Experimental investigations of methane hydrate in sediment suspensions

  • Authors

    • Ikkurti Radhika
    • Pinnelli S. R. Prasad
    • Devarasetty Suresh Babu
    2018-09-22
    https://doi.org/10.14419/ijet.v7i4.5.21178
  • Gas Hydrates, Methane, Phase Equilibrium.

  • Methane hydrate structural stability and formation, were studied in water suspensions with synthetic clay (44.17nm),SiO2(60.62nm) and zeolite (35.08nm) at different weight percentages (1wt%,10wt%,20wt%) in isochoric method using stirred autoclave. The for- mation kinetics in these sediments greatly differs from those of the bulk hydrate owing to surface and capillary effects in the pores. It has been confirmed that hydrate formation in confined pores is severely restricted due to increased inner capillary pressure. Further- more in principle , the clay particles suspended in water play a negative role in structuring the crystalline hydrate .More specifically, even though the addition of clay enhances the hydrate yield insignificantly, from our results, the addition of sediments did not affect the phase equilibrium much because water exists in excess around clay particles and therefore the hydrate formed in the bulk water phase is much more dominant than that in the pores.

     

  • References

    1. [1] An experimental investigation into the effects of zeolites on the for- mation of methane hydrates Int.J.Energy Res (2014) Nam-Jin Kim,Sung- Seek Park et .al.

      [2] Ryu YB, Lee JD, Kim YS, Yoon SY, Lee MS. Influence of nanosized Materials on the formation of CH4 hydrate. Proceedings of the sixth Inter- national Conference on Gas Hydrates, Vancouver, Canada, http://www.icgh.org 2008.

      [3] Lin W, Chen GJ, Sun CY, Guo XQ, Wu ZK, Liang MY, Chen LT, Yang LY. Effect of surfactant on the formation and dissociation kinetic behaviour of methane hydrate. Chemical Engineering Science 2004; 59:4449–4455.

      [4] THERMODYNAMICS AND CHEMICAL ENGINEERING DATA Chinese Journal of Chemical Engineering, 18(2) 292􀃼296 (2010) Influ- ence of Pore Size, Salinity and Gas Composition upon the Hydrate For- mation Conditions* YANG Mingjun (􀃼􀃼􀃼) 1, SONG Yongchen (􀃼􀃼􀃼) 1,**, LIU Yu (􀃼􀃼)1, CHEN Yongjun (􀃼􀃼􀃼)1 and LI Qingping (􀃼􀃼􀃼)2.

      [5] Sun Z, Wang R, Ma R, Kaihua G, Fan S. Effect of surfactants and liquid hydrocarbons on gas hydrate formation rate and storage capacity. International Journal of Energy Research 2003; 27(8):747–756.

      [6] Seo YW, Lee SM, Seo YT, Lee JD, Lee H. Phase equilibria and thermodynamic modelling of ethane hydrate in porous silica gels. Pro- ceedings of the 6th International Conference on Gas Hydrates,Vancouver, Canada, http://www.icgh.org 2008.

      [7] Methane hydrates formation and dissociation in nano silica suspension by Vangala Dhanunjana Chari a,b, Deepala V.S.G.K. Sharma a, Pinnelli S.R. Prasad a,*, Sarabu Ramana Murthy b.

      [8] Masoudi, R., Tohidi, B., Danesh, A., Todd, A.C., Anderson, R., Bur-gass,R.W., Yang, J.H., “Measurement and prediction of gas hydrate and hydrated salt equilibria in aqueous ethylene glycol and electrolyte solu- tionsâ€, Chem. Eng. Sci., 60, 4213ô€ƒ¼4224 (2005).

      [9] Bi, Y.H., Guo, T.W., Zhu, T.Y., Zhang, L., Chen, L.G.., “Influences of additives on the gas hydrate cool storage process in a new gas hydrate cool storage systemâ€, Energy Conversion and Management, 2974ô€ƒ¼2982 (2006).

      [10] Hill, J., Harris, A.W., Manning, M., Chambers, A., Swanton, S. W., “The effect of sodium chloride on the dissolution of calcium silicate hydrate gelsâ€, Waste Management, 26, 758ô€ƒ¼768 (2006).

      [11] Buffett, B.A., Zatsepina, O.Y., “Formation of gas hydrate from dis- solved gas in natural porous mediaâ€, Marine Geology, 164, 69ô€ƒ¼77 (2000). [12] .Yan LJ, Chen GJ, Pang WX, Liu J. Experimental and modelling study on hydrate formation in wet activated carbon. Journal of Physical.

      [12] Chemistry 2005; 109:6025–6030.

      [13] Effect of multi-walled carbon nanotubes on methane hydrate for- mation by Sung-Seek Parka, Sang-Baek Leeb,Nam-Jin Kim, Journal of Industrial and Engineering Chemistry, Volume 16, Issue 4, 25July 2010 Pages 551–555.

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  • How to Cite

    Radhika, I., S. R. Prasad, P., & Suresh Babu, D. (2018). Experimental investigations of methane hydrate in sediment suspensions. International Journal of Engineering & Technology, 7(4.5), 651-653. https://doi.org/10.14419/ijet.v7i4.5.21178