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Usage of a Binary CO 2 /C 3 H 8 (85/15 vol%) Mixture for Hydrate Production: The Role of the Memory Effect and Phase Boundary Conditions of the System

Author

Listed:
  • Alberto Maria Gambelli

    (Civil and Environmental Engineering Department, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy)

  • Federico Rossi

    (Engineering Department, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy)

  • Giovanni Gigliotti

    (Civil and Environmental Engineering Department, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy)

Abstract

Since it was proposed, the replacement process, in natural gas hydrate reservoirs, has been considered as one of the most promising options to obtain an alternative and potentially carbon-neutral energy source. However, such a process shows high complexity, and its maximum efficiency cannot exceed 75% if carried out with pure carbon dioxide. The addition of minor quantities of other guest species in mixture with carbon dioxide allows higher efficiencies to be reached. This study deepens the production of hydrates with a binary mixture containing carbon dioxide and propane, with corresponding concentrations equal to 85/15 vol%. Several experiments were carried out consecutively and with the same gas–water mixture in order to ensure the system retains memory of previous formations. The results were then discussed in terms of the quantity of hydrates produced and the evolution of the formation process as a function of time. The data collected during the dissociation of hydrates were finally used to define the phase boundary of the system.

Suggested Citation

  • Alberto Maria Gambelli & Federico Rossi & Giovanni Gigliotti, 2025. "Usage of a Binary CO 2 /C 3 H 8 (85/15 vol%) Mixture for Hydrate Production: The Role of the Memory Effect and Phase Boundary Conditions of the System," Energies, MDPI, vol. 18(6), pages 1-20, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:6:p:1522-:d:1615733
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    References listed on IDEAS

    as
    1. Federico Rossi & Yan Li & Alberto Maria Gambelli, 2021. "Thermodynamic and Kinetic Description of the Main Effects Related to the Memory Effect during Carbon Dioxide Hydrates Formation in a Confined Environment," Sustainability, MDPI, vol. 13(24), pages 1-21, December.
    2. E. Dendy Sloan, 2003. "Fundamental principles and applications of natural gas hydrates," Nature, Nature, vol. 426(6964), pages 353-359, November.
    3. Jing-Chun Feng & Gang Li & Xiao-Sen Li & Bo Li & Zhao-Yang Chen, 2013. "Evolution of Hydrate Dissociation by Warm Brine Stimulation Combined Depressurization in the South China Sea," Energies, MDPI, vol. 6(10), pages 1-24, October.
    4. Yan Li & Alberto Maria Gambelli & Federico Rossi, 2022. "Experimental Study on the Effect of SDS and Micron Copper Particles Mixture on Carbon Dioxide Hydrates Formation," Energies, MDPI, vol. 15(18), pages 1-16, September.
    5. Wan, Qing-Cui & Si, Hu & Li, Bo & Yin, Zhen-Yuan & Gao, Qiang & Liu, Shu & Han, Xiao & Chen, Ling-Ling, 2020. "Energy recovery enhancement from gas hydrate based on the optimization of thermal stimulation modes and depressurization," Applied Energy, Elsevier, vol. 278(C).
    6. Li, Xiao-Sen & Xu, Chun-Gang & Zhang, Yu & Ruan, Xu-Ke & Li, Gang & Wang, Yi, 2016. "Investigation into gas production from natural gas hydrate: A review," Applied Energy, Elsevier, vol. 172(C), pages 286-322.
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