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Inhibiting Gas Hydrate Formation by Polymer–Monoethylene Glycol Mixture

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Chemistry and Technology of Fuels and Oils Aims and scope

Inhibition of formation of methane hydrate with cubic structure CS-I and methane-propane (95.66 CH4 + 4.34 C3H8 mole %) hydrate with cubic structure CS-II by isothermal method and method of cooling at the constant rate of 2°C/h, using 0.5% of a kinetic inhibitor (KIH) + 20.8% of the thermodynamic inhibitor (TIH) monoethylene glycol (MEG) is studied. It is shown that the synergic effect of increase in inhibiting capacity of a polymeric kinetic inhibitor (KIH) in the presence of 20.8% of MEG (TIH) is observed in the case of both methane hydrate and methane-propane hydrate inhibition. The synergy manifests itself in the form of increase in supercooling degree by 2.5-3°C that is attained in the KIH + TIH system before the initiation of hydrate formation as compared to a system that contains no TIH (MEG). The induction time is shown to depend on the degree of supercooling in the system while inhibiting CS-1 and CS-II hydrates with 0.5% KIH + 20.8% MEG. The obtained data indicate that KIH + MEG antihydrate reagents can be used to inhibit formation of technogenous gas hydrates at < 0C temperatures.

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Authors and Affiliations

  1. I. M. Gubkin Russian State University of Oil and Gas, Moscow, Russia

    A. P. Semenov, V. I. Medvedev, P. A. Gushchin, V. S. Yakushev & V. A. Vinokurov

Authors
  1. A. P. Semenov
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  2. V. I. Medvedev
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  3. P. A. Gushchin
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  4. V. S. Yakushev
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  5. V. A. Vinokurov
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Corresponding author

Correspondence to A. P. Semenov.

Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 29 – 33, January– February, 2016.

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Semenov, A.P., Medvedev, V.I., Gushchin, P.A. et al. Inhibiting Gas Hydrate Formation by Polymer–Monoethylene Glycol Mixture. Chem Technol Fuels Oils 52, 43–51 (2016). https://doi.org/10.1007/s10553-016-0671-8

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  • DOI: https://doi.org/10.1007/s10553-016-0671-8

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