基于温升速率的煤自燃倾向性测定方法

发布时间：2018-04-04 16:39

  本文选题：自燃倾向性　切入点：温升特性　出处：《科学技术与工程》2017年30期

【摘要】：为了准确判定煤炭真实条件下自燃倾向性,选取具有代表性的2种褐煤、2种烟煤及2种无烟煤在煤自燃测定装置上展开研究。研究结果表明,褐煤在低温缓慢氧化阶段、高温加速氧化阶段升温速率最快,烟煤次之,无烟煤最慢。利用热分析仪对煤样的着火温度进行了测定,发现褐煤着火温度最低,烟煤次之,无烟煤着火温度最高;综合评判煤自燃倾向性判定指数,I200为强自燃倾向,200≤I≤400为中等自燃倾向,I400为弱自燃倾向。
[Abstract]:In order to accurately determine the spontaneous combustion tendency of coal under real conditions, two kinds of lignite and two kinds of bituminous coal and two kinds of anthracite were selected to study on the determination device of spontaneous combustion of coal.The results show that lignite has the fastest heating rate in the stage of slow oxidation at low temperature and accelerated oxidation at high temperature, followed by bituminous coal and anthracite.The ignition temperature of coal sample was measured by thermal analyzer. It was found that the ignition temperature of lignite was the lowest, bituminous coal was the second, and anthracite was the highest.Comprehensive evaluation of coal spontaneous combustion propensity judging index I 200 is a strong spontaneous combustion tendency 200 鈮，

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