Pyrolysis Characteristics of Coal, Biomass, and Coal–Biomass Blends under High Heating Rate Conditions: Effects of Particle Diameter, Fuel Type, and Mixing Conditions
Pyrolysis Characteristics of Coal, Biomass, and Coal–Biomass Blends under High Heating Rate Conditions: Effects of Particle Diameter, Fuel Type, and Mixing Conditions
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DOI：
10.1021/acs.energyfuels.5b00646
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发表时间：
2015-07
期刊：
影响因子：
5.3
通讯作者：
Zhihua Wang;Kaidi Wan;J. Xia;Yong He;Yingzu Liu;Jianzhong Liu
中科院分区：
文献类型：
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作者：
Zhihua Wang;Kaidi Wan;J. Xia;Yong He;Yingzu Liu;Jianzhong Liu
通过实验和数值方法研究了两种中国煤炭、两种生物质材料及其混合物的热解特性。通过研磨和压制制备煤和生物质的单一颗粒用于热解实验，而混合颗粒则通过在压制之前将不同比例的煤和生物质粉末混合制成。样品颗粒在单颗粒反应器系统中热解，记录颗粒温度和质量的时间历史。对煤、生物质和煤-生物质混合物的热解测量数据的分析表明，煤和生物质热解之间不存在协同效应。采用化学渗滤脱挥发分（CPD）模型与粒子能量方程耦合的数值方法来分析热解过程。对于不同颗粒直径、燃料类型和混合条件，模型预测与实验数据非常吻合。事实上，共热解...
The pyrolysis characteristics of two Chinese coals, two biomass materials, and their blends were investigated by both experimental and numerical methods. Single particles of the coal and biomass were prepared for the pyrolysis experiment through grinding and pressing, while the blended particles were made by mixing the coal and biomass powder with different ratios before the pressing. Sample particles pyrolyzed in a single-particle reactor system, with the time history of the particle temperature and mass recorded. The analysis of the measured pyrolysis data of the coal, biomass, and coal–biomass blends indicate the absence of a synergistic effect between the coal and biomass pyrolysis. A numerical method coupling the chemical percolation devolatilization (CPD) model with a particle energy equation was employed to analyze the pyrolysis process. The model prediction agreed well with the experimental data for different particle diameters, fuel types, and blend mixing conditions. The fact that the co-pyrolys...