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Production of Methane Hydrates in Dispersed Frozen Aqueous Solutions of Polyvinyl Alcohol

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Abstract

The paper presents the first results of studying the kinetics of the formation of methane hydrates in dispersed frozen aqueous solutions of polyvinyl alcohol (FAS PVA) near the ice melting point under static conditions (without stirring). Based on the obtained experimental data, it was determined for the first time that using FAS PVA significantly (severalfold) decreases the time of conversion of much of the initial water into hydrate in comparison with dispersed ice. Furthermore, it was shown that the formation of gas hydrates in FAS PVA dispersions under static hydrate formation conditions can occur not only at higher rate but also at higher water-to-hydrate conversion in comparison with those in aqueous solutions of surfactants or in “dry water.”

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Funding

This work was performed under a State assignment according to the 2018–2020 Research and Development Plan of the Tyumen Scientific Center, Siberian Branch, Russian Academy of Sciences, Protocol no. 2 of December 8, 2017 (Priority Area IX.135, Program IX.135.2, Project IX.135.2.3 “Mechanisms and Kinetics of Gas Hydrate Formation in Bulk Phases and Porous Media). This work was supported in part by the Russian Foundation for Basic Research (project no. 18–55–11005/18).

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Authors and Affiliations

  1. Institute of the Earth’s Cryosphere, Tyumen Scientific Center, Siberian Branch, Russian Academy of Sciences, 625026, Tyumen, Russia

    V. P. Mel’nikov, L. S. Podenko, A. O. Drachuk & N. S. Molokitina

  2. Tyumen State University, 625003, Tyumen, Russia

    V. P. Mel’nikov, L. S. Podenko, A. O. Drachuk & N. S. Molokitina

  3. Tyumen Industrial University, 625000, Tyumen, Russia

    V. P. Mel’nikov

Authors
  1. V. P. Mel’nikov
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  2. L. S. Podenko
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  3. A. O. Drachuk
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  4. N. S. Molokitina
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Corresponding author

Correspondence to L. S. Podenko.

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Translated by V. Glyanchenko

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Mel’nikov, V.P., Podenko, L.S., Drachuk, A.O. et al. Production of Methane Hydrates in Dispersed Frozen Aqueous Solutions of Polyvinyl Alcohol. Dokl Chem 487, 198–202 (2019). https://doi.org/10.1134/S0012500819070073

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  • DOI: https://doi.org/10.1134/S0012500819070073

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