Flue gas injection into gas hydrate reservoirs for methane recovery and carbon dioxide sequestration

Jinhai Yang, Anthony Chizoba Okwananke, Bahman Tohidi Kalorazi, Evgeny Chuvilin, Kirill Maerle, Vladimir Istomin, Boris Bukhanov, Alexey Cheremisin

Research output: Contribution to journalArticle

46 Citations (Scopus)
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Abstract

Flue gas injection into methane hydrate-bearing sediments was experimentally investigated to explore the potential both for methane recovery from gas hydrate reservoirs and for direct capture and sequestration of carbon dioxide from flue gas as carbon dioxide hydrate. A simulated flue gas from coal-fired power plants composed of 14.6 mole% carbon dioxide and 85.4 mole% nitrogen was injected into a silica sand pack containing different saturations of methane hydrate. The experiments were conducted at typical gas hydrate reservoir conditions from 273.3 to 284.2 K and from 4.2 to 13.8 MPa. Results of the experiments show that injection of the flue gas leads to significant dissociation of the methane hydrate by shifting the methane hydrate stability zone, resulting in around 50 mole% methane in the vapour phase at the experimental conditions. Further depressurisation of the system to pressures well above the methane hydrate dissociation pressure generated methane-rich gas mixtures with up to 80 mole% methane. Meanwhile, carbon dioxide hydrate and carbon dioxide -mixed hydrates were formed while the methane hydrate was dissociating. Up to 70% of the carbon dioxide in the flue gas was converted into hydrates and retained in the silica sand pack.
Original languageEnglish
Pages (from-to)431-438
Number of pages8
JournalEnergy Conversion and Management
Volume136
Early online date21 Jan 2017
DOIs
Publication statusPublished - 15 Mar 2017

Keywords

  • Hydrate
  • Methane
  • Carbon dioxide
  • Flue gas
  • Methane recovery
  • Carbon dioxide sequestration

ASJC Scopus subject areas

  • Energy(all)
  • Environmental Science(all)

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