Abstract

The combustion processes of brown coal, wood biomass, cardboard, and their mixtures in an oxidizing atmosphere at a heating rate of 20 K/min were studied within the framework of synchronous thermal analysis. The curves of weight loss and differential scanning calorimetry were obtained to describe the combustion processes of individual fuels and solid fuel mixtures with a weight ratio of 50 : 50. The main process parameters of combustion, such as ignition and burnout temperatures and a maximum rate of reaction were determined using analytical and numerical methods. The combustion indices of the fuels and their mixtures were established, and the kinetic parameters of the test processes were calculated. Based on the differential weight loss data, the nature of interactions between fuel mixture components was determined. The high volatile content of wood sawdust and cardboard affected a decrease in the ignition temperature of the mixtures by 15–18%, as compared to that of brown coal. The burning temperature of a mixture with the addition of wood sawdust decreased by 6.5%, and the addition of cardboard affected an increase in the burning temperature of the mixture by 27%.

中文翻译：

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褐煤、松木屑、纸板及其混合物燃烧过程的热分析

摘要

在同步热分析的框架内研究了褐煤、木材生物质、纸板及其混合物在加热速率为 20 K/min 的氧化气氛中的燃烧过程。获得失重曲线和差示扫描量热曲线，描述重量比为 50 : 50 的单个燃料和固体燃料混合物的燃烧过程。燃烧的主要过程参数，如点火和燃尽温度以及最大燃烧速率使用分析和数值方法确定反应。建立了燃料及其混合物的燃烧指数，并计算了测试过程的动力学参数。基于差分重量损失数据，确定了燃料混合物组分之间相互作用的性质。与褐煤相比，木屑和纸板的高挥发物含量使混合物的着火温度降低了 15-18%。添加木屑的混合物的燃烧温度降低了 6.5%，而添加纸板使混合物的燃烧温度提高了 27%。