Kinetics of the formation and dissociation of gas hydrates from CO2-CH4 mixtures

Kristine Horvat; Prasad Kerkar; Keith Jones; Devinder Mahajan

doi:10.3390/en5072248

Kinetics of the formation and dissociation of gas hydrates from CO₂-CH₄ mixtures

Kristine Horvat
, Prasad Kerkar
, Keith Jones
, Devinder Mahajan

Materials Science and Engineering

Stony Brook University

Stony Brook University

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Sequestration of carbon dioxide (CO₂) in the form of its hydrates in natural methane (CH₄) hydrate reservoirs, via CO₂/CH₄ exchange, is an attractive pathway that also yields valuable CH₄ gas as product. In this paper, we describe a macroscale experiment to form CO₂ and CH₄-CO₂ hydrates, under seafloor-mimic conditions, in a vessel fitted with glass windows that provides visualization of hydrates throughout formation and dissociation processes. Time resolved pressure and temperature data as well as images of hydrates are presented. Quantitative gas conversions with pure CO₂, calculated from gas chromatographic measurements yielded values that range from 23-59% that correspond to the extent of formed hydrates. In CH₄-rich CH₄-CO₂ mixed gas systems, CH₄ hydrates were found to form preferentially.

Original language	English
Pages (from-to)	2248-2262
Number of pages	15
Journal	Energies
Volume	5
Issue number	7
DOIs	https://doi.org/10.3390/en5072248
State	Published - Jul 2012

Keywords

Carbon dioxide hydrate
Carbon sequestration
Methane hydrate
Mixed gas hydrate
Sodium dodecyl sulfate

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10.3390/en5072248

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title = "Kinetics of the formation and dissociation of gas hydrates from CO2-CH4 mixtures",

abstract = "Sequestration of carbon dioxide (CO2) in the form of its hydrates in natural methane (CH4) hydrate reservoirs, via CO2/CH4 exchange, is an attractive pathway that also yields valuable CH4 gas as product. In this paper, we describe a macroscale experiment to form CO2 and CH4-CO2 hydrates, under seafloor-mimic conditions, in a vessel fitted with glass windows that provides visualization of hydrates throughout formation and dissociation processes. Time resolved pressure and temperature data as well as images of hydrates are presented. Quantitative gas conversions with pure CO2, calculated from gas chromatographic measurements yielded values that range from 23-59\% that correspond to the extent of formed hydrates. In CH4-rich CH4-CO2 mixed gas systems, CH4 hydrates were found to form preferentially.",

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T1 - Kinetics of the formation and dissociation of gas hydrates from CO2-CH4 mixtures

AU - Horvat, Kristine

AU - Kerkar, Prasad

AU - Jones, Keith

AU - Mahajan, Devinder

PY - 2012/7

Y1 - 2012/7

N2 - Sequestration of carbon dioxide (CO2) in the form of its hydrates in natural methane (CH4) hydrate reservoirs, via CO2/CH4 exchange, is an attractive pathway that also yields valuable CH4 gas as product. In this paper, we describe a macroscale experiment to form CO2 and CH4-CO2 hydrates, under seafloor-mimic conditions, in a vessel fitted with glass windows that provides visualization of hydrates throughout formation and dissociation processes. Time resolved pressure and temperature data as well as images of hydrates are presented. Quantitative gas conversions with pure CO2, calculated from gas chromatographic measurements yielded values that range from 23-59% that correspond to the extent of formed hydrates. In CH4-rich CH4-CO2 mixed gas systems, CH4 hydrates were found to form preferentially.

AB - Sequestration of carbon dioxide (CO2) in the form of its hydrates in natural methane (CH4) hydrate reservoirs, via CO2/CH4 exchange, is an attractive pathway that also yields valuable CH4 gas as product. In this paper, we describe a macroscale experiment to form CO2 and CH4-CO2 hydrates, under seafloor-mimic conditions, in a vessel fitted with glass windows that provides visualization of hydrates throughout formation and dissociation processes. Time resolved pressure and temperature data as well as images of hydrates are presented. Quantitative gas conversions with pure CO2, calculated from gas chromatographic measurements yielded values that range from 23-59% that correspond to the extent of formed hydrates. In CH4-rich CH4-CO2 mixed gas systems, CH4 hydrates were found to form preferentially.

KW - Carbon dioxide hydrate

KW - Carbon sequestration

KW - Methane hydrate

KW - Mixed gas hydrate

KW - Sodium dodecyl sulfate

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U2 - 10.3390/en5072248

DO - 10.3390/en5072248

M3 - Article

SN - 1996-1073

VL - 5

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EP - 2262

JO - Energies

JF - Energies

IS - 7

ER -

Kinetics of the formation and dissociation of gas hydrates from CO₂-CH₄ mixtures

Abstract

Keywords

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