摘要
为了防治煤自燃火灾,研究铜的化合物对煤氧化升温过程的影响,选用6种含铜化合物,将其与新疆褐煤混匀后进行同步热分析实验;通过TG和DSC数据,分析加入铜的化合物前后煤在氧化升温过程中各特征温度点的变化规律,并阐明了加入化合物前后煤的着火活化能变化和放热特性的变化规律。结果表明:加入铜的化合物后煤的各特征温度点较原煤均有所下降,着火点前的失重量较原煤有所增加,着火活化能降低为原煤的0.66~0.85倍;氧化放热峰和燃烧放热峰峰位较原煤有所前移,氧化放热量升高至原煤的1.14~2.48倍,表明铜的化合物对煤自燃具有催化作用。
In order to prevent spontaneous coal fire,the effect of copper compounds on coal oxidation and heating process was studied.Six compounds containing copper were selected and mixed with Xinjiang lignite for synchronous thermal analysis.Based on TG and DSC data,the variation of characteristic temperature points of coal before and after the addition of copper compounds was analyzed,and the variation of ignition activation energy and heat release characteristics of coal before and after the addition of copper compounds was clarified.The results show that the characteristic temperature points of coal with copper compound are lower than that of raw coal.The weight loss before ignition point increased compared with raw coal.The ignition activation energy decreases to 0.66-0.85 times of raw coal.Compared with raw coal,the oxidative heat release peak and combustion heat release peak moved forward,and the oxidative heat release increased to 1.14-2.48 times of raw coal.These results indicate that these copper compounds have catalytic effect on spontaneous combustion of coal.
作者
高山
乔玲
金智新
王延生
武司苑
GAO Shan;QIAO Ling;JIN Zhixin;WANG Yansheng;WU Siyuan(College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030032,China;Jinneng Holding Group Co.,Ltd.,Datong 037000,China;School of Safety Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China)
出处
《煤矿安全》
CAS
北大核心
2022年第8期56-61,共6页
Safety in Coal Mines
关键词
煤自燃
铜的化合物
热重
活化能
热效应
spontaneous combustion of coal
copper compound
thermogravimetry
activation energy
heat effect
