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基于DSC的煤自燃倾向性研究

Jianfang ZHU,Jiamin DUAN,Wenjie GUO

Journal of North China Institute of Science and Technology（2018）

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Abstract
由于目前煤自燃倾向性鉴定方法的局限性,本文尝试引入差分扫描量热法(DSC),对低温阶段煤的氧化特性进行研究.通过对不同煤样不同粒径下的DSC 实验,并根据DSC 动力学法中的 Kissinger 法对煤低温氧化的表观活化能进行计算,发现煤的粒径越小,表观活化能越小,则自燃倾向性越大.同时,通过DSC 动力学法得到的煤低温氧化活化能与实际自然发火周期对比,其呈现的趋势一致.因此基于DSC 动力法对煤自燃倾向性的研究有一定的理论与实际意义.
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Key words
coal spontaneous combustion tendency,differential scanning calorimetry(DSC),apparent activation energy
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