The formation of carbon dioxide hydrate from water sorbed by coals

Смирнов, В. Г.; Manakov, Andrey Yu.; Дырдин, В. В.; Ismagilov, Z. R.; Михайлова, Екатерина Станиславовна; Rodionova, T. V.; Villevald, Galina V.; Malysheva, V. Yu.

doi:10.1016/j.fuel.2018.04.131

Cited by 32 publications

(13 citation statements)

References 37 publications

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“…In this connection, is it necessary to measure the hydrate capacity, that is, the maximal amount of the hydrate embedded in natural coal of one or another rank. The maximal amount of the hydrate is determined by the volume of coal pores with gas and water, sorbed by coal [14][15][16][17][18].…”

Section: Resultsmentioning

confidence: 99%

“…We carried out experiments with a series of coal samples in which we measured the amount of methane evolved during the decomposition of gas hydrates formed in these samples at a temperature and pressure close to the temperature and pressure in real coal beds [12,13,17,18]. Experiments were carried out in a closed autoclave, the amount of evolved gas was calculated from pressure rise.…”

Section: Resultsmentioning

confidence: 99%

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Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

et al. 2019

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A substantial fraction of methane in undisturbed coal beds is present in the condensed latent state, so that methane evolution from coal may be not always quantitatively predicted reliably. On the basis of experimental data, an equation expressing the amount of gas hydrate through the sorption capacity and actual humidity of coal is obtained. Analysis showed that the gradient of gas pressure in the marginal zone of a coal bed is linearly dependent on the saturation of the pore space with the hydrate. The high gradient of gas pressure and high gas content of coal beds along with local disruption of coal and re-distribution of rock pressure are the major factors causing instantaneous outbursts of coal and gas.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

et al. 2019

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“…But recently the possibility of the hydrate formation from bound water in natural Fig. 1 Thermobaric conditions for some Russian coal basins in comparison with phase boundaries of hydrates of methane and its mixture with other gases (Smirnov 2014) coals was confirmed by experiments (Bustin et al 2015;Smirnov et al 2016Smirnov et al , 2018Smirnov et al , 2020Turakhanov et al 2020).…”

Section: Introductionmentioning

confidence: 93%

Temperature Dependencies of Compressional Wave Velocity and Attenuation in Hydrate-Bearing Coal Samples

2021

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Gas hydrates are widespread in nature. Hydrate-bearing sands are well studied due to their high permeability and potential as a new resource of natural gas. Other hydrate-bearing deposits are studied less, in spite of the fact that earlier it was hypothesized the possible presence of gas hydrates in coal. But the possibility of the formation of gas hydrate from bound water in coal was confirmed in experiments recently. This work considers the results of a series of experiments to study the acoustic properties of coal samples containing methane hydrate. As a result, the temperature dependence of compressional wave velocity and attenuation was revealed.

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“…Pure CO 2 hydrate belongs to structure I due to the small CO 2 molecule diameter of 5.12 Å . If all the cavities were filled, 1 m 3 of CO 2 SI hydrate could contain approximately 180 m 3 of CO 2 gas at standard state . This is one of the reasons that hydrate technology is feasible in CO 2 capture, separation and transportation .…”

Section: Carbon Dioxide Hydratementioning

confidence: 99%

High‐efficiency CO₂ capture and separation based on hydrate technology: A review

Wang

Bao

2019

Greenhouse Gases

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As a result of growing concerns about global warming, hydrate‐based processing is becoming a promising technology for CO2 capture. This process captures CO2 by forming clathrate hydrates by exposing flue gas to water under suitable conditions. It results in high CO2 recovery due to its large gas‐storage capacity and the large concentration differences between the separation phases. However, the high cost of hydrate formation conditions is the main reason preventing this technology from wide industrial application. To address this issue, this paper explores the literature on the current status of developments in hydrate‐based CO2 capture and separation, focusing on methods to mitigate hydrate formation conditions and to improve phase‐contacting performance. In this review, various relevant aspects of CO2 capture and separation selectivity are summarized, including promoter selection, thermodynamic and kinetic model development, reactor configuration, and process design. Advantages and disadvantages of alternative processes are also discussed. Current studies are limited to laboratory experiments but low energy penalties and high CO2 selectivity features of hydrate processes will make future plant implementation feasible. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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The formation of carbon dioxide hydrate from water sorbed by coals

Cited by 32 publications

References 37 publications

Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

Temperature Dependencies of Compressional Wave Velocity and Attenuation in Hydrate-Bearing Coal Samples

High‐efficiency CO₂ capture and separation based on hydrate technology: A review

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The formation of carbon dioxide hydrate from water sorbed by coals

Cited by 32 publications

References 37 publications

Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger

Temperature Dependencies of Compressional Wave Velocity and Attenuation in Hydrate-Bearing Coal Samples

High‐efficiency CO2 capture and separation based on hydrate technology: A review

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Product

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High‐efficiency CO₂ capture and separation based on hydrate technology: A review