ArticleACS omega2023
Effect of Desorption Damage on the Kinetic Characteristics of Coal Particle Gas Desorption.
Article in ACS omega, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed.
- Gas Desorption Characteristics of Ultrafine Coal Particles and Their Influence on Gas Content Determination.ACS omega · 2026Article
- Study on coal pulverization characteristics and gas desorption mechanism based on impact crushing experiment.Heliyon · 2024Article
- Determination of Effective Radius under the Condition of Nonuniform Gas Occurrence and Borehole Plastic Failure.ACS omega · 2024Article
- Influence of magma intrusion on coal geochemical characteristics: a case study of Tiefa Daxing coal mine.Scientific reports · 2024Article
- Article
- Characterization of Coal Particle Methane Desorption and Optimization of Desorption Model Based on Desorption Damage.ACS omega · 2024Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is a positive feedback mechanism of desorption, pulverization, and redesorption in the process of coal and gas outburst. The coal pore structure changes to some extent in the process of coal pulverization and has a related impact on the dynamic parameters of coal particle gas desorption. To understand the impact of desorption damage on the dynamic characteristics of coal particle gas desorption, in this paper, a self-developed coal particle gas desorption test device is used to measure the amount of methane desorption of different coal samples repeatedly desorbed under the same adsorption equilibrium pressure. The results show that the methane desorption kinetic curves of the four coal samples based on desorption damage basically have the same trend. Nie's diffusion model can better describe the methane desorption characteristics of coal particles. After desorption, the methane desorption amount, initial desorption velocity, diffusion ability, and ultimate amount of methane desorption of the coal samples are greater than those before desorption. The desorption damage affects the relevant dynamic parameters of the coal particle gas diffusion model, and its impact on the outburst coal is greater than that on raw coal. In addition, the pore size distribution and change characteristics of the coal samples before and after desorption are analyzed quantitatively via a low-temperature liquid nitrogen adsorption test and fractal dimension-related theory. It was found that the pore volume peak area of the coal samples affected by desorption damage within each pore size range was significantly larger than that before desorption. Among them, micropores have the most significant impact on the desorption damage of coal samples, and the peak area of the pore volume of protruding coal is greater than that of raw coal, indicating that the internal pores of coal after desorption damage are more developed than those of raw coal.
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Registered trials
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