【摘要】 通过对不同混合比糠醛渣和稻壳的混合物进行热重分析试验,发现主要热解温度区间明显的分为两个阶段,表现出不同的热解机理;糠醛渣和稻壳的混合比对热解过程有影响,共热解不是两种生物质单独热解贡献的简单叠加。在热解反应活跃区间建立与糠醛渣和稻壳混合物固有热解特性相适应的分段分级热解动力学模型,计算得到热解动力学参数。最后应用Newton-coats数值求积方法对模型进行验证,并与实验曲线进行对比,结果表明该模型具有较强的可靠性和实用性。更多还原

【Abstract】 Co-pyrolysis behavior of furfural residue and rice husk blends was investigated in a thermogravimetric analyzer(TGA) reaction system in a nitrogen atmosphere. The results show that the main pyrolysis temperature region can be separated into two distinct phases, which represents different pyrolysis mechanisms; Weight (fraction) of furfural residue or rice husk has influence on pyrolysis characteristics of the blends; Co-pyrolysis of biomasses was not simply additive of its individual contributions. During the main pyrolysis temperature region, a two-stage different reaction series pyrolysis kinetics model was developed which was fit for the intrinsic property of the blends and the kinetics parameters of activation energy and frequency factor were determined using Coats-Redfern analyses. At last this model was verified by Newton-coats numerical integral methods and the result (indicated) its reliability and practicability.更多还原