Enhanced methane hydrate formation in the highly dispersed carbon nanotubes-based nanofluid

Song, Yuanmei; Liang, Ruquan; Wang, Fei; Zhang, Dan-Hui; Yang, Liu; Zhang, Dengbo

doi:10.1016/j.fuel.2020.119234

Cited by 29 publications

(19 citation statements)

References 38 publications

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“…According to the available research reported in the literature, the nanofluids prepared from Cu or Ag − metal nanoparticles can significantly improve the kinetics of hydrate formation, shorten the induction time, and increase gas consumption. It is also found that the induction time is decreased with the increase of nanoparticle concentration. − This is mainly due to the high thermal conductivity of Cu and Ag which makes nanofluids have excellent heat and mass transfer properties. Some nanofluids prepared from metal oxides can also enhance the kinetics of hydrate formation and thus improve the CO 2 separation efficiency from a CO 2 /CH 4 gas mixture.…”

Section: Advances In the Kinetics Of Hydrate-based Co2 Capture From C...mentioning

confidence: 99%

Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook

Xie

et al. 2022

Energy Fuels

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Hydrate-based gas separation is a promising method for CO2 capture from CO2/CH4 gas mixtures, and with improved gas separation efficiency, rate of hydrate formation, and gas uptake, this process has the potential to be taken from the lab scale to industry. In this regard, a significant body of work has been conducted in recent years with the aim to enhance the kinetics of the hydrate-based CO2 capture process. The present study presents a review of the kinetic studies performed on the enhancement of hydrate-based CO2 capture from CO2/CH4 in terms of using additives, porous media, nanofluids, etc. Future research directions are also discussed. The present review aims to aid understanding of the mechanism of the hydrate-based CO2 capture process and to provide references for the development of hydrate-based CO2 capture technology toward industrial applications in the near future.

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Section: Advances In the Kinetics Of Hydrate-based Co2 Capture From C...mentioning

confidence: 99%

Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook

Xie

et al. 2022

Energy Fuels

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“…On the one hand, a hydrate of methane is produced and stored under milder conditions (e.g., it is formed at 275.15 K, 3.2 MPa and stored at a temperature of −150 • C in the normal atmosphere), whereas compressed natural gas requires a high pressure (20 MPa), and liquefied natural gas requires a low temperature (−160 • C) [130]. On the other hand, hydrate dissociation is a rather slow process that also requires heat, which helps to reduce the risk of gas explosion or leaks [131].…”

Section: Exploration Extraction and Transportationmentioning

confidence: 99%

Key Areas of Gas Hydrates Study: Review

2022

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Gas hydrates are widespread all over the world. They feature high energy density and are a clean energy source of great potential. The paper considers experimental and theoretical studies on gas hydrates in the following key areas: formation and dissociation, extraction and transportation technologies of natural methane hydrates, and ignition, and combustion. We identified a lack of research in more areas and defined prospects of further development of gas hydrates as a promising strategic resource. One of the immediate problems is that there are no research findings for the effect of sediments and their matrices on hydrate saturation, as well as on gas hydrate formation and dissociation rates. No mathematical models describe the dissociation of gas hydrates under various conditions. There is a lack of research into the renewal and improvement of existing technologies for the easier and cheaper production of gas hydrates and the extraction of natural gas from them. There are no models of gas hydrate ignition taking into account dissociation processes and the self-preservation effect.

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“…Without micro/nanofluids, intermolecular interactions are stronger than those between gas and water molecules. Furthermore, the presence of SDS reduces surface tension at the gas-liquid interface, promotes methane gas dissolution, increases the driving force for hydrate formation, improves mass transfer conditions, accelerates hydrate formation, and increases the hydrate nucleation rate (Liu Z et al, 2021;Song et al, 2021).…”

Section: Figurementioning

confidence: 99%

“…The high thermal conductivity and phase-change properties of NMG can rapidly dissipate heat from the hydration reaction, thus accelerating the solution velocity and formation rate. The micro/nanoparticles undergo continuous Brownian motion, which can regenerate the gas-liquid interface and expand the gas-liquid contact area, allowing methane to diffuse more easily (Song et al, 2021). Under the influence of an external magnetic field, these activities can create a good stirring effect.…”

Section: Gas Consumptionmentioning

confidence: 99%

“…Nanofluids have unique mass and heat transfer properties, such as high specific surface area (Zhou, 2016), active Brownian motion (Cui et al, 2017), small size (Su et al, 2008;Xia et al, 2016), and controlled concentration (Pahlavanzadeh et al, 2016;Liu et al, 2017), that are expected to rapidly enhance the heat and mass transfer processes of gas hydration. Song et al (Song et al, 2021) used carbon nanotubes (CNTs) as carriers and covalently grafted the functional -SO 3group (like the hydrophilic group in SDS) onto the surface of the nanocarriers; the SCNT nanofluid's methane storage reached 142 v/v in methane hydrate formation. Wu et al (2021) produced Fe 3 O 4 nanoparticles and surface modified them with sodium oleate (SO) and SDS bilayers, the composite-promoted system demonstrated a significant increase in methane storage capacity and hydrate formation rate.…”

Section: Introductionmentioning

confidence: 99%

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Synergistic enhancement of coalbed methane hydration process by magnetic field and NiMnGa micro-nano fluid

Lin

et al. 2022

Front. Energy Res.

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Coalbed methane is an important renewable energy source. Gas hydration technology is a new method for enhancing the utilization of coalbed methane and reducing environmental pollution. Long induction periods, sluggish formation rates, low hydrate yields, and difficulty removing heat during hydrate formation are all issues with gas hydration technology. In this paper, 3 wt% NiMnGa (NMG) phase-change micro/nanoparticles and 0.05% sodium dodecyl sulphate (SDS) were compounded, and gas hydration experiments were conducted under various initial pressures and gas sample conditions to investigate. The findings revealed that NMG has efficient mass transfer properties as well as phase-change heat absorption properties, which significantly improved the kinetic process of the gas hydrate by mass and heat transfer, shortened the induction time, increased gas consumption, and increased the gas consumption rate during the rapid hydrate growth period. When the initial pressure was 6.2 MPa, the induction time was reduced by 89.26%, 92.48%, and 95.64%, and the maximum gas consumption rate was increased by 238.18%, 175.55%, and 113.60%, respectively, when using different concentrations of methane in the NMG-SDS system compared to the pure SDS system. The NMG used in this paper showed potential for future use in mixed gas hydration technology.

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Enhanced methane hydrate formation in the highly dispersed carbon nanotubes-based nanofluid

Cited by 29 publications

References 38 publications

Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook

Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook

Key Areas of Gas Hydrates Study: Review

Synergistic enhancement of coalbed methane hydration process by magnetic field and NiMnGa micro-nano fluid

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Enhanced methane hydrate formation in the highly dispersed carbon nanotubes-based nanofluid

Cited by 29 publications

References 38 publications

Minireview of Hydrate-Based CO2 Separation from a CO2/CH4 Gas Mixture: Progress and Outlook

Minireview of Hydrate-Based CO2 Separation from a CO2/CH4 Gas Mixture: Progress and Outlook

Key Areas of Gas Hydrates Study: Review

Synergistic enhancement of coalbed methane hydration process by magnetic field and NiMnGa micro-nano fluid

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Product

Resources

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Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook

Minireview of Hydrate-Based CO₂ Separation from a CO₂/CH₄ Gas Mixture: Progress and Outlook