Effects of particle and pore sizes on the formation behaviors of methane hydrate in porous silica gels

Li, Xiao-Sen; Chen, Zhaoyang; Li, Gang; Wang, Yi

doi:10.1016/j.jngse.2016.04.026

Cited by 33 publications

(25 citation statements)

References 26 publications

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“…Another possibility is the very slow solid body diffusion of methane through a gas hydrate layer that builds at the gas-water interface and will not allow measuring any further conversion on the timescale of lab experiments. [22]. It was found that the final conversion of water to hydrate increases with the increase of the pore size due to that the equilibrium hydrate formation pressure decreases with the increase of the pore size.…”

Section: Resultsmentioning

confidence: 99%

“…From Figure 3, it can be seen that the temperature in the crystallizer is much higher than Pressure and temperature changes with time for the experiments at various formation temperatures. [22]. It was found that the final conversion of water to hydrate increases with the increase of the pore size due to that the equilibrium hydrate formation pressure decreases with the increase of the pore size.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous work, the low conversion of water to hydrate was also found in silica gels with different pore diameters of 9.03, 12.95, 17.96 and 33.2 nm. The highest water conversion of 42.63% is obtained at the initial formation pressure of 9.4 MPa and the formation temperature of 276.15 K in the silica gels with the mean pore diameter of 33.2 nm [22]. It was found that the final conversion of water to hydrate increases with the increase of the pore size due to that the equilibrium hydrate formation pressure decreases with the increase of the pore size.…”

Section: Methodsmentioning

confidence: 92%

“…The details of the experimental apparatus have been reported in our previous work [22,23]. As shown in Figure 1, the experimental apparatus consists of the high-pressure hydrate crystallizer (CR), the supply vessel (SV), the gas/liquid supply system, the temperature-controlled water bath and the data acquisition system.…”

Section: Apparatusmentioning

confidence: 99%

“…Two pressure (P) transducers (MBS3000, Danfoss, Copenhagen, Denmark) are employed for pressure measurement, with a maximum certainty of 0.01% of the span (0-25 MPa). A Pt1000 thermoprobe (JM6081, JinMing, Tianjin, China) is used to measure the temperature in the crystallizer within a precision of ±0.05 K. The crystallizer temperature is controlled by a temperature-controlled water bath within a range of 263.15-303.15 K and with an uncertainty of 0.1 K. The signals of the pressure and the temperature are continuously monitored and recorded by a data acquisition system coupled with a computer [22,23]. …”

Section: Apparatusmentioning

confidence: 99%

See 4 more Smart Citations

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Wang

Chen

et al. 2017

Energies

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Abstract:The kinetics of methane hydrate formation in marine sediments with different water saturations are important to assess the feasibility of the hydrate production and understand the process of the secondary hydrate formation in the gas production from hydrate reservoir. In this paper, the behaviors of methane hydrate formation in marine sediments from the South China Sea at different water saturation levels were experimentally studied in isobaric conditions. The marine sediments used in the experiments have the mean pore diameter of 12.178 nm, total pore volume of 4.997 × 10 −2 mL/g and surface area of 16.412 m 2 /g. The volume fraction of water in the marine sediments ranges from 30% to 50%. The hydrate formation rate and the final water conversion increase with the decrease of the formation temperature at the water saturation of 40%. At the same experimental conditions, the hydrate formation rate decreases with the increase of the water saturation from 40% to 50% due to the reduction of the gas diffusion speed. At the water saturation of 30%, the hydrate formation rate is lower than that at the water saturation of 40% due to the effect of the equilibrium hydrate formation pressure, which increases with the decrease of the water saturation. The final water conversion is shown to increase with the increase of the water saturation, even the formation process at higher water did not end. The experiments at low water saturation show a better repeatability than that at high water saturation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 92%

Section: Apparatusmentioning

confidence: 99%

Section: Apparatusmentioning

confidence: 99%

See 3 more Smart Citations

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Wang

Chen

et al. 2017

Energies

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Experimental study of CO₂ hydrate formation in porous media with different particle sizes

Cai

Chen

et al. 2022

Can J Chem Eng

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To investigate the effect of the particle size of porous media on CO2 hydrate formation, the formation experiments of CO2 hydrate in porous media with three particle sizes were performed. Three kinds of porous media with mean particle diameters of 2.30 μm (clay level), 5.54 μm (silty sand level), and 229.90 μm (fine sand level) were used in the experiments. In the experiments, the formation temperature range was 277.15–281.15 K and the initial formation pressure range was 3.4–4.8 MPa. The final gas consumption increases with the increase in the initial pressure and the decrease in the formation temperature. The hydrate formation at the initial formation pressure of 4.8 MPa in 229.90 μm porous media is much slower than that at the lower formation pressure and displays multistage. In the experiments with different formation temperatures, the gas consumption rate at the temperature of 279.15 K is the lowest. In 2.30 and 5.54 μm porous media, the hydrate formation rates are similar and faster than those in 229.90 μm porous media. The particle size of the porous media does not affect the final gas consumption. The gas consumption rate per mol of water and the final water conversion increase with the decrease in the water content. The induction time in 5.54 μm porous media is longer than that in 2.30 and 229.90 μm porous media, and the presence of NaCl significantly increases the induction time and decreases the final conversion of water to hydrate.

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A comprehensive review of the influence of particle size and pore distribution on the kinetics of CO₂ hydrate formation in porous media

Zhang

Yuan

et al. 2023

Greenhouse Gases

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As an essential greenhouse gas, CO2 is the leading cause of global warming and environmental problems. An efficient strategy to lower CO2 emissions is the hydrate‐based method of CO2 geological storage. The stability and formation process of hydrate is the premise and foundation of the hydrate method of CO2 geological storage. However, the formation rule of CO2 hydrate has a significant impact on the formation characteristics of CO2 hydrate. This paper thoroughly examines the formation properties of CO2 hydrate in porous media systems. The quantitative impacts and laws of many parameters on the CO2 hydrate production process are thoroughly examined. On this basis, the internal mechanism of particle size, pore distribution, and critical size of particles in porous media systems on the kinetics of CO2 hydrate formation are detailed. Finally, the shortcomings of the studies on CO2 hydrate formation kinetics in porous media systems and the main directions in the future are pointed out. The influence of pore distribution in porous media on the CO2 hydrate formation process still needs further study. The relative results will be useful in the future for CO2 capture and sequestration in sediments. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Effects of particle and pore sizes on the formation behaviors of methane hydrate in porous silica gels

Cited by 33 publications

References 26 publications

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Experimental study of CO₂ hydrate formation in porous media with different particle sizes

A comprehensive review of the influence of particle size and pore distribution on the kinetics of CO₂ hydrate formation in porous media

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Effects of particle and pore sizes on the formation behaviors of methane hydrate in porous silica gels

Cited by 33 publications

References 26 publications

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Methane Hydrate Formation in Marine Sediment from South China Sea with Different Water Saturations

Experimental study of CO2 hydrate formation in porous media with different particle sizes

A comprehensive review of the influence of particle size and pore distribution on the kinetics of CO2 hydrate formation in porous media

Contact Info

Product

Resources

About

Experimental study of CO₂ hydrate formation in porous media with different particle sizes

A comprehensive review of the influence of particle size and pore distribution on the kinetics of CO₂ hydrate formation in porous media