Dynamic characteristics and model optimization of gas adsorption in loaded coal
With the deep extension of coal mine mining, the influence of ground on occurrence state and regularity of coal seam gas is more and more obvious. In order to better study the kinetic characteristics of gas adsorption in the loaded coal, isothermal adsorption experiments were carried out in coal sam...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Safety in Coal Mines
2024-12-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231425 |
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| author | Jiangwei YAN Tianke RONG Xiang FENG Rui SUN Juntong LI |
| author_facet | Jiangwei YAN Tianke RONG Xiang FENG Rui SUN Juntong LI |
| author_sort | Jiangwei YAN |
| collection | DOAJ |
| description | With the deep extension of coal mine mining, the influence of ground on occurrence state and regularity of coal seam gas is more and more obvious. In order to better study the kinetic characteristics of gas adsorption in the loaded coal, isothermal adsorption experiments were carried out in coal samples under different confining pressures and axial pressures. The quasi-first-order, quasi-second-order, Elovich and Banghamadsorption kinetic models were used to fit and analyze the experimental results, and the adsorption kinetic characteristics and influence mechanism of loaded coal were discussed. It provides a theoretical basis for further exploration of gas occurrence state and law in deep coal seam. Results indicate that as the adsorption progresses, the adsorption capacity increases and the trend gradually slows down and the rate of change of gas adsorption capacity is gradually reduced. The larger the applied load is, the smaller the equilibrium adsorption capacity of gas is. Among the four adsorption kinetic models, the Bangham kinetic model can better describe the dynamic characteristics of coal gas adsorption under the influence of confining pressure, and the quasi-first-order adsorption kinetic model can better describe the dynamic characteristics of coal gas adsorption under the influence of axial pressure. The equilibrium adsorption capacity parameter has a negative power function relationship with confining pressure and axial pressure. The adsorption rate parameters are negatively correlated with the applied load. |
| format | Article |
| id | doaj-art-a30a5428b19b450cacb40215aa7c874e |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-a30a5428b19b450cacb40215aa7c874e2024-12-17T08:29:18ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2024-12-01551210611410.13347/j.cnki.mkaq.20231425lyMKAQ20231425Dynamic characteristics and model optimization of gas adsorption in loaded coalJiangwei YAN0Tianke RONG1Xiang FENG2Rui SUN3Juntong LI4State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo 454003, ChinaAnhui Jiangnan Chemical Industry Co., Ltd., Hefei 230031, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo 454003, ChinaWith the deep extension of coal mine mining, the influence of ground on occurrence state and regularity of coal seam gas is more and more obvious. In order to better study the kinetic characteristics of gas adsorption in the loaded coal, isothermal adsorption experiments were carried out in coal samples under different confining pressures and axial pressures. The quasi-first-order, quasi-second-order, Elovich and Banghamadsorption kinetic models were used to fit and analyze the experimental results, and the adsorption kinetic characteristics and influence mechanism of loaded coal were discussed. It provides a theoretical basis for further exploration of gas occurrence state and law in deep coal seam. Results indicate that as the adsorption progresses, the adsorption capacity increases and the trend gradually slows down and the rate of change of gas adsorption capacity is gradually reduced. The larger the applied load is, the smaller the equilibrium adsorption capacity of gas is. Among the four adsorption kinetic models, the Bangham kinetic model can better describe the dynamic characteristics of coal gas adsorption under the influence of confining pressure, and the quasi-first-order adsorption kinetic model can better describe the dynamic characteristics of coal gas adsorption under the influence of axial pressure. The equilibrium adsorption capacity parameter has a negative power function relationship with confining pressure and axial pressure. The adsorption rate parameters are negatively correlated with the applied load.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231425loaded coalgas adsorptionkinetic modelmodel optimizationcharacteristic analysis |
| spellingShingle | Jiangwei YAN Tianke RONG Xiang FENG Rui SUN Juntong LI Dynamic characteristics and model optimization of gas adsorption in loaded coal Meikuang Anquan loaded coal gas adsorption kinetic model model optimization characteristic analysis |
| title | Dynamic characteristics and model optimization of gas adsorption in loaded coal |
| title_full | Dynamic characteristics and model optimization of gas adsorption in loaded coal |
| title_fullStr | Dynamic characteristics and model optimization of gas adsorption in loaded coal |
| title_full_unstemmed | Dynamic characteristics and model optimization of gas adsorption in loaded coal |
| title_short | Dynamic characteristics and model optimization of gas adsorption in loaded coal |
| title_sort | dynamic characteristics and model optimization of gas adsorption in loaded coal |
| topic | loaded coal gas adsorption kinetic model model optimization characteristic analysis |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231425 |
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