Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province
The occurrence and migration of coalbed methane (CBM) is inseparably associated with the pore structure within the coal seams. Three Permian Longtan Formation tectonic coal samples (QL, XL, XT) from Guizhou Province were studied to determine pore size distribution and characteristics, as well as fac...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/11/3996 |
| _version_ | 1827665176858460160 |
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| author | Hao Sui Xijian Li Peng Pei |
| author_facet | Hao Sui Xijian Li Peng Pei |
| author_sort | Hao Sui |
| collection | DOAJ |
| description | The occurrence and migration of coalbed methane (CBM) is inseparably associated with the pore structure within the coal seams. Three Permian Longtan Formation tectonic coal samples (QL, XL, XT) from Guizhou Province were studied to determine pore size distribution and characteristics, as well as factors that influence adsorption. Adsorption test results show that all samples generally have “ink bottle”-type pores, with large pore capacity but poor connectivity. Furthermore, the fractal dimension <i>D<sub>f</sub></i>, the tortuosity “<i>τ</i>”, and tortuous fractal dimension <i>D</i><sub>T</sub> of samples were calculated. Among the studied tectonic coals, moisture, ash, tortuosity, and volatile fraction have a positive effect on the maximum adsorption capacity (<i>V</i><sub>L</sub>), whereas intact coals’ tortuosity volatile has a negative correlation with the maximum adsorption capacity (<i>V</i><sub>L</sub>). |
| first_indexed | 2024-03-10T01:21:45Z |
| format | Article |
| id | doaj.art-394d5630edb946f5aee316eee9667999 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:21:45Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-394d5630edb946f5aee316eee96679992023-11-23T13:58:37ZengMDPI AGEnergies1996-10732022-05-011511399610.3390/en15113996Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou ProvinceHao Sui0Xijian Li1Peng Pei2College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaCollege of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaMining College, Guizhou University, Guiyang 550025, ChinaThe occurrence and migration of coalbed methane (CBM) is inseparably associated with the pore structure within the coal seams. Three Permian Longtan Formation tectonic coal samples (QL, XL, XT) from Guizhou Province were studied to determine pore size distribution and characteristics, as well as factors that influence adsorption. Adsorption test results show that all samples generally have “ink bottle”-type pores, with large pore capacity but poor connectivity. Furthermore, the fractal dimension <i>D<sub>f</sub></i>, the tortuosity “<i>τ</i>”, and tortuous fractal dimension <i>D</i><sub>T</sub> of samples were calculated. Among the studied tectonic coals, moisture, ash, tortuosity, and volatile fraction have a positive effect on the maximum adsorption capacity (<i>V</i><sub>L</sub>), whereas intact coals’ tortuosity volatile has a negative correlation with the maximum adsorption capacity (<i>V</i><sub>L</sub>).https://www.mdpi.com/1996-1073/15/11/3996tectonic coalpore structureadsorption capacityfractal dimension |
| spellingShingle | Hao Sui Xijian Li Peng Pei Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province Energies tectonic coal pore structure adsorption capacity fractal dimension |
| title | Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province |
| title_full | Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province |
| title_fullStr | Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province |
| title_full_unstemmed | Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province |
| title_short | Study on the Influence of Characteristics of Pore Structure on Adsorption Capacity of Tectonic Coals in Guizhou Province |
| title_sort | study on the influence of characteristics of pore structure on adsorption capacity of tectonic coals in guizhou province |
| topic | tectonic coal pore structure adsorption capacity fractal dimension |
| url | https://www.mdpi.com/1996-1073/15/11/3996 |
| work_keys_str_mv | AT haosui studyontheinfluenceofcharacteristicsofporestructureonadsorptioncapacityoftectoniccoalsinguizhouprovince AT xijianli studyontheinfluenceofcharacteristicsofporestructureonadsorptioncapacityoftectoniccoalsinguizhouprovince AT pengpei studyontheinfluenceofcharacteristicsofporestructureonadsorptioncapacityoftectoniccoalsinguizhouprovince |