自然发火实验测定煤低温氧化活化能

Measurement of Activation Energy of Coal Oxidation at Low Temperature by Spontaneous Combustion Experiment

煤低温氧化活化能是分析煤自燃特性的重要指标。文章提出了利用可加热的小型自燃发火实验台测定煤低温氧化活化能的方法。利用该方法测试了不同自燃倾向性、不同粒度范围煤样的低温氧化活化能,并研究了动态吸氧量、粒度与活化能之间的关系。运用自然发火实验可以准确测定实际煤体的低温氧化活化能,测试结果符合实际的煤低温氧化特性,可以较好地表征煤自燃倾向性。

Activation energy of coal oxidation at low temperature is an important index to analyze spontaneous combustion character of coal.The text proposes a new measuring method of activation energy of coal oxidation at low temperature by using small-sized spontaneous combustion experimental table with heating power.Activation energy of coal oxidation with different tendency of spontaneous combustion and size can be measured.Furthermore,the relationship of activation energy with dynamic oxygen consumption and size is studied.The activation energy can be measured exactly by spontaneous combustion experiment.The result can fit for the practical character of coal oxidation and reflect the tendency of spontaneous combustion of coal well.