Study on competitive adhesion of coal dust on water droplet

Zhu, Hongzheng; Pan, Gaochao; Zhu, Wenliang; Jiang, Bingyou; Wu, Niangang; Yuan, Liang

doi:10.1016/j.fuel.2022.125928

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…Ji et al 24 investigated the characteristics of the wettability of coal under different conditions by means of organic solvent extraction and verified that there is an obvious influence between microstructure and wettability behavior. Zhu et al 25 studied the difference in wetting behavior between graphite and montmorillonite based on the microscopic method and investigated the relationship between particles and wetting behavior. Cai et al 26 explained the macroscopic wetting matrix between coal and water based on low-field NMR methods and further summarized a variety of interpore wetting patterns.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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Preparation and molecular simulation of an environmentally friendly dust-fixing agent based on chitosan-gelatin

Wang,

Wei,

Liu

et al. 2023

Environ Sci Pollut Res

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Preparation of dopamine-modified sea squirt cellulose hydrogel dust-fixing agent to prevent raising of dust

Liu,

Wei,

et al. 2023

Environmental Research

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Study on competitive adhesion of coal dust on water droplet

Cited by 7 publications

References 36 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

Preparation and molecular simulation of an environmentally friendly dust-fixing agent based on chitosan-gelatin

Preparation of dopamine-modified sea squirt cellulose hydrogel dust-fixing agent to prevent raising of dust

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Study on competitive adhesion of coal dust on water droplet

Cited by 7 publications

References 36 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

Preparation and molecular simulation of an environmentally friendly dust-fixing agent based on chitosan-gelatin

Preparation of dopamine-modified sea squirt cellulose hydrogel dust-fixing agent to prevent raising of dust

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