Phase equilibrium calculation for clathrate hydrates based on a statistical thermodynamics model

An attempt to optimize the kihara parameters for methane and ethane

Emi Sato, Tatsuya Miyoshi, Ryo Ohmura, Kenji Yasuoka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An attempt was made to determine new Kihara parameters for methane and ethane with which the phase equilibrium pressure-temperature conditions for the simple methane and ethane hydrates can be accurately calculated based on the van der Waals-Platteeuw theory. The predictions with these new parameters were compared with those due to the other hydrate phase equilibrium prediction programs and the previously reported Kihara parameters as well as with the experimental values to examine the utility of the parameters. The results indicated that the phase equilibria for the simple methane and ethane hydrates are well reproduced with the new parameters determined in the present study, whereas the phase equilibria for the methane + ethane and methane + propane double hydrates were not well reproduced with the new parameters.

Original languageEnglish
Pages (from-to)5944-5950
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue number9 A
DOIs
Publication statusPublished - 2007 Sep 7

Fingerprint

Statistical mechanics
clathrates
Ethane
Hydrates
Phase equilibria
hydrates
ethane
Methane
methane
thermodynamics
Propane
predictions
propane
Temperature

Keywords

  • Clathrate hydrates
  • Gas hydrates
  • Methane hydrate
  • Phase equilibrium
  • Statistical thermodynamics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Phase equilibrium calculation for clathrate hydrates based on a statistical thermodynamics model: An attempt to optimize the kihara parameters for methane and ethane",
abstract = "An attempt was made to determine new Kihara parameters for methane and ethane with which the phase equilibrium pressure-temperature conditions for the simple methane and ethane hydrates can be accurately calculated based on the van der Waals-Platteeuw theory. The predictions with these new parameters were compared with those due to the other hydrate phase equilibrium prediction programs and the previously reported Kihara parameters as well as with the experimental values to examine the utility of the parameters. The results indicated that the phase equilibria for the simple methane and ethane hydrates are well reproduced with the new parameters determined in the present study, whereas the phase equilibria for the methane + ethane and methane + propane double hydrates were not well reproduced with the new parameters.",
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author = "Emi Sato and Tatsuya Miyoshi and Ryo Ohmura and Kenji Yasuoka",
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T2 - An attempt to optimize the kihara parameters for methane and ethane

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AU - Miyoshi, Tatsuya

AU - Ohmura, Ryo

AU - Yasuoka, Kenji

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N2 - An attempt was made to determine new Kihara parameters for methane and ethane with which the phase equilibrium pressure-temperature conditions for the simple methane and ethane hydrates can be accurately calculated based on the van der Waals-Platteeuw theory. The predictions with these new parameters were compared with those due to the other hydrate phase equilibrium prediction programs and the previously reported Kihara parameters as well as with the experimental values to examine the utility of the parameters. The results indicated that the phase equilibria for the simple methane and ethane hydrates are well reproduced with the new parameters determined in the present study, whereas the phase equilibria for the methane + ethane and methane + propane double hydrates were not well reproduced with the new parameters.

AB - An attempt was made to determine new Kihara parameters for methane and ethane with which the phase equilibrium pressure-temperature conditions for the simple methane and ethane hydrates can be accurately calculated based on the van der Waals-Platteeuw theory. The predictions with these new parameters were compared with those due to the other hydrate phase equilibrium prediction programs and the previously reported Kihara parameters as well as with the experimental values to examine the utility of the parameters. The results indicated that the phase equilibria for the simple methane and ethane hydrates are well reproduced with the new parameters determined in the present study, whereas the phase equilibria for the methane + ethane and methane + propane double hydrates were not well reproduced with the new parameters.

KW - Clathrate hydrates

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KW - Methane hydrate

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