NUMERICAL SIMULATION STUDY OF BIOMASS AND COAL COMPOSITE SERIAL GASIFICATION PROCESS

Lu Guoqiang; Feng Jiajun; Xiang Xia&#x02019;nan; He Chunhui; Yang Liu; Dai Qi

doi:10.19912/j.0254-0096.tynxb.2025-0534

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 9-19. DOI: 10.19912/j.0254-0096.tynxb.2025-0534

NUMERICAL SIMULATION STUDY OF BIOMASS AND COAL COMPOSITE SERIAL GASIFICATION PROCESS

Lu Guoqiang¹, Feng Jiajun¹, Xiang Xia’nan², He Chunhui², Yang Liu³, Dai Qi¹

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Abstract

This study investigates the biomass and coal composite serial gasification process using the Computational Particle Fluid Dynamics （CPFD） method to develop a comprehensive model. The model accounts for flow behavior, particle dynamics, heat and mass transfer, as well as both homogeneous and heterogeneous chemical reactions within the gasifier. A parametric analysis is conducted to evaluate the effects of gasification temperature, steam-to-biomass ratio （SBR）, biomass-to-coal ratio （BCR）, and biomass particle size on the syngas composition, gas yield, and overall gasification efficiency. Results indicate that higher gasification temperatures enhance gasification performance, although furnace turbulence effects must be considered. Different SBR lead to distinct reaction mechanisms： low SBR favors gas-solid reactions in the dense phase, whereas high SBR enhances homogeneous reactions near the outlet. A higher BCR is recommended to improve efficiency. Furthermore, performance varies little across different biomass raw materials, indicating that the proposed process allows for flexible raw materials substitution.

Key words

biomass / coal / serial / gasification / CPFD / simulation

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Lu Guoqiang, Feng Jiajun, Xiang Xia’nan, He Chunhui, Yang Liu, Dai Qi. NUMERICAL SIMULATION STUDY OF BIOMASS AND COAL COMPOSITE SERIAL GASIFICATION PROCESS[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 9-19 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0534

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