赵维国;李经文;张辛亥;卢苗苗;林清松;张家亮;

• 1:辽宁工程技术大学矿业学院
• 2:西安科技大学西部矿井开采及灾害防治教育部重点实验室
• 3:西安科技大学安全科学与工程学院
• 4:内蒙古伊泰煤炭股份有限公司

摘要(Abstract)：

东荣矿区煤层自燃现象较为严重,煤的氧化动力学参数是反映煤自燃倾向性的重要指标,为防治东荣矿区煤层自燃,在不同升温速率条件下的基础上,应用热重分析实验,研究了东荣煤样升温氧化过程中质量变化的规律,同时结合15种气固反应机理函数,运用?atava法对煤样进行动力学分析,确定了煤氧化机理函数,及活化能、指前因子及反应级数等动力学参数,并应用Ozawa法对得到的动力学参数结果进行了验证。实验表明:不同升温速率下煤样氧化自燃总反应历程相似,热分析曲线的变化规律相同,但随着升温速度的加大,曲线有向右平移的趋势。计算得到煤样高温剧烈氧化时的反应级数为1级,反应动力学模式为一级化学反应,其表观活化能为174.588 kJ/mol,指前因子为5.729×10~(10).

关键词(KeyWords)： 热重实验;特征温度;热分析动力学;活化能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 赵维国;李经文;张辛亥;卢苗苗;林清松;张家亮;

Email:

DOI: 10.13800/j.cnki.xakjdxxb.2020.0207

参考文献(References)：

• [1] 潘树仁,潘海洋,谢志清,等.新时代背景下煤炭绿色勘查技术体系研究[J].中国煤炭地质,2018,30(6):10-13.PAN Shu-ren,PAN Hai-yang,XIE Zhi-qing,et al.Study on coal green exploration technological system under new era background[J].Coal Geology of China,2018,30(6):10-13.
• [2] Michieka N M,Fletcher J J.An investigation of the role of China’s urban population on coal consumption[J].Energy Policy,2012,48(C):668-676.
• [3] Zhang J,Ren T,Liang Y,et al.A review on numerical solutions to self-heating of coal stockpile:Mechanism,theoretical basis,and variable study[J].Fuel,2016,182:80-109.
• [4] 张燕妮.煤氧化自燃微观特征及宏观表征研究[D].西安:西安科技大学,2012.ZHANG Yan-ni.Microscopic characteristics and macroscopic characterization of coal oxidizing spontaneous combustion[D].Xi’an:Xi’an University of Science and Technology,2012.
• [5] 曹代勇,樊新杰,吴查查,等.内蒙古乌达煤田火区相关裂隙研究 [J].煤炭学报,2009,34(8):1009-1014.CAO Dai-yong,FAN Xin-jie,WU Cha-cha,et al.Study on the fractures related with coal field f ire area in Wuda coal field,Inner Mongolia[J].Journal of China Coal Society,2009,34(8):1009-1014.
• [6] 邓军,李贝,王凯,等。中国煤火灾害防治技术研究现状及展望[J].煤炭科学技术,2016,44(10):1-7,101.DENG Jun,LI Bei,WANG Kai,et al.Research status and prospect of coal fire disaster prevention technology in China[J].Coal Science and Technology,2016,44(10):1-7,101.
• [7] 张辛亥,白亚娥,李亚清,等。煤升温氧化动力学阶段性规律[J].西安科技大学学报,2017,37(4):474-478.ZHANG Xin-hai,BAI Ya-e,LI Ya-qing,et al.Kinetics and segmentation law of coal oxidation at elevated temperature[J].Journal of Xi’an University of Science and Technology,2017,37(4):474-478.
• [8] 屈丽娜,刘星魁,张红元.煤自燃阶段动力学参数及特征温度点的实验研究[J].西安科技大学学报,2015,35(5):597-601.QU Li-na,LIU Xing-kui,ZHANG Hong-yuan.The experimental study of stage characteristic parameters and temperature on the coal spontaneous combustion[J].Journal of Xi’an University of Science and Technology,2015,35(5):597-601.
• [9] 赵婧昱,张嬿妮,宋佳佳,等.促进1/3焦煤氧化的临界参数分析[J].西安科技大学学报,2018,38(4):592-597.ZHAO Jing-yu,ZHANG Yan-ni,SONG Jia-jia,et al.Analysis of critical parameters of 1/3 coking coal during oxidized promotion period[J].Journal of Xi’an University of Science and Technology,2018,38(4):592-597.
• [10] 何启林,王德明.煤的氧化和热解反应的动力学研究[J].北京科技大学学报,2006,28(1):1-5.HE Qi-lin,WANG De-ming.Kinetics of oxidation and thermal degradation reaction of coal[J].Journal of University of Science and Technology Beijing,2006,28(1):1-5.
• [11] YANG Fu-qiang,LAI Yong.Determination of the influence of pyrite on coal spontaneous combustion by thermodynamics analysis[J].Process Safety and Environmental Protection,2019,129(9):163-167.
• [12] 杨妮,卿山,王华,等.煤粉在富氧气氛下燃烧反应动力学的实验研究[J].过程工程学报,2013,13(6):974-979.YANG Ni,QING Shan,WANG Hua,et al.Experimental study on combustion kinetics of pulverized coals under Mixed O2/CO2 atmosphere[J].Chinese Journal of Process Engineering,2013,13(6):974-979.
• [13] 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 Cun-bao,ZHANG Xun,et al.Soaking on coal oxidation activation energy and thermal effect[J].Journal of China Coal Society,2018,43(9):2518-2524.
• [14] 张辛亥,张天赐,王玥,等.不同氧浓度和温度下侏罗纪煤氧化动力学参数规律[J].西安科技大学学报,2019,39(4):564-570.ZHANG Xin-hai,ZHANG Tian-ci,WANG Yue,et al.Oxidation kinetic parameters of Jurassic coal under different oxygen concentrations and temperatures[J].Journal of Xi’an University of Science and Technology,2019,39(4):564-570.
• [15] ?atava V.Mechanism and kinetics from non-isothermal TG traces[J].Thermochimica Acta,1971,2(5):423-428.
• [16] 邓军,李贝,肖旸,等.基于热重-傅里叶红外光谱联用的煤矸石自燃特性及微观表征[J].西安科技大学学报,2017,37(1):1-6.DENG Jun,LI Bei,XIAO Yang,et al.Spontaneous combustion characteristics and microscopic characterization of coal gangue based on thermal-heavy-Fourier J.R.Cole External spectra[J].Journal of Xi’an University of Science and Technology,2017,37(1):1-6.
• [17] 梁栋,王云鹤,王进,等.升温速率与煤氧化特征关系的实验研究[J].煤炭科学技术,2007,35(3):76-78.LIANG Dong,WANG Yun-he,WANG Jin,et al.Test and research on relationship between temperature rising rate and coal oxidized features[J].Coal Science and Technology,2007,35(3):76-78.
• [18] 张辛亥,徐精彩,邓军,等.煤的耗氧速度及其影响因素恒温实验研究[ J].西安科技学院学报,2002,22(3):243-246.ZHANG Xin-hai,XU Jing-cai,DENG Jun,et al.Rate of oxygen consumption and the influence factors of coal oxidation with constant temperature experiment[J].Journal of Xi’an University of Science and Technology,2002,22(3):243-246.
• [19] 徐精彩,张辛亥,文虎,等.煤氧复合过程及放热强度测算方法[J].中国矿业大学学报,2000,29(3):253-256.XU Jing-cai,ZHANG Xin-hai,WEN Hu,et al.Procedure of reaction between coal and oxygen at low temperature and calculation of its heat emitting intensity[J].Journal of China University of Mining and Technology,2000,29(3):253-256.
• [20] 胡荣祖.热分析动力学(第2版)[M].科学出版社,2008.