卢国斌,张福革,郭晓阳
LU Guobin,ZHANG Fuge,GUO Xiaoyang

• 1:辽宁工程技术大学安全科学与工程学院

摘要(Abstract)：

为探究煤在贫氧条件下燃烧生成的链烃气体指标变化规律,选用官地煤矿8号煤为试验煤样,设计了不同贫氧环境下煤的自燃程序升温试验,利用气相色谱仪得到初始氧气体积分数φ(O_2)分别为21%、10%、7%时的链烃体积分数随温度的变化规律,并通过复合气体指标进一步分析贫氧程度对链烃气体的影响。试验结果表明:贫氧程度的增加使烷烃体积分数的上升趋势出现"迟滞"现象,在贫氧环境中用烷烃气体指标预测煤自燃灾害不可靠;烯烃气体指标可以对贫氧条件下煤自燃进行预测,当烯烃体积分数达到峰值时,煤自燃进入剧烈燃烧阶段;链烷比波动性较大,C_2H_6/CH_4的波动性随着贫氧程度的增加逐渐减弱,可以作为φ(O_2)为7%时预测煤自燃的依据;烯烷比随贫氧程度的增加而增大,可用于在贫氧条件下预测煤自燃灾害。
In order to investigate the formation mechanism of chain hydrocarbons during coal spontaneous combustion under the conditions of oxygen lean,the No.8 coal from Guandi Coal Mine was selected as test coal sample.The temperature programmed test of coal spontaneous combustion under the conditions of lean oxygen was designed. The variation law of chain hydrocarbons using gas chromatograph was obtained when initial oxygen volume fraction φ(O_2) was 21%,10% and 7%.In addition,the influence of the oxygen-lean degree on the generation of chain hydrocarbons gases was analyzed by the composite gas index. Test results show that under the oxygen-lean condition,the increase of oxygen-lean degree will decrease the generation amount of alkane,while its rising trend will demonstrate a " delaying" phenomenon.It seems to be unreliable to forecast coal spontaneous combustion disaster.The prediction of coal spontaneous combustion can be carried out by using the specific gases of alkene if the volume fraction of olefin reaches its maximum value when the spontaneous combustion of coal enters the stage of intense combustion.The ratio of olefin/alkane is more fluctuant,and the ratio of C_2H_6/CH_4 decreases with the increase of oxygen-lean degree,which can be used as the basis for characterization the coal spontaneous combustion when φ(O_2) is 7%.While the ratio of olefin/alkane decreases with the increase of oxygen-lean degree,therefore it can forecast coal spontaneous combustion disaster.

关键词(KeyWords)： 贫氧;燃烧;链烃;标志气体;煤自燃
lean oxygen;combustion;chain hydrocarbons;significant gas;coal spontaneous combustion

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 卢国斌,张福革,郭晓阳
LU Guobin,ZHANG Fuge,GUO Xiaoyang

DOI: 10.13226/j.issn.1006-6772.2018.03.014

参考文献(References)：

• [1]王省身,张国枢.矿井火灾防治[M].徐州:中国矿业大学出版社,1990.
• [2]王德明.煤氧化动力学理论与应用[M].北京:科学出版社,2012.
• [3]张国枢,戴广龙.煤炭自燃理论与防治实践[M].北京:煤炭工业出版社,2002.
• [4]肖旸,王振平,马砺,等.煤自燃指标气体与特征温度的对应关系研究[J].煤炭科学技术,2008,36(6):47-51.XIAO Yang,WANG Zhenping,MA Li,et al.Research on correspondence relationship between coal spontaneous combustion index gas and feature temperature[J].Coal Science and Technology,2008,36(6):47-51.
• [5]梁运涛.煤炭自然发火预测预报的气体指标法[J].煤炭科学技术,2008,36(6):5-8.LIANG Yuntao.Gas index m ethod to predict coal spontaneous combustion[J].Coal Science and Technology,2008,36(6):5-8.
• [6]谭波,胡瑞丽,高鹏,等.煤自燃灾害气体指标的阶段特征实验研究[J].中国安全科学学报,2013,23(2):51-57.TAN Bo,HU Ruili,GAO Peng,et al.Temperature-programmed experimental study on stage characteristics of coal spontaneous combustion disaster gas indicators[J].China Safety Science Journal,2013,23(2):51-57.
• [7]YU Jianglong,TAHMASEBI Arash,HAN Yanna,et al.A review on water in low rank coals:The existence,interaction with coal structure and effects on coal utilization[J].Fuel Processing Technology,2013,106:9-20.
• [8]YANG Yunlong,JING Xiaoxia,LI Zhiqiang,et al.Effect of drying conditions on moisture readsorption performance of dewatered lignite[J].Drying Technology,2013,31:1430-1437.
• [9]朱令起,周心权,谢建国,等.自然发火标志气体实验分析及优化选择[J].采矿与安全工程学报,2008,25(4):440-448.ZHU Lingqi,ZHOU Xinquan,XIE Jianguo,et al.Analysis of indicator gas of spontaneous combustion and its optimal selection[J].Journal of Mining&Safety Engineering,2008,25(4):440-448.
• [10]邓军,李贝,李珍宝,等.预报煤自燃的气体指标优选试验研究[J].煤炭科学技术,2014,42(1):55-59,79.DENG Jun,LI Bei,LI Zhenbao,et al.Experiment study on gas indexes optimization for coal spontaneous combustion prediction[J].Coal Science and Technology,2014,42(1):55-59,79.
• [11]周西华,李昂,聂荣山,等.不同变质程度煤燃烧阶段链烃生成规律[J].煤炭学报,2016,41(7):1741-1746.ZHOU Xihua,LI Ang,NIE Rongshan,et al.Chain hydrocarbons formation law of different metamorphic grade coals at combustion phrase[J].Journal of China Coal Society,2016,41(7):1741-1746.
• [12]周西华,李昂,聂荣山,等.不同变质程度煤燃烧阶段碳氧化物生成规律[J].中国安全科学学报,2016,26(4):34-39.ZHOU Xihua,LI Ang,NIE Rongshan,et al.Carbon oxides formation law of different metamorphic degree coals at combustion phrase[J].China Safety Science Journal,2016,26(4):34-38.
• [13]周西华,郭晓阳,宋东平,等.多因素影响下的煤低温氧化特性试验研究[J].洁净煤技术,2016,22(6):82-87.ZHOU Xihua,GUO Xiaoyang,SONG Dongping,et al.Experimental research on coal low-temperature oxidation kinetics under multiple influencing factors[J].Clean Coal Technology,2016,22(6):82-87.
• [14]周西华,王成,李昂,等.褐煤燃烧阶段风量对指标气体的影响[J].洁净煤技术,2017,23(5):18-22,27.ZHOU Xihua,WANG Cheng,LI Ang,et al.Influence of air amount on index gas for lignite combustion[J].Clean Coal Technology,2017,23(5):18-22,27.
• [15]董宪伟,王福生,孟亚宁.不同煤种升温氧化过程中气体产物特征研究[J].中国安全生产科学技术,2014,10(3):48-53.DONG Xianwei,WANG Fusheng,MENG Yaning.Study on the characteristics of gas products in heating and oxidation process of different coal[J].Journal of Safety Science and Technology,2014,10(3):48-53.
• [16]秦红星,戴广龙,张树川,等.基于煤低温氧化试验下的标志气体优选及应用[J].煤炭科学技术,2015,43(6):65-70.QIN Hongxing,DAI Guanglong,ZHANG Shuchuan,et al.Optimal selection and application of mark gas based on coal low temperature oxidation test[J].Coal Science and Technology,2015,43(6):65-70.
• [17]金永飞,赵瑞元,邓军,等.煤自燃多参数预报指标试验研究[J].煤炭科学技术,2014,42(9):112-114,76.JIN Yongfei,ZHAO Ruiyuan,DENG Jun,et al.Experiment study on multi parameters prediction indexes of coal spontaneous combustion[J].Coal Science and Technology,2014,42(9):112-114,76.
• [18]周福宝,邵和,李金海,等.低O2含量条件下煤自燃产物生成规律的实验研究[J].中国矿业大学学报,2010,39(6):808-812.ZHOU Fubao,SHAO He,LI Jinhai,et al.Experimental research on combustion product formation during coal spontaneous combustion under reduced oxygen concentrations[J].Journal of China University of Minging&Technology,2010,39(6):808-812.
• [19]张晞,史波波,邵和,等.变氧浓度条件下崔家寨矿煤自燃特性的实验研究[J].湖南科技大学学报(自然科学版),2010,25(4):16-20.ZHANG Xi,SHI Bobo,SHAO He,et al.Experimental research on coal characteristic of spontaneous combustion under various oxygen concentrations of Cuijiazhai coal[J].Journal of Hunan University of Science and Technology(Natural Science Edition),2010,25(4):16-20.
• [20]曹凯,王德明.贫氧条件煤自燃产热特性试验研究[J].中国安全科学学报,2015,25(10):127-132.CAO Kai,WANG Deming.Experimental study on heat release characteristics of coal spontaneous combustion under oxygen depletion conditon[J].China Safety Science Journal,2015,25(10):127-132.