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    Effects of Thermally Degraded Monoethylene Glycol with Methyl Diethanolamine and Film-Forming Corrosion Inhibitor on Gas Hydrate Kinetics

    Access Status
    Fulltext not available
    Authors
    Alharooni, K.
    Pack, D.
    Iglauer, S.
    Gubner, Rolf
    Ghodkay, V.
    Barifcani, A.
    Date
    2017
    Type
    Journal Article
    
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    Citation
    Alharooni, K. and Pack, D. and Iglauer, S. and Gubner, R. and Ghodkay, V. and Barifcani, A. 2017. Effects of Thermally Degraded Monoethylene Glycol with Methyl Diethanolamine and Film-Forming Corrosion Inhibitor on Gas Hydrate Kinetics. Energy and Fuels. 31 (6): pp. 6397-6412.
    Source Title
    Energy and Fuels
    DOI
    10.1021/acs.energyfuels.7b00733
    ISSN
    0887-0624
    School
    School of Chemical and Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/54478
    Collection
    • Curtin Research Publications
    Abstract

    Gas hydrate blockage and corrosion are two major flow assurance problems associated with transportation of wet gas through carbon steel pipelines. To reduce these risks, various chemicals are used. Monoethylene glycol (MEG) is injected as a hydrate inhibitor while methyl diethanolamine (MDEA) and film-forming corrosion inhibitor (FFCI) are injected as corrosion inhibitors. A large amount of MEG is used in the field, which imposes the need for MEG regeneration. During MEG regeneration, rich MEG undergoes thermal exposure by distillation to remove the water. This study focuses on analyzing the kinetics of methane gas hydrate with thermally exposed MEG solutions with corrosion inhibitors at 135-200 °C. The study analyses the hydrate inhibition performance of three different solutions at selected concentrations and pressures (50-300 bar), using a PVT cell and isobaric method. Results established that thermally degraded solutions cause hydrate inhibition drop. However, the inhibition drop was found to be lower than that of pure thermally degraded MEG, which is caused by the additional hydrate inhibition effects of MDEA and FFCI. In addition, hydrate phase boundaries and regression functions were reported to provide a deep insight into the operating envelope of thermally degraded MEG solutions.

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    • Analytical Techniques for Analyzing Thermally Degraded Monoethylene Glycol with Methyl Diethanolamine and Film Formation Corrosion Inhibitor
      AlHarooni, K.; Pack, David; Iglauer, Stefan; Gubner, R.; Ghodkay, V.; Barifcani, A. (2016)
      Gas hydrate blockage and corrosion are two major fl ow assurance problems associated with transportation of wet gas through carbon steel pipelines. To reduce these risks, various chemicals are used. Monoethylene glycol ...
    • Analytical Techniques for Analyzing Thermally Degraded Monoethylene Glycol with Methyl Diethanolamine and Film Formation Corrosion Inhibitor
      AlHarooni, K.; Pack, D.; Iglauer, S.; Gubner, R.; Ghodkay, V.; Barifcani, Ahmed (2016)
      Gas hydrate formation and corrosion within gas pipelines are two major flow assurance problems. Various chemical inhibitors are used to overcome these problems, such as monoethylene glycol (MEG) for gas hydrate control ...
    • Corrosion and hydrate formation in natural gas pipelines
      Obanijesu, Emmanuel Ogo-Oluwa (2012)
      Gas industry annually invests millions of dollars on corrosion inhibitors in order to minimize corrosion implications on flow assurance; however, attention has never been focused on possibilities of these chemicals to ...
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