基于锥形量热仪的氧化煤燃烧特性研究  

Study on Combustion Characteristics of Oxidized Coal Based on Cone Calorimeter

作　　者：徐迪淇 张雷林[1,2] XU Diqi;ZHANG Leilin(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Coal Efficient Mining,Ministry of Education,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]安徽理工大学煤炭高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤炭技术》2025年第1期140-144,共5页Coal Technology

基　　金：国家自然科学基金资助项目(51874008)。

摘　　要：为了研究氧化煤的燃烧特性,以朱集西煤矿1/3焦煤为研究对象,在不同预氧化温度(80℃、140℃、200℃)下对煤样进行氧化处理10 h,并以原煤为对照,利用锥形量热仪测试煤样的点燃时间、热释放速率、总热释放量等主要燃烧特征参数。结果表明:随着预氧化温度的提高,煤样点燃时间I_(TT)、CO气体变化呈现先减小后增大的趋势,热释放速率峰值P_(HRR)、总热释放量T_(HR)、CO_(2)气体变化、质量损失速率R_(ML)峰值呈现先增大后减小的趋势。结合测试数据,并计算出火灾增长指数G_(FI)和火灾性能指数P_(FI),得出氧化煤与原煤的火灾危险性程度大小关系为140℃氧化煤样>80℃氧化煤样>原煤>200℃氧化煤样。In order to study the combustion characteristics of oxidized coal,the 1/3 coking coal of Zhujixi coal mine was taken as the research object.The coal samples were oxidized at different preoxidation temperatures(80℃,140℃,200℃)for 10 h.The main combustion characteristic parameters such as time to ignition,heat release rate and total heat release of coal samples were measured by cone calorimeter.The results show that with the increase of pre-oxidation temperature,the time to ignition I_(TT) and CO gas change of coal samples decrease first and then increase,while the peak heat release rate P_(HRR),total heat release T_(HR),CO_(2) gas and mass loss rate R_(ML) increase first and then decrease.Combined with the test data,the fire growth index G_(FI) and fire performance index P_(FI) are calculated,and the relationship between the fire risk degree of oxidized coal and raw coal is 140℃ oxidized coal sample>80℃ oxidized coal sample>raw coal>200℃ oxidized coal sample.

关 键 词：氧化煤 燃烧特征参数 点燃时间 热释放速率 火灾危险性 

分 类 号：TD75[矿业工程—矿井通风与安全]