EFFECT OF CATALYST AND TORREFACTION COUPLING ON PYROLYSIS CHARACTERISTICS OF ELM

Mei Yanyang; Hou Jingfan; Li Wenqi; Chen Ying; Zheng Yanxin; Hou Yuanhao

doi:10.19912/j.0254-0096.tynxb.2023-2106

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 628-635. DOI: 10.19912/j.0254-0096.tynxb.2023-2106

EFFECT OF CATALYST AND TORREFACTION COUPLING ON PYROLYSIS CHARACTERISTICS OF ELM

Mei Yanyang, Hou Jingfan, Li Wenqi, Chen Ying, Zheng Yanxin, Hou Yuanhao

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Abstract

In order to investigate the effect of catalyst and torrefaction coupling on the pyrolysis characteristics of biomass, the elm was torrefied under the various temperatures （220, 250, and 280 ℃）, and then conducted pyrolysis experiments in a vertical furnace using coal ash, biomass ash, and mudstone as the catalysts, and meanwhile, a thermogravimetric analyzer （TG） was utilized to study the effect of catalyst and torrefaction coupling on the weight loss characteristics and kinetic properties of elmwood pyrolysis. The results show that the coupling of coal ash and biomass ash with torrefaction promotes the generation of CO₂ in the pyrolysis gas, while the effect of hydrogen production by mudstone catalyzed pyrolysis is significant. The coupling of mudstone with torrefaction enhances phenolics up to 54.69% at the torrefaction temperature of 280 ℃, while coal ash and biomass ash with torrefaction is more favorable for the generation of aromatic hydrocarbons. The three catalysts coupled respectively respectively with torrefaction at 220 ℃ showes the most obvious promotion of gas yield, respectively. In the low-temperature section, mudstone increases the pyrolysis activation energy of raw sample, but decreases the pyrolysis activation energy of torrefied samples; in the high-temperature section, coal ash decreases the pyrolysis activation energy, while biomass ash and mudstone both increases the pyrolysis activation energy respectively.

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biomass / torrefaction / catalyst / pyrolysis / kinetics

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Mei Yanyang, Hou Jingfan, Li Wenqi, Chen Ying, Zheng Yanxin, Hou Yuanhao. EFFECT OF CATALYST AND TORREFACTION COUPLING ON PYROLYSIS CHARACTERISTICS OF ELM[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 628-635 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2106

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