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Dissociation Behaviors of CO 2 Hydrate-Bearing Sediment Particle during Settling in Water

Author

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  • Peng Li

    (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xuhui Zhang

    (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xiaobing Lu

    (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

Dissociation processes of gas hydrate-bearing sediment particles in water flow condition were investigated. Experiments were carried out by observing a spherical CO 2 hydrate-bearing sediment (CHBS) particle settling in water. The release process of gas bubbles from CHBS particles was recorded by a high-speed camera and the total time of dissociation was obtained for different particle diameters and water temperatures. An intrinsic dissociation model was presented based on the assumption that the dissociation rate of the CHBS particle is exponential with the concentration of remaining hydrate. The model considered the influences of changing temperature, pressure and the particle concentration on the dissociation rate. The constants in the model were obtained based on fitting the experimental data. The presented model can reveal the dissociation behavior of the CHBS particle.

Suggested Citation

  • Peng Li & Xuhui Zhang & Xiaobing Lu, 2018. "Dissociation Behaviors of CO 2 Hydrate-Bearing Sediment Particle during Settling in Water," Energies, MDPI, vol. 11(11), pages 1-12, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:2896-:d:178073
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    References listed on IDEAS

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    1. Song, Yongchen & Yang, Lei & Zhao, Jiafei & Liu, Weiguo & Yang, Mingjun & Li, Yanghui & Liu, Yu & Li, Qingping, 2014. "The status of natural gas hydrate research in China: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 778-791.
    2. Yu Zhang & Xiaosen Li & Yi Wang & Zhaoyang Chen & Gang Li, 2017. "Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations," Energies, MDPI, vol. 10(4), pages 1-13, April.
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    Cited by:

    1. Liangyu Zhu & Tao Zhou & Xijia Ding & Xuemeng Qin & Jialei Zhang, 2019. "Study on the Movement and Deposition of Particles in Supercritical Water Natural Circulation Based on Grey Correlation Theory," Energies, MDPI, vol. 12(12), pages 1-18, June.

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