[1]邓 军,邓 寅,张玉涛,等.含水率对煤二次氧化自燃特性影响的实验研究[J].西安科技大学学报,2016,(04):451-456.[doi:10.13800/j.cnki.xakjdxxb.2016.0401]
 DENG Jun,DENG Yin,ZHANG Yu-tao,et al.Experimental research on coal sample secondary oxidation and spontaneous combustion properties with moisture contents[J].Journal of Xi'an University of Science and Technology,2016,(04):451-456.[doi:10.13800/j.cnki.xakjdxxb.2016.0401]
点击复制

含水率对煤二次氧化自燃特性影响的实验研究(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年04期
页码:
451-456
栏目:
出版日期:
2016-08-30

文章信息/Info

Title:
Experimental research on coal sample secondary oxidation and spontaneous combustion properties with moisture contents
文章编号:
1672-9315(2016)04-0451-06
作者:
邓 军12邓 寅12张玉涛12张嬿妮12
1.教育部 西部矿井开采及灾害防治重点实验室,陕西 西安 710054;
2.西安科技大学 安全科学与工程学院,陕西 西安 710054
Author(s):
DENG Jun12DENG Yin12ZHANG Yu-tao12ZHANG Yan-ni12
1.Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054,China;
2.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
特性参数 氧化活性 外在水分 孔隙结构
Keywords:
characteristic parameters oxidized activity external moisture content pore structure
分类号:
TD 75
DOI:
10.13800/j.cnki.xakjdxxb.2016.0401
文献标志码:
A
摘要:
为研究不同含水率煤二次氧化时的自燃特性,使用1/3焦煤为研究对象,通过物理吸附、解析实验测试水分对煤空隙结构的影响,采用程序升温实验测试不同含水率煤初次、二次氧化自燃特征参数。研究表明:初次氧化后煤样孔结构主要以中孔为主,其孔体积和比表面积随着含水率的增加而增大; 在前期,原煤样产生的CO气体浓度大于不同含水率的水浸煤样,与CO2变化趋势相反; 二次氧化煤样的CO,CO2气体浓度和放热强度处于初次氧化原煤样和不同含水率煤样之间,从而表现出不同含水率煤样在初次氧化后,其氧化活性大于原煤样,小于初次不同含水率煤样的氧化活性。为避免水分对煤自燃的影响,应加强对煤在水分的条件下发生初次氧化后煤二次氧化自燃的检测和预防。
Abstract:
In order to research on spontaneous combustion properties of secondary oxidation of coal sample after the coal initial oxidation with different moisture contents,physical adsorption experiments were carried out to research space structure of oxidized coal,temperature-programing experiments were carried out to study the spontaneous combustion characteristic parameters of initial and secondary oxidation of coal sample with 1/3 coking coal.It was found that after the coal initial oxidation,which mesoporous was oriented,and with the increase of moisture contents,both the total pore volumes and specific space area were gradually increased,as the result,CO concentration was greater than the different moisture contents' coal samples,as opposed to CO2 concentration in the earlier stage of the oxidized coal samples.The oxidized coal samples' heat releasing intensity and CO,CO2 concentration were between the initial coal and the initial coal with different moisture contents,which made clear that the oxidized coal's oxidability was higher than the initial coal,and lower than the initial coal of different moisture contents.In order to avoid the effect of moisture on spontaneous combustion of coal,the detect and prevention of the second oxidized coal spontaneous combustion after the initial oxidation under the different moisture contents should be strengthened.

参考文献/References:

[1] 朱银惠.煤化学[M].北京:化学工业出版社,2007. ZHU Yin-hui.Coal chemistry[M].Beijing:Chemical Industry Press,2007.
[2] 邓 军,赵婧昱,张嬿妮.陕西侏罗纪煤二次氧化自燃特性试验研究[J].中国安全科学学报,2014,24(1):1-7. DENG Jun,ZHAO Jing-yu,ZHANG Yan-ni.Experimental study on spontaneous combustion characteristics of secondary oxidation of Jurassic coal[J].China Safety Science Journal,2014,24(1):1-7.
[3] 文 虎,姜 华,翟小伟,等.煤二次氧化气体特征实验研究[J].煤矿安全,2013,44(9):38-40. WEN Hu,JIANG Hua,ZHAI Xiao-wei,et al.Experimental study on gas characteristics of coal secondary oxidation[J].Safety in Coal Mines,2013,44(9):38-40.
[4] Pinto F,Gulyurtlu I,Lobol S,et al.Effect of coal pre-treatment with swelling solvents on coal liquefaction[J].Fuel,1999,78(6):629-634.
[5] Reich M H,Snook I K,Wagenfeld H K.A fractal interpretation of the effect of drying on the pore structure of Victorian brown coal[J].1992,71(6):669-672.
[6] 李树刚,赵鹏翔,潘宏宇,等.不同含水量对煤吸附甲烷的影响[J].西安科技大学学报,2011,31(4):379-387. LI Shu-gang,ZHAO Peng-xiang,PAN Hong-yu,et al.Effect of moisture on adsorption methane on coal[J].Journal of Xi'an University of Science and Technology,2011,31(4):379-387.
[7] 田永东,李 宁.煤对甲烷吸附能力的影响因素[J].西安科技大学学报,2007,27(2):247-250. TIAN Yong-dong,LI Ning.Affecting factors of the coal adsorbing methane capability[J].Journal of Xi'an University of Science and Technology,2007,27(2):247-250.
[8] 徐龙君,鲜学福,刘成伦,等.突出区煤的孔隙结构特征研究[J].矿业安全与环保,1999,26(2):25-27. XU Long-jun,XIAN Xue-fu,LIU Cheng-lun,et al.Experimental study on pore structure properties of outburst zone coal[J].Mining Safety & Environmental Protection,1999,26(2):25-27.
[9] Saurabh B,Pradeep K.The effect of moisture condensation on the spontaneous combustibility of coal[J].Fuel,1996,75(13):1 523-1 532.
[10]白金峰,王 勇,胡浩权,等.溶胀对扎赉诺尔褐煤热解及液化性能的影响[J].煤炭转化,2000,23(4):50-54. BAI Jin-feng,WANG Yong,HU Hao-quan,et al.Effect on swelling pretreatment on pyrolysis and liquefaction characteristics of Zalainuer lignite[J].Coal Conversion,2000,23(4):50-54.
[11]何启林,王德明.煤水分含量对煤吸氧量与放热量影响的测定[J].中国矿业大学学报,2005,34(3):358-362. HE Qi-lin,WANG De-ming.Influence of moisture on absorbed oxygen and released heat of coal[J].Journal of China University of Mining & Technology,2005,34(3):358-362.
[12]邓 军,刘文永,翟小伟,等.水分对孟巴矿煤氧化自燃特性影响的实验研究[J].煤矿安全,2011,42(11):15-19. DENG Jun,LIU Wen-yong,ZHAI Xiao-wei,et al.Research on the effects of moisture on oxidation and spontaneous combustion properties of Mengba coal mine[J].Safety in Coal Mines,2011,42(11):15-19.
[13]刘文永,金永飞,邓 军,等.水分对孟巴矿煤特征温度影响的实验研究[J].矿业安全与环保,2013,40(4):1-3. LIU Wen-yong,JIN Yong-fei,DENG Jun,et al.Experimental study on influence of moisture on coal's characteristic temperature in Mengba mine.Mining Safety & Environmental Protection,2013,40(4):1-3.
[14]GB474-2008,煤样的制备方法[S].北京:中国标准出版社,2009. GB474-2008,Method for the preparation of coal sample[S].Beijing:China standard press,2009.
[15]GB/T 23561.6-2009,煤和岩石物理力学性质测定方法[S].北京:中国标准出版社,2009. GB/T 23561.6-2009,Methods for determining the ph-ysical and mechanical properties of coal and rock-part[S].Beijing:China standard press,2009.
[16]邓 军,文 虎,徐精彩.煤自然发火预测理论及技术[M].西安:陕西科学技术出版社,2001. DENG Jun,WEN Hu,XU Jing-cai.Forecasting coal spontaneous combustion theory and technology[M].Xi'an:Shaanxi Science and Technique Prss,2001.
[17]Whiticar M J.geochemical perspective of natural gas and atmospheric methane[J].Organic Geochemistry,1990,16(1/3):531-547.
[18]王继仁,邓汉忠.煤自燃生成一氧化碳和水的反应机理研究[J].计算机与运用化学,2008,25(8):935-940. WANG Ji-ren,DENG Han-zhong.Coal spontaneous combustion producing carbon monoxide and water reaction mechanism research[J].Computers and Applied Chemistry,2008,25(8):935-940.
[19]景兴鹏,王亚超,王伟峰,等.煤层自燃模拟试验[J].煤田地质与勘探,2009,37(4):15-18. JING Xing-peng,WANG Ya-chao,WANG Wei-feng,et al.An experimental research on coal bed spontaneous combustion simulation[J].Coal Geology & Exploration,2009,37(4):15-18.
[20]徐精彩.煤自燃危险区域判定理论[M].北京:煤炭工业出版社,2001. XU Jing-cai.Theory of coal spontaneous combustion zone[M].Beijing:Coal Industry Press,2001.

备注/Memo

备注/Memo:
基金项目:国家自然科学基金(51134019); 国家自然科学青年基金(51404192); 中国博士后科学基金(2015T81043,2014M552555 XB); 陕西省自然科学基金(2015JQ5174); 陕西省教育厅基金(14jk1476)
通讯作者:邓 军(1970-),男,四川大竹人,教授,博士生导师,E-mail:693167478.com
更新日期/Last Update: 2016-07-15