Devolatilization characteristics of biomass at flash heating rate
Devolatilization characteristics of biomass at flash heating rate
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DOI：
10.1016/j.fuel.2005.08.044
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发表时间：
2006-03
期刊：
影响因子：
7.4
通讯作者：
Xiu Shuangning;Li Zhihe;L. Baoming;Yi Weiming;B. Xueyuan
中科院分区：
文献类型：
--
作者：
Xiu Shuangning;Li Zhihe;L. Baoming;Yi Weiming;B. Xueyuan
在平均加热速率为 104K/s 的等离子加热层流气流反应器 (PHLEFR) 上研究了生物质（麦秆、椰壳、稻壳和棉秆）闪蒸热解过程中的脱挥特性。这些实验是在 750 至 900K 之间的稳定温度下进行的，颗粒停留时间在约 0.115 至 0.240 秒之间变化。引入灰分示踪法来计算在设定温度和停留时间下挥发性产物的产率。该实验研究表明，挥发性产物的产率取决于最终热解温度和停留时间。根据结果，对生物质进行了比较分析，并使用一步全局模型来模拟闪速热解过程并预测热解过程中挥发性产物的产率。还分析并确定了生物质的相应动力学参数。这些结果对于设计合适的热解反应器至关重要。
The devolatilization characteristics of biomass (wheat straw, coconut shell, rice husk and cotton stalk) during flash pyrolysis has been investigated on a plasma heated laminar entrained flow reactor (PHLEFR) with average heating rates of 104K/s. These experiments were conducted with steady temperatures between 750 and 900K, and the particle residence time varied from about 0.115 to 0.240s. The ash tracer method was introduced to calculate the yield of volatile products at a set temperature and the residence time. This experimental study showed that the yield of volatile products depends both on the final pyrolysis temperature and the residence time. From the results, a comparative analysis was done for the biomasses, and a one-step global model was used to simulate the flash pyrolytic process and predict the yield of volatile products during pyrolysis. The corresponding kinetic parameters of the biomasses were also analyzed and determined. These results were essential for designing a suitable pyrolysis reactor.