School of Energy and Environment Engineering, Hebei University of Technology, Tianjin 300401, PR China.
School of Energy and Environment Engineering, Hebei University of Technology, Tianjin 300401, PR China.
Bioresour Technol. 2019 Oct;289:121674. doi: 10.1016/j.biortech.2019.121674. Epub 2019 Jun 20.
The objective of this study is to investigate the pyrolysis and kinetic characteristics of three varieties of the bamboo subfamily via thermogravimetry/Fourier transform infrared spectrometry (TG-FTIR) coupling technologies. The pyrolysis process can be divided into three stages of dehydration, volatilization, and carbonization. TG-FTIR analysis revealed that evolved gas is constituted by CO, CO, CH, HO, NO, NO, formic acid, HCN, and CO functional groups as major pyrolysis products. The kinetic parameters of pyrolysis were calculated using model-free methods of distributed activation energy (DAEM). With an increase in conversion, the activation energy of each bamboo subfamily exhibited distinct variations. The average values of activation energy for moso bamboo, bambusa multiplex, and black bamboo determined by DAEM were 201.59, 220.49, and 224.47 kJ/mol, respectively. Results of thermodynamic and kinetic analysis indicate that the bamboo subfamily shows great potential as an alternative fuel by pyrolysis.
本研究旨在通过热重/傅里叶变换红外光谱（TG-FTIR）联用技术研究三个竹亚科品种的热解和动力学特性。热解过程可分为脱水、挥发和碳化三个阶段。TG-FTIR 分析表明，挥发气体由 CO、CO、CH、HO、NO、NO、甲酸、HCN 和 CO 官能团等主要热解产物组成。采用无模型分布活化能（DAEM）方法计算热解动力学参数。随着转化率的增加，每个竹亚科的活化能表现出明显的变化。通过 DAEM 确定的毛竹、麻竹和黑竹的平均活化能分别为 201.59、220.49 和 224.47 kJ/mol。热力学和动力学分析结果表明，竹亚科通过热解具有作为替代燃料的巨大潜力。
