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Kinetic study of CO2 hydrate formation based on heat transfer measurement.

Number: 1961

Author(s) : OSSWALD V., CLAIN P., DALMAZZONE D., FOURNAISON L.

Summary

Carbon dioxyde hydrates are ice-like crystalline solids composed of CO2 molecules trapped inside cages of hydrogen-bonded water molecules. CO2 hydrates slurries can be used as phase change material for industrial issues of cold distribution, due to high dissociation enthalpy of CO2 hydrate (around 374 kJ kg-1, higher than that of ice – 333 kJ kg-1). However, formation rate of CO2 hydrate is a real limitation, and the way to control and promote it is a key parameter. The present work investigates kinetics studies of CO2 hydrate crystallization for various pressure and stirring rate conditions in a stirred batch jacketed reactor. A heat transfer measurement method is used to determine the rate of hydrate formation. In a first time, the method has been validated by evaluating ice crystallization then it was applied to CO2 hydrates crystallization. Finally, an empirical model have been tested for describing the experimental results and compare to other kinetics determination.

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Pages: 7

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Details

  • Original title: Kinetic study of CO2 hydrate formation based on heat transfer measurement.
  • Record ID : 30028857
  • Languages: English
  • Subject: Technology
  • Source: 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
  • Publication date: 2021/09/01
  • DOI: http://dx.doi.org/10.18462/iir.PCM.2021.1961
  • Document available for consultation in the library of the IIR headquarters only.

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