Study on the combustion kinetic characteristics of biomass tar under catalysts
Study on the combustion kinetic characteristics of biomass tar under catalysts
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DOI：
10.1007/s10973-008-9126-8
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发表时间：
2009-03
影响因子：
4.4
通讯作者：
Chunshan Li;Y. Yamamoto;M. Suzuki;D. Hirabayashi;Kenzi Suzuki
中科院分区：
文献类型：
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作者：
Chunshan Li;Y. Yamamoto;M. Suzuki;D. Hirabayashi;Kenzi Suzuki
用热重和差热分析方法研究了生物质焦油在5℃和15℃−1两种不同升温速率下，白云石和蛋黄石共存时的燃烧行为。用经典的Arrhenius模型处理了不同的反应动力学机理，结果表明一级燃烧模型与实验数据吻合较好。提出了三段燃烧模型，并成功地应用于动力学参数的计算。由于共存催化剂的存在，高温燃烧阶段的起始温度提前了近100℃，生物质燃烧阶段的燃烧量也提高了近10%。通过计算发现，随着白云石和油云石的加入，焦油的燃烧活化能有一致的降低趋势，焦油的燃烧速度和燃烧速度也得到了显著的提高。
TG and DTA experiments were performed to investigate the biomass tar combustion behavior in coexistence of dolomite and mayenite at two different heating rates as 5 and 15°C min−1. Different reaction kinetic mechanisms with the classical Arrhenius model were used to treat TG data, and showed that the first-order combustion model fitted the data well. Three stages combustion model was proposed and applied for the calculation of kinetics parameters successfully. The starting temperature of high temperature combustion stage moved up near 100°C because of the coexistence catalysts, and the combustion amount of biomass of the stage also improved nearly 10 mass%. By calculation a uniform trend of decreasing activation energies was observed with the addition of dolomite and mayenite, and also greatly improved the amount and speed of tar combustion process.