Combustion Characterization and Kinetic Analysis of Coupled Combustion of Bio-Syngas and Bituminous Coal

Ailing He, Zaifeng Li, Bingdong Gu and Tingzhou Lei ()
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Ailing He: School of Civil and Transportation Engineering, Qinghai Minzu University, Xining 810007, China
Zaifeng Li: Henan Key Lab of Biomass Energy, Zhengzhou 450008, China
Bingdong Gu: School of Civil and Transportation Engineering, Qinghai Minzu University, Xining 810007, China
Tingzhou Lei: Institute of Urban & Rural Mining CCZU, Changzhou University, Changzhou 213164, China

Energies, 2024, vol. 17, issue 23, 1-16

Abstract: The coupled combustion of bio-syngas and bituminous coal is an effective technology to reduce pollutant emissions from coal-fired power plants and improve the utilization rate of biomass energy. However, the effects of bio-syngas blending on bituminous coal combustion characteristics and reaction kinetics remain unclear, restricting the development of bio-syngas and bituminous coal combustion technology. In this study, the experimental studies on the coupled combustion of bio-syngas and bituminous coal under different bio-syngas lower-heating-value-based blending ratio (BLBR) were carried out by Micro-Fluidized Bed Reaction Analyzer (MFBRA), the coupled combustion characteristics and kinetic reaction mechanism of coupled combustion of bio-syngas and bituminous coal were analyzed. The results indicated that the nucleation and growth model (F1 Model) provided a reasonable description of the bituminous coal combustion process on the coupled combustion of bio-syngas and bituminous coal in MFBRA. The blending of bio-syngas significantly reduces the apparent activation energy and pre-exponential factor of bituminous coal combustion reaction. In particular, when the BLBR is 5, 10, 20, and 30%, the apparent activation energy is 48.70, 45.45, 46.75, and 42.35 kJ·mol −1 , and the pre-exponential factor is 9.26, 7.10, 8.95, and 6.70 s −1 , respectively. This research is helpful for improving the coupled combustion efficiency and ensuring the efficient operation of the coupled combustion system.

Keywords: coupled combustion; micro-fluidized bed reaction analyzer; bio-syngas; bituminous coal; reaction mechanism; bio-syngas lower heating value-based blending ratio (BLBR) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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