Dissociation behavior of pellet shaped mixed gas hydrate samples that contain propane as a guest

Taro Kawamura, Yasuhide Sakamoto, Michika Ohtake, Yoshitaka Yamamoto, Takeshi Komai, Hironori Haneda, Ji Ho Yoon, Kotaro Ohga

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The dissociation kinetics of mixed gas hydrates that contain propane as a guest molecule have been investigated. The mixed gas hydrates used in this work were artificially prepared using the binary gas mixture of methane-propane and the ternary gas mixture of methane-ethane-propane. The crystal structures and the guest compositions of the mixed hydrates were clearly identified by using Raman spectroscopy and gas chromatography. The dissociation rates of the gas hydrates observed under several isothermal and isobaric conditions were discussed with an analytical model. The isobaric conditions were achieved by pressurizing with mixed gases using buffer cylinders, which had similar compositions to those of the initial gases used for synthesizing each hydrate sample. Interestingly, the calculated result agreed well with the experimentally observed results only when the composition of the vapor phase was assumed to be identical with that of the hydrate phase instead of the bulk (equilibrium) gas composition.

Original languageEnglish
Pages (from-to)2491-2498
Number of pages8
JournalEnergy Conversion and Management
Volume47
Issue number15-16
DOIs
Publication statusPublished - 2006 Sep 1
Externally publishedYes

Keywords

  • Dissociation
  • Hydrate
  • Kinetics
  • Natural gas

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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