Kinetics of the joint and individual thermal decomposition of coals and waste-derived components; Powder Technology; Vol. 479
| Parent link: | Powder Technology.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 479.— 2026.— Article number 122542, 15 p. |
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| Other Authors: | , , , , |
| Summary: | Title screen The article presents an analysis of thermal decomposition process in an inert environment for various grades of coal, wood sawdust and waste motor oil, as well as their mixtures. A parametric study revealed the influence of particle size, heating rate, H/C atomic ratio, ash content, humidity, and proportion of volatiles on the limiting onset conditions and rate of thermal decomposition of coals. The activation energies of thermal decomposition of individual components and fuel mixtures were determined at different conversion rates. When heating pulverized lignite, it was found that the lowest activation energy for thermal decomposition is characteristic of lignite with large particles (500–1000 μm). For mixed fuels, the interaction of the components contributed to synergistic effects of 7%, both accelerating and decelerating thermal decomposition. The experiments showed that highly reactive additives increased the rate of thermal decomposition of the mixed fuels several times compared to pulverized coal, and also decreased the temperature of the pyrolysis onset compared to the original lignite. Empirical formulas for calculating the kinetic characteristics of thermal decomposition of components and their mixtures were obtained considering fuel properties and heating conditions. The performed multicriterial analysis determined the most promising compositions with the best overall thermal conversion indicators Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.powtec.2026.122542 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=686541 |
| Summary: | Title screen The article presents an analysis of thermal decomposition process in an inert environment for various grades of coal, wood sawdust and waste motor oil, as well as their mixtures. A parametric study revealed the influence of particle size, heating rate, H/C atomic ratio, ash content, humidity, and proportion of volatiles on the limiting onset conditions and rate of thermal decomposition of coals. The activation energies of thermal decomposition of individual components and fuel mixtures were determined at different conversion rates. When heating pulverized lignite, it was found that the lowest activation energy for thermal decomposition is characteristic of lignite with large particles (500–1000 μm). For mixed fuels, the interaction of the components contributed to synergistic effects of 7%, both accelerating and decelerating thermal decomposition. The experiments showed that highly reactive additives increased the rate of thermal decomposition of the mixed fuels several times compared to pulverized coal, and also decreased the temperature of the pyrolysis onset compared to the original lignite. Empirical formulas for calculating the kinetic characteristics of thermal decomposition of components and their mixtures were obtained considering fuel properties and heating conditions. The performed multicriterial analysis determined the most promising compositions with the best overall thermal conversion indicators Текстовый файл AM_Agreement |
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| DOI: | 10.1016/j.powtec.2026.122542 |