame spreading over pure methane hydrate in a laminar boundary layer // Proceedings of the Combustion Institute. - 2013. - 34, P. 2131-2138.

  14. Nakoryakov V.E, Misyura S.Ya., Elistratov S.L., Manakov A.Yu., Shubnikov A.E., Combustion of Methane Hydrates // Journal of Engineering Thermophysics. - 2013. - V. 22. - № 2. - Р. 87-92.

  15. Christiansen E.D., Sloan E.D., in: Proceedings of the 74th Annual Convention of the Gas Processors Association, San Antonio, 13-15. - March. - 1995.

  16. Falenty A., Kuhs W.F., "Self-preservation" of CO2 gas hydrates-surface microstructure and ice perfection // J. Phys. Chem. - 2009. - B. 113, P. 15975-15988.

  17. Hiroshi Ohno, Hideo Narita, Jiro Nagao. Different modes of gas hydrate dissociation to ice observed by microfocus X-ray computed tomography // J. Phys. Chem. Lett. - 2011, - 2, P. - 201-205.



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