铜的化合物对煤自燃特性的影响
Effect of copper compounds on spontaneous combustion characteristics of coal
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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。Abstract: 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.
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[1] 乔玲．煤中金属化合物对煤自燃的催化机理及其惰化改性研究[D]．阜新：辽宁工程技术大学，2020. [2] 李增华．煤炭自燃的自由基反应机理[J]．中国矿业大学学报，1996，25（3）：111－114. LI Zenghua. Mechanism of free radical reactions in spontaneous combustion of coal[J]. Journal of China University of Mining & Technology, 1996, 25（3）: 111.
[3] WANG H H, Bogdan Z D, Eric M. Kennedy. Coal oxidation at low temperatures: oxygen consumption, oxidation products, reaction mechanism and kinetic modelling[J]． Progress in Energy and Combustion Science, 2003, 29（6）: 487-513. [4] 马冬娟，唐一博．煤中伴生金属元素对煤低温氧化特性的影响[J]．煤炭科学技术，2019，47（2）：203－207. MA Dongjuan, TANG Yibo. Influence of associated metal elements in coal on low-temperature oxidation characteristics of coal[J]． Coal Science and Technology, 2019, 47（2）: 203-207.
[5] 刘艳华，车得福，李荫堂，等．几种含铁化合物对煤燃烧特性的影响[J]．西安交通大学学报，2000（9）：20. LIU Yanhua, CHE Defu, LI Yintang, et al. Effect of iron compounds on coal combustion characteristics[J]． Journal of Xi’an Jiaotong University, 2000（9）: 20.
[6] Li X G, Ma B G, Xu L, et al. Catalytic effect of metallic oxides on combustion behavior of high ash coal[J]. ENERGY & FUELS, 2007, 21（5）: 2669-2672. [7] 任德贻．煤的微量元素地球化学[Ｍ]．北京：科学出版社，2006. [8] 巨建涛，梁林旺，张朝晖，等．高炉喷吹煤粉添加助燃剂的研究[J]．钢铁研究，2008（3）：36－39. JU Jiantao, LIANG Linwang, ZHANG Chaohui, et al. Study on combustion catalyst mixed in pulverized coal used for blast furnace injection[J]. Research on Iron and Steel, 2008（3）: 36-39.
[9] 朱川，姜英．铁法煤催化燃烧与分布活化能模型动力学研究[J]．煤炭转化，2013，36（3）：42－47. ZHU Chuan, JIANG Ying. Catalytic combustion effects and distributed activation energy model of TF coal[J]. Coal Conversion, 2013, 36（3）: 42-47.
[10] 张宾，林永权，陶从喜，等．几种金属化合物对烟煤燃烧特性影响的研究[J]．中国水泥，2020（12）：78－82. ZHANG Bin, LIN Yongquan, TAO Congxi, et al. Influence of several metal compounds on combustion characteristics of bituminous coal[J]. China Cement, 2020（12）: 78-82.
[11] 邓存宝，乔玲，王雪峰，等．浸水褐煤的自燃特性及红外分析[J]．中国安全科学学报，2018，28（8）：105. DENG Cunbao, QIAO Ling, WANG Xuefeng, et al. Spontaneous combustion characteristics and infrared analysis of soaked lignite[J]. China Safety Science Joural, 2018, 28（8）: 105.
[12] 阚罗．浸水过程对低阶煤低温氧化促进作用的实验研究[D]．徐州：中国矿业大学，2019. [13] 张玉涛，史学强，李亚清，等．锌镁铝层状双氢氧化物对煤自燃的阻化特性[J]．煤炭学报，2017，42（11）：2892－2899. ZHANG Yutao, SHI Xueqiang, LI Yaqing, et al. Inhibiting effects of Zn/Mg/Al layer double hydroxide on coal spontaneous combustion[J]. Journal of China Coal Society, 2017, 42（11）: 2892-2899.
[14] 张玉涛，史学强，李亚清，等．环保型煤自燃阻化剂的阻化特性及机理研究[J]．中国矿业大学学报，2018， 47（6）：1224－1232. ZHANG Yutao, SHI Xueqiang, LI Yaqing, et al. Mechanism and inhibiting effects of environmental-friendly inhibitor on coal spontaneous combustion[J]. Journal of China University of Mining & Technology, 2018, 47（6）: 1224-1232.
[15] 乔玲，邓存宝，张勋，等．浸水对煤氧化活化能和热效应的影响[J]．煤炭学报，2018，43（9）：2518－2524. QIAO Ling, DENG Cunbao, ZHANG Xun, et al. Effect of soaking on coal oxidation activation energy and thermal effect[J]. Journal of China Coal Society, 2018, 43（9）: 2518-2524.
[16] 孙艳秋．煤炭自燃的阻化改性研究[D]．阜新：辽宁工程技术大学，2008. [17] 邓存宝．煤的自燃机理及自燃危险性指数研究[D]．阜新：辽宁工程技术大学，2006． -
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