Effect of heat transfer on the kinetics of methane hydrate dissociation

Misyura, S.Y.

doi:10.1016/j.cplett.2013.08.010

Cited by 59 publications

(32 citation statements)

References 18 publications

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“…Apart from hot water injection and water bath methods, methane hydrate dissociation kinetics have also been investigated under a range of heat fluxes from 255 to 13,700 W/m 2 [106]. While experimental methodology differed significantly from previous investigations into the thermal method, a general conclusion was that increasing heat flux leads to an increase in dissociation rate and at high heat fluxes, the phenomenon of ''self-preservation'' could be avoided.…”

Section: Thermal Stimulation By Immersionmentioning

confidence: 98%

“…The techniques of heat delivery include the changing of environment temperature (water/air bath heating) [102][103][104][105], injection of hot fluid into the hydrate sample [101], supplying heat via point sources [107] and combustion of in situ methane [106,108]. While water/air bath heating is a technique that work in the laboratory setting, it will not be feasible for use in the field.…”

Section: Thermal Stimulation By Immersionmentioning

confidence: 99%

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Review of natural gas hydrates as an energy resource: Prospects and challenges

et al. 2016

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Section: Thermal Stimulation By Immersionmentioning

confidence: 98%

Section: Thermal Stimulation By Immersionmentioning

confidence: 99%

Review of natural gas hydrates as an energy resource: Prospects and challenges

et al. 2016

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“…A series of macroscopic investigations of hydrate dissociation kinetics have been performed in recent decades46474849. Some abnormal phenomena were observed in these studies, i.e.…”

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confidence: 99%

Self-preservation and structural transition of gas hydrates during dissociation below the ice point: an in situ study using Raman spectroscopy

Zhong

Zeng

Zhou

et al. 2016

Sci Rep

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The hydrate structure type and dissociation behavior for pure methane and methane-ethane hydrates at temperatures below the ice point and atmospheric pressure were investigated using in situ Raman spectroscopic analysis. The self-preservation effect of sI methane hydrate is significant at lower temperatures (268.15 to 270.15 K), as determined by the stable C-H region Raman peaks and AL/AS value (Ratio of total peak area corresponding to occupancies of guest molecules in large cavities to small cavities) being around 3.0. However, it was reduced at higher temperatures (271.15 K and 272.15 K), as shown from the dramatic change in Raman spectra and fluctuations in AL/AS values. The self-preservation effect for methane-ethane double hydrate is observed at temperatures lower than 271.15 K. The structure transition from sI to sII occurred during the methane-ethane hydrate decomposition process, which was clearly identified by the shift in peak positions and the change in relative peak intensities at temperatures from 269.15 K to 271.15 K. Further investigation shows that the selectivity for self-preservation of methane over ethane leads to the structure transition; this kind of selectivity increases with decreasing temperature. This work provides new insight into the kinetic behavior of hydrate dissociation below the ice point.

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“…The computation of heat transfer at condensation or evaporation of liquid films is the example of these processes [1][2][3][4][5][6][7]. There is a nonequilibrium region in the vicinity of the interface due to the small mean free path of vapour molecules.…”

Section: Introductionmentioning

confidence: 99%

Experimental Observation of the Temperature at the Liquid/Gas Interface

et al. 2016

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Abstract. Experimental studies on measurements of the temperature profile in the vicinity of the evaporating distilled water layer were carried out. The temperature was measured with a chromel-alumel thermocouple, when it moves under the action of the precision actuator directed perpendicular to the evaporating layer. According to the experimental results the fluctuation in temperature of the air and liquid was found in the immediate vicinity of the liquid/gas interface. However, temperature jumps near the interface was not observed.

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Effect of heat transfer on the kinetics of methane hydrate dissociation

Cited by 59 publications

References 18 publications

Review of natural gas hydrates as an energy resource: Prospects and challenges

Review of natural gas hydrates as an energy resource: Prospects and challenges

Self-preservation and structural transition of gas hydrates during dissociation below the ice point: an in situ study using Raman spectroscopy

Experimental Observation of the Temperature at the Liquid/Gas Interface

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