Thermal Decomposition, Ignition, Combustion and Gasification of Coal and Biomass Composite


Baidildina A. Nurgaliyeva A. Kopyev E. Kuznetsov A. Butakov E. Shadrin E. Domarov P. Alekseenko S. Lomovsky I.
December 2025Multidisciplinary Digital Publishing Institute (MDPI)

Energies
2025#18Issue 24

This study investigates the thermal decomposition, ignition, combustion, and gasification processes of composite fuels derived from anthracite coal and pine sawdust. The research highlights the non-additive behavior of composite fuels, demonstrating enhanced reactivity and combustion efficiency compared to simple mixtures. Thermogravimetric analysis (TGA) revealed distinct stages of thermal decomposition, with composite fuels exhibiting combined processes of volatile release and coke residue decomposition, unlike mixtures. Ignition experiments in a vertical tubular furnace showed reduced flash delay times for composites, attributed to the formation of active surface centers during mechanical activation. Flare combustion studies confirmed more stable and complete combustion of composites, achieving higher temperatures and improved flame stability. Plasma gasification experiments indicated that composite fuels provide more uniform gas evolution, with higher yields of hydrogen (H2) and carbon monoxide (CO), while reducing nitrogen oxide (NO) emissions. The findings underscore the potential of composite fuels for optimizing energy efficiency and reducing environmental impact in coal-fired power plants, supporting the transition to sustainable energy solutions.

anthracite , biomass , combustion , composite fuel , gasification , ignition , renewable energy , thermal decomposition

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School of Architecture, Civil Engineering and Energy, D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, 070004, Kazakhstan
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
Department of Physics, Novosibirsk State University, Novosibirsk, 630090, Russian Federation
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

School of Architecture
Kutateladze Institute of Thermophysics
Department of Physics
Institute of Solid State Chemistry and Mechanochemistry

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