Devolatilization behaviour of Kolubara and Kostolac lignite (Serbia) during the combustion process: A case study
Објеката
- Тип
- Рад у часопису
- Верзија рада
- објављена верзија
- Језик
- енглески
- Креатор
- Miodrag Životić, Nenad Nikolić, Dragoslava Stojiljković, Danica Bajuk-Bogdanović, Dragana Životić
- Извор
- International Journal of Coal Geology
- Издавач
- Elsevier BV
- Датум издавања
- 2024
- Сажетак
-
In this study the devolatization behaviour of lignite samples, of various grain sizes, on a wire mesh reactor is evaluated. Lignite samples were rapidly heated at four different temperatures (300, 500, 700 and 900 ◦C). The feed lignite reveals a high content of huminite, a low inertinite and liptinite contents in the Kostolac samples and a slightly higher liptinite content in the Kolubara samples. The char obtained at 300 ◦C and 500 ◦C shows slight petrographic and chemical changes. The major changes in chemical and petrographic compositions were observed in char heated at higher temperatures (700 ◦C and 900 ◦C). FTIR spectral data for both Kolubara and Kostolac lignite samples reveal a decrease in aliphatic- and oxygen-containing structures with increase in temperatures from 300 to 700◦C. The lack of aliphatic and oxygen-containing structures, the breakdown of clay minerals and negligible amount of water are detected in samples devolatilized at 900 ◦C where aromatic structures dominate.
Huminite reflectance of initial samples confirms the low rank (lignite) of all the samples. Char of all grain sizes obtained at 300◦C and 500◦C showed very small changes in the maceral composition and reflectance value and still corresponded to lignite rank. A significant change in maceral composition and increase reflectance is observed in char obtained at 700 ◦C and 900 ◦C of all grain sizes.
- том
- 295
- Број
- 104641
- број страница
- 20
- doi
- 10.1016/j.coal.2024.104641
- issn
- 0166-5162
- Subject
- деволатилизација, реактор жичане мреже, петрографски састав, Колубарски и Костолачки басен
- devolatilization, wire mesh reactor, petrographic composition, Kolubara and Kostolac Basins
- Шира категорија рада
- M20
- Ужа категорија рада
- М21а
- Права
- Затворени приступ
- Лиценца
- All rights reserved
- Формат
- Скупови објеката
- Radovi istraživača
Miodrag Životić, Nenad Nikolić, Dragoslava Stojiljković, Danica Bajuk-Bogdanović, Dragana Životić. "Devolatilization behaviour of Kolubara and Kostolac lignite (Serbia) during the combustion process: A case study" in International Journal of Coal Geology, Elsevier BV (2024). https://doi.org/10.1016/j.coal.2024.104641 М21а
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