Exploring the Influence of Surfactants on Methane Hydrate Formation Kinetics Beyond Its Thermodynamic Stability Region from a Supersaturated Solution ’Water + Sodium Lauryl Sulfate + Methane’
K. V. Gets, R. K. Zhdanov, Y. Y. Bozhko, O. S. Subbotin, V. R. Belosludov
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Abstract
In this paper, the effect of sodium lauryl sulfate (SDS) molecules in a homogeneous and already supersaturated aqueous methane solution on the structure of the hydrogen bond network and the kinetics of methane hydrate growth at moderate temperature and pressure is studied by the molecular dynamics method. From calculation of the number of hydrogen bonds and parameters of the tetragonal and torsion orders in comparison with a water + SDS solution and a pure water + methane solution, it is shown that the hydrate growth rate and its crystallinity grow as the methane concentration in the supersaturated solution decreases. In this case, increase in the SDS concentration in a solution with a higher gas concentration leads to phase separation.
期刊介绍：
Journal of Engineering Thermophysics is an international peer reviewed journal that publishes original articles. The journal welcomes original articles on thermophysics from all countries in the English language. The journal focuses on experimental work, theory, analysis, and computational studies for better understanding of engineering and environmental aspects of thermophysics. The editorial board encourages the authors to submit papers with emphasis on new scientific aspects in experimental and visualization techniques, mathematical models of thermophysical process, energy, and environmental applications. Journal of Engineering Thermophysics covers all subject matter related to thermophysics, including heat and mass transfer, multiphase flow, conduction, radiation, combustion, thermo-gas dynamics, rarefied gas flow, environmental protection in power engineering, and many others.
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