Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps
The paper presents the results of a study of epigenetic changes in technogenic-redeposited coal-bearing rocks of Irkutsk and Kuznetsk coal basin spoil heaps (Russia). Hydrocarbon products formed under high-temperature and low-temperature pyrolysis of coal-bearing rocks were studied by using a chroma...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/10/4/122 |
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| author | Nikolay I. Akulov Varvara V. Akulova |
| author_facet | Nikolay I. Akulov Varvara V. Akulova |
| author_sort | Nikolay I. Akulov |
| collection | DOAJ |
| description | The paper presents the results of a study of epigenetic changes in technogenic-redeposited coal-bearing rocks of Irkutsk and Kuznetsk coal basin spoil heaps (Russia). Hydrocarbon products formed under high-temperature and low-temperature pyrolysis of coal-bearing rocks were studied by using a chromatography-mass spectrometer GCMS-QP2010NC Plus (made by Shimadzu Company). The average temperature of low-temperature natural pyrolysis does not exceed 120 °C, and its average speed is approximately 2 m/year. In this case, three pyrolysis zones gradually built metamorphic rock mass (from bottom to top) are clearly established: heating (focal) activated and enriched. The average temperature of high-temperature pyrolysis reaches 850 °C, and its average speed is approximately 20 m/year. Unlike low-temperature pyrolysis, high-temperature pyrolysis is accompanied by the presence of two major zones (from bottom to top): pyrogenic (focal) and enriched (coke). The chemical composition of the enriched pyrolysis zone was studied in detail. It has been established that hydrocarbon compounds in samples of the pyrolysis zone are presented by six classes: asphaltic-resinous substances; polycyclic aromatic hydrocarbons, heterocyclic compounds, organic sulphur compounds; pyrolytic hydrocarbon and heavy hydrocarbon residue. Quantitative content of hydrocarbon compounds in the analyzed samples varies from 0.35% to 41.88%. |
| first_indexed | 2024-03-11T10:10:32Z |
| format | Article |
| id | doaj.art-132013eb28e449809ec7acf32434727f |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-11T10:10:32Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-132013eb28e449809ec7acf32434727f2023-11-16T14:33:35ZengMDPI AGGeosciences2076-32632020-03-0110412210.3390/geosciences10040122Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil HeapsNikolay I. Akulov0Varvara V. Akulova1Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences; Irkutsk State University, 664033 Irkutsk, RussiaInstitute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences; Irkutsk State University, 664033 Irkutsk, RussiaThe paper presents the results of a study of epigenetic changes in technogenic-redeposited coal-bearing rocks of Irkutsk and Kuznetsk coal basin spoil heaps (Russia). Hydrocarbon products formed under high-temperature and low-temperature pyrolysis of coal-bearing rocks were studied by using a chromatography-mass spectrometer GCMS-QP2010NC Plus (made by Shimadzu Company). The average temperature of low-temperature natural pyrolysis does not exceed 120 °C, and its average speed is approximately 2 m/year. In this case, three pyrolysis zones gradually built metamorphic rock mass (from bottom to top) are clearly established: heating (focal) activated and enriched. The average temperature of high-temperature pyrolysis reaches 850 °C, and its average speed is approximately 20 m/year. Unlike low-temperature pyrolysis, high-temperature pyrolysis is accompanied by the presence of two major zones (from bottom to top): pyrogenic (focal) and enriched (coke). The chemical composition of the enriched pyrolysis zone was studied in detail. It has been established that hydrocarbon compounds in samples of the pyrolysis zone are presented by six classes: asphaltic-resinous substances; polycyclic aromatic hydrocarbons, heterocyclic compounds, organic sulphur compounds; pyrolytic hydrocarbon and heavy hydrocarbon residue. Quantitative content of hydrocarbon compounds in the analyzed samples varies from 0.35% to 41.88%.https://www.mdpi.com/2076-3263/10/4/122coal-bearing rockspoil heappyrolysis processhydrocarbon compoundcoal basin |
| spellingShingle | Nikolay I. Akulov Varvara V. Akulova Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps Geosciences coal-bearing rock spoil heap pyrolysis process hydrocarbon compound coal basin |
| title | Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps |
| title_full | Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps |
| title_fullStr | Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps |
| title_full_unstemmed | Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps |
| title_short | Pyrolysis of Technogenic-Redeposited Coal-Bearing Rocks of Spoil Heaps |
| title_sort | pyrolysis of technogenic redeposited coal bearing rocks of spoil heaps |
| topic | coal-bearing rock spoil heap pyrolysis process hydrocarbon compound coal basin |
| url | https://www.mdpi.com/2076-3263/10/4/122 |
| work_keys_str_mv | AT nikolayiakulov pyrolysisoftechnogenicredepositedcoalbearingrocksofspoilheaps AT varvaravakulova pyrolysisoftechnogenicredepositedcoalbearingrocksofspoilheaps |