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    Development of a thermodynamic model for CH₄, CO₂, CH₄-CO₂ gas hydrate systems

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    Author
    Kulkarni, Abhijeet S.
    Chair
    Zhu, Tao
    Committee
    McGrail, B. P.
    Chen, Gang
    Patil, Shirish L.
    Ogbe, David O.
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/6016
    Abstract
    An equation of state (EOS) software module was developed for CH4, CO2, and CH4-CO2 gas hydrates using the van der Waals-Platteeuw model. The model is based on classical thermodynamics and is used to predict the thermodynamic behavior of gas hydrates including the pressure and temperature at which gas hydrates form. A numerical scheme was developed for solving I-H-V, Lw-H-V, and Lw-H-Lhc equilibrium conditions for bulk hydrate formation from pure water and hydrocarbon. The model was further extended to determine hydrate equilibrium conditions in the presence of porous media of different radii. The numerical scheme was modified to account for the effect of salt on hydrate phase equilibrium. The results obtained from the model were in close agreement with the experimental data reported in literature. The main contribution of this work is that the proposed model can predict hydrate dissociation pressures at temperatures above 285 K more accurately than any of the available models.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2005
    Date
    2005-05
    Type
    Thesis
    Collections
    Engineering

    entitlement

     
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