[1]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,(01):1-6.[doi:10.13800/j.cnki.xakjdxxb.2017.0101]
 DENG Jun,LI Bei,XIAO Yang,et al.Spontaneous combustion characteristics and micro characterization of coal gangue based on thermogravimetry- fourier tromsform infrared spectrometer[J].Journal of Xi'an University of Science and Technology,2017,(01):1-6.[doi:10.13800/j.cnki.xakjdxxb.2017.0101]
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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(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2017年01期
页码:
1-6
栏目:
出版日期:
2017-01-30

文章信息/Info

Title:
Spontaneous combustion characteristics and micro characterization of coal gangue based on thermogravimetry- fourier tromsform infrared spectrometer
文章编号:
1672-9315(2017)01-0001-06
作者:
邓 军12李 贝1肖 旸12马 砺3徐启铭3
1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.教育部 西部矿井开采及灾害防治重点实验室, 陕西 西安 710054; 3.台湾云林科技大学 安全、健康与环境工程系,台湾 云林 64002
Author(s):
DENG Jun 12LI Bei1XIAO Yang12MA Li3XU Qi-ming3
1 .College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054 ,China; 2 .Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054 ,China; 3 .Department of Safety,Health,and Environmental Engineering,Yunlin University of Science and Technology,Yunlin 64002 ,China
关键词:
煤矸石 自燃 程序升温 热重-傅里叶红外光谱
Keywords:
Key words:coal gangue spontaneous combustion temperature programming TG-FTIR
分类号:
TD 75
DOI:
10.13800/j.cnki.xakjdxxb.2017.0101
文献标志码:
A
摘要:
煤矸石自燃造成严重的环境和生态问题,为揭示煤矸石自燃宏观特性及微观结构之间的关联性,采用热重-傅里叶红外光谱(TG/FTIR)联用技术及自燃程序升温实验,系统研究了煤矸石自燃氧化过程失重率、气体产生率和官能团变化规律及自燃特性。结果表明,煤矸石中存在次甲基、含氧环烷、醚键等桥键和缩合芳环等物质,自燃氧化过程总失重率 30.30%.得到了煤矸石自燃过程中7个特征温度,气体脱附、氧化裂解、燃烧和热活化及相变阶段的失重率分别为 1.05%,3.27%,20.36%和5.31%.计算得到煤矸石燃料比为 0.88,综合燃烧特性指数 S 为 32.34×10-11%2·min-2·K-3,说明试样挥发分析出速率快、极易着火燃烧、燃尽性能好,具有较高的自燃氧化及着火燃烧特性。
Abstract:
Abstract:Spontaneous combustion of coal gangue(CG)causes serious environmental and ecological problems.The oxidation characteristics of coal gangue,such as mass loss rate,gas production rate and functional group change were studied using thermogravimetry-fourier transform infrared spectrometer(TG-FTIR)technique and temperature programming experiment.FTIR spectrums indicated that coal gangue contained analogous hydroxyl,aliphatic,functional group,and aromatic compounds.Meanwhile,the results showed that the total weight loss ratio of CG was about 30 . 30 % in the oxidation process; the CG spontaneous combustion process was divided into four phases,the weight loss at each stage was 1 . 05 %, 3 . 27 %, 20 . 36 %,and 5 . 31 %,respectively.The calculated fuel ratio of CG was 0 . 88 and the integrated combustion characteristic index( S )was 32 . 34 &# 215 ; 10 - 11 % 2 ·min- 2 ·K- 3 ,which indicated that the sample of Wuhai CG has good oxidation and spontaneous combustion ignition property.The devolatilization rate is fast and the CG is easy to ignite.

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备注/Memo

备注/Memo:
基金项目:国家自然基金(51134019); 国家自然科学基金(51574193); 陕西省自然科学基金(2014JM7276); 陕西省工业科技攻关(2016GY-191) 通讯作者:邓 军(1970-),男,四川大竹人,教授,博导,E-mail:libei422@xust.edu.cn
更新日期/Last Update: 1900-01-01