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以10~30℃/min的加热速率在同步热分析仪上进行热重试验,用Malek法确定和建立油茶壳的主热解阶段的热解机理模型,主热解阶段满足J-M-A方程,即随机成核和随后成长。根据生物质热解分段模型计算验证油茶壳热解模型的正确性和适用性,分段模型拟合数据与热重数据的平均误差在2.5%以内,建立的模型能正确预测热解反应。在自行研制的生物质连续热解装置上进行油茶壳的热解实验,结果表明,热解实验升温不是理论上的线性升温过程,但实验数据与热重试验数据比较吻合,平均误差较小。这说明所建立的模型能较好地反映油茶壳的热解反应,为油茶壳的热解利用提供理论基础。
Thermal gravimetric tests were carried out on a synchronous thermal analyzer at a heating rate of 10-30 ° C / min. Malek’s method was used to determine and establish a pyrolysis mechanism model for the main pyrolysis stage of Camellia oleifera. The main pyrolysis stage satisfied the JMA equation Nucleation and subsequent growth. The correctness and applicability of pyrolysis model of Camellia oleifera were verified by biomass pyrolysis staging model. The average error between the fitting data and thermogravimetric data was less than 2.5%. The established model can correctly predict the pyrolysis reaction. Pyrolysis experiments of Camellia oleifera were carried out on self - developed biomass continuous pyrolysis unit. The results show that the pyrolysis experiment is not a theoretical linear temperature increase process, but the experimental data are in good agreement with the thermogravimetry data, and the average error is small. This shows that the established model can better reflect the pyrolysis reaction of Camellia oleifera, providing the theoretical basis for pyrolysis and utilization of Camellia.