RESEARCH ON COMBUSTION CHARACTERISTICS OF Sophora japonica BIOCHAR AND PHYSICAL PROPERTIES OF HOT PRESS MOLDING

Yang Yuanqing; Liu Wending; Wang Di; Liu Jiaxin; Guo Shaodong; Zhang Jing

doi:10.19912/j.0254-0096.tynxb.2024-2412

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 401-409. DOI: 10.19912/j.0254-0096.tynxb.2024-2412

RESEARCH ON COMBUSTION CHARACTERISTICS OF Sophora japonica BIOCHAR AND PHYSICAL PROPERTIES OF HOT PRESS MOLDING

Yang Yuanqing^1,2, Liu Wending¹, Wang Di¹, Liu Jiaxin¹, Guo Shaodong³, Zhang Jing^1,2

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Abstract

The Sophora japonica garden waste was pyrolyzed at 240 ℃, 320 ℃, 400 ℃ and 480 ℃, respectively, and industrial analysis, elemental analysis, calorific value analysis and thermogravimetric test were carried out to select the biochar with the best combustion characteristics as the raw material of biochar, and the response optimization of the molding process parameters was carried out using the response surface methodology and ant colony algorithm for the parameters of its molding process. The results show that when the pyrolysis temperature of Sophora japonica garden waste is 480 ℃, the fixed carbon content is 67.67%, the calorific value is 5713.70 kcal/kg, the comprehensive combustion characteristic index is 0.0944×10-8 mg2/K3·min2, and the volatility analyzed characteristic index is 0.1093×10-4 mg/K2·min2, which meets the requirement of Grade I biochar and makes it the best raw material for molding. The optimal molding process parameters are as follows： the temperature is 84 ℃, the pressure is 111 MPa, the percentage of binder is 18%, and the water content is 18%. Under these conditions, the density and shatter resistance of the fuel were 1.0347 gcm3and 98.722%, respectively.

Key words

fuel / combustion / physical properties / Sophora japonica / biochar / agricultural residues

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Yang Yuanqing, Liu Wending, Wang Di, Liu Jiaxin, Guo Shaodong, Zhang Jing. RESEARCH ON COMBUSTION CHARACTERISTICS OF Sophora japonica BIOCHAR AND PHYSICAL PROPERTIES OF HOT PRESS MOLDING[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 401-409 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2412

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