Cui Longfei, Zhao Wenke, Mostafa Ehab, Zhang Yaning
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China.
Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
Environ Sci Pollut Res Int. 2024 Oct;31(46):57533-57541. doi: 10.1007/s11356-023-30375-1. Epub 2023 Oct 19.
The amount of biomass production each year is huge, and microwave-assisted pyrolysis of biomass to obtain biogas, bio-oil, and biochar is a promising method. In this study, silicon carbide (SiC) was selected as the microwave absorber, and the effects of microwave power (400, 450, 500, 550 and 600 W), reactor chamber volume (100, 150, 200, 250, and 300 W), and the mass ratio of SiC and corn straw (0, 0.25, 0.5, 0.75, and 1) on the heating performances of corn straw particles were investigated and presented in this study. When the microwave power increased from 400 to 600 W, the average heating rate of corn straw particles increased from 23.06 ℃ /min to 101.46 ℃ /min, and that of mixture particles of corn straw and SiC increased from 87.00 ℃ /min to 236.88 ℃/min. When the reactor chamber volume increased from 100 to 300 mL, the average heating rate of corn straw particles decreased from 38.21 ℃/min to 22.54 ℃/min, and that of mixture particles of corn straw and SiC decreased from 98.84 ℃/min to 76.01 ℃/min. When the mass ratio of SiC and corn straw increased from 0 to 1, the average heating rate of mixture particles of corn straw and SiC increased from 101.46 ℃/min to 236.88 ℃/min. Some formulae with R values ranged from 0.971 to 0.998 were proposed to determine the transient temperatures of corn straw particles and mixture particles of corn straw and SiC.
每年生物质的产量巨大，利用微波辅助热解生物质来获取沼气、生物油和生物炭是一种很有前景的方法。在本研究中，选择碳化硅（SiC）作为微波吸收剂，研究了微波功率（400、450、500、550和600W）、反应腔体积（100、150、200、250和300mL）以及SiC与玉米秸秆的质量比（0、0.25、0.5、0.75和1）对玉米秸秆颗粒加热性能的影响，并在本研究中进行了阐述。当微波功率从400W增加到600W时，玉米秸秆颗粒的平均加热速率从23.06℃/min增加到101.46℃/min，玉米秸秆与SiC混合颗粒的平均加热速率从87.00℃/min增加到236.88℃/min。当反应腔体积从100mL增加到300mL时，玉米秸秆颗粒的平均加热速率从38.21℃/min降低到22.54℃/min，玉米秸秆与SiC混合颗粒的平均加热速率从98.84℃/min降低到76.01℃/min。当SiC与玉米秸秆的质量比从0增加到1时，玉米秸秆与SiC混合颗粒的平均加热速率从101.46℃/min增加到236.88℃/min。提出了一些R值范围为0.971至0.998的公式来确定玉米秸秆颗粒以及玉米秸秆与SiC混合颗粒的瞬态温度。
