Research on coal dust pollution prevention and control based on co-solvent association: Macro-micro experiments and molecular dynamics simulations

Tian, Qifan; Nie, Wen; Bao, Qiu; Niu, Wenjin; Li, Ruoxi; Zhang, Xiaohan; Ilele, Felicie Mwabama; Akanyange, Stephen Nyabire

doi:10.1016/j.apsusc.2024.159289

Cited by 14 publications

(1 citation statement)

References 39 publications

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“…Furthermore, the 13 C NMR results of the coal samples, combined with our previous work and research findings by Zhang et al. and Tian et al, , provide classified information about the carbon atomic structures of the experimental coal samples for the subsequent construction of coal molecular structures (Table ).…”

Section: Experimental Results and Analysismentioning

confidence: 66%

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection

Liu,

Zha,

Lin

et al. 2024

Energy Fuels

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This study aims to explore changes in the microstructure and wettability of water-containing coal after hot flue gas (CO 2 −N 2 ) injection. To achieve this aim, thermal modification was conducted on Wulan anthracite with the aid of an experimental platform for coal modification by hot flue gas injection, and changes in the microscopic characteristics before and after the modification were investigated by means of Fouriertransform infrared spectroscopy (FT-IR) and carbon-13 nuclear magnetic resonance ( 13 C NMR). The results demonstrate that affected by acidic and hydrothermal environments, some oxygencontaining functional groups and aliphatic side chains in the molecular structure become detached. To be specific, the coefficient of oxygen-containing functional groups I O declines by 19.3%, and the aliphatic carbon content f al decreases by 32.7%. With the obtained microscopic data, the coal macromolecular structure models before and after the modification were established and verified by inverting the 13 C NMR spectra, and the coal matrix models with a projection area of 100 nm 2 were also generated. Subsequently, the wetting behavior of a water cluster on the coal matrix model was simulated by a molecular dynamics method. Based on the simulation results, a method of characterizing the microscopic wettability according to the maximum spreading area H and the maximum height D was put forward. The results are pretty consistent with the experimentally measured wettability. These results can lay a foundation for researching the microscopic control mechanism of water-containing coal seam modification by hot flue gas injection.

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Section: Experimental Results and Analysismentioning

confidence: 66%

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection

Liu,

Zha,

Lin

et al. 2024

Energy Fuels

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The investigation of wetting and agglomerating mechanism of short-chain fluorocarbon surfactant suppressing coal dust from macro and molecular scales

Ding,

Wang,

Luo

et al. 2024

Chemical Engineering Journal

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Preparation and characterization of a low viscosity spray dust suppressant based on xanthan gum grafted sodium α-olefin sulfonate copolymer with proactive coal-adhesive and surface-active properties

Li,

Nie,

Bao

et al. 2024

Chemical Engineering Journal

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Research on coal dust pollution prevention and control based on co-solvent association: Macro-micro experiments and molecular dynamics simulations

Cited by 14 publications

References 39 publications

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection

The investigation of wetting and agglomerating mechanism of short-chain fluorocarbon surfactant suppressing coal dust from macro and molecular scales

Preparation and characterization of a low viscosity spray dust suppressant based on xanthan gum grafted sodium α-olefin sulfonate copolymer with proactive coal-adhesive and surface-active properties

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Research on coal dust pollution prevention and control based on co-solvent association: Macro-micro experiments and molecular dynamics simulations

Cited by 14 publications

References 39 publications

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO2–N2) Injection

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO2–N2) Injection

The investigation of wetting and agglomerating mechanism of short-chain fluorocarbon surfactant suppressing coal dust from macro and molecular scales

Preparation and characterization of a low viscosity spray dust suppressant based on xanthan gum grafted sodium α-olefin sulfonate copolymer with proactive coal-adhesive and surface-active properties

Contact Info

Product

Resources

About

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection

Changes in the Microstructure and Wettability of Water-Containing Coal after Hot Flue Gas (CO₂–N₂) Injection