|本期目录/Table of Contents|

[1]张嬿妮,刘春辉,舒盼,等.弱粘煤低温氧化活性基团与热效应的研究*[J].中国安全生产科学技术,2021,17(11):98-104.[doi:10.11731/j.issn.1673-193x.2021.11.015]
 ZHANG Yanni,LIU Chunhui,SHU Pan,et al.Study on low-temperature oxygen active groups and thermal effect of weakly caking coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(11):98-104.[doi:10.11731/j.issn.1673-193x.2021.11.015]
点击复制

弱粘煤低温氧化活性基团与热效应的研究*
分享到:

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年11期
页码:
98-104
栏目:
职业安全卫生管理与技术
出版日期:
2021-11-30

文章信息/Info

Title:
Study on low-temperature oxygen active groups and thermal effect of weakly caking coal
文章编号:
1673-193X(2021)-11-0098-07
作者:
张嬿妮刘春辉舒盼侯云超杨晶晶李乐乐
(1.西安科技大学 安全科学与工程学院,陕西 西安 710054;
2.国土资源部煤炭资源勘查与综合利用重点实验室,陕西 西安 710021;
3.西安科技大学 陕西煤炭火灾防治重点实验室,陕西 西安 710054)
Author(s):
ZHANG Yanni LIU Chunhui SHU Pan HOU Yunchao YANG Jingjing LI Lele
(1.College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China;
2.Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Land and Resources,Xi’an Shaanxi 710021,China;
3.Shaanxi Key Laboratory of Prevention and Control of Coal Fire,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China)
关键词:
热效应煤自燃红外光谱官能团活化能
Keywords:
thermal effect coal spontaneous combustion infrared spectrum functional groups activation energy
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2021.11.015
文献标志码:
A
摘要:
为研究煤氧化过程中活性基团的演变规律及热效应的变化特征,利用原位红外实验装置,实时测量煤升温过程中官能团的动态变化,数据处理得到弱粘煤红外波谱图,利用差减法对特征温度点下的红外光谱图进行处理,得到煤样的差示光谱,计算特征温度点下的红外结构参数;采用差示扫描量热仪,测量煤氧化过程中热流的变化,得到弱粘煤的热流曲线图,并对热流曲线进行阶段划分和氧化动力学计算。结果表明:弱粘煤中芳环数量比较少,环周围侧链较长,内部结构疏松,内部毛细管比较发达,内表面积较大,更容易发生自燃;整个氧化过程中羟基最为活跃,含氧官能团次之,其次是脂肪烃;红外参数计算结果HAL,I2整体呈减小趋势,I1,I3整体呈增大趋势;弱粘煤放热阶段的活化能值为25.12~61.26 kJ/mol,并随着升温速率的增大而减小,与此阶段放热量随升温速率的增大而增大相对应。
Abstract:
In order to study the evolution laws of active groups and the change characteristics of thermal effect during the coal oxidation,the dynamic change of functional groups in the process of coal heating was measured by using the in-situ infrared experimental device,and the infrared spectrum diagram of weakly caking coal was obtained though the data processing.Moreover,the differential spectra of coal samples was obtained through processing the infrared spectrum diagram at the characteristic temperature point by using the subtraction method,and the infrared structure parameters at the characteristic temperature points were calculated.The differential scanning calorimeter was used to measure the change of heat flow during the coal oxidation process,then the heat flow curves of weakly caking coal was obtained,and the stage division and oxidation kinetics calculation were conducted on the heat flow curves.The results showed that the number of aromatic rings in weakly caking coal was relatively smaller,and the side chain around the ring was longer.Meanwhile,the internal structure was loose,the internal capillary was relatively developed,the internal surface area was larger,and the spontaneous combustion was more likely to happen.The hydroxyl group was the most active during the entire oxidation process,followed by oxygen-containing functional groups and aliphatic hydrocarbons.The infrared parameter calculation results HAL,I2 presented an overall decreasing trend,and I1 ,I3 overall presented an increasing trend.The activation energy of weakly cohesive coal in the exothermic stage was 25.12~61.26 kJ/mol,and decreased with the increase of heating rate,corresponding to the increase of heat release at this stage with the increase of heating rate.

参考文献/References:

[1]GREEN U,AIZENSHTAT Z,METZGER L,et al.Field and laboratory simulation study of hot spots in stockpiled bituminous coal[J].Energy Fuels,2012,26(12):7230-7235.
[2]赵兴国,戴广龙.氧化煤自燃特性实验研究[J].中国安全生产科学技术,2020,16(6):55-60. ZHAO Xingguo,DAI Guanglong.Experimental study on spontaneous combustion characteristics of oxidized coal [J].Journal of Safety Science and Technology,2020,16(6):55-60.
[3]张艺漫.燃烧条件对劣质无烟煤氧化反应过程及特征温度影响的研究[D].长沙:长沙理工大学,2013:1-5.
[4]刘琬玥,刘钦甫,刘霖松,等.哈尔乌素矿区6号煤FTIR特征[J].中国矿业,2018,27(9):168-173. LIU Wanyue,LIU Qinpu,LIU Linsong,et al.FTIR characteristics of No.6 coal from Haerwusu mine[J].China Mining Magazine,2018,27(9):168-173.
[5]谭波,徐斌,胡明明,等.不同变质程度煤在氧化过程中的表面官能团红外光谱定量分析[J].中南大学学报(自然科学版),2019,50(11):2886-2895. TAN Bo,XU Bin,HU Mingming,et al.FTIR quantitative analysis of surface functional groups in the oxidation process of coal samples with different metamorphic levels[J].Journal of Central South University (Science and Technology),2019,50(11):2886-2895.
[6]万有吉,曹占清,张杉,等.不同煤种低温氧化下的官能团分布规律[J].煤炭与化工,2017,40(2):23-25. WAN Youji,CAO Zhanqing,ZHANG Shan,et al.Distribution regulation of functional groups under low temperature of different coals[J].Coal and Chemical Industry,2017,40(2):23-25.
[7]郭文杰.基于DSC的煤自燃倾向性鉴定实验研究[D].廊坊:华北科技学院,2017.
[8]陈良舟,白成武,戚绪尧,等.基于微量热技术的白皎无烟煤氧化放热特性研究[J].煤炭技术,2018,37(7):305-307. CHEN Liangzhou,BAI Chengwu,QI Xuyao,et al.Study on exothermic characteristics of oxidation process of Baijiao anthracite based on microcalorimetry technology[J].Coal Technology,2018,37(7):305-307.
[9]高盛.煤氧化过程热效应及其官能团演变规律实验研究[D].西安:西安科技大学,2018.
[10]陈龙.煤低温氧化热效应影响规律研究[D].西安:西安科技大学,2019.
[11]谢克昌.煤的结构与反应性[M].北京:科学出版社,2002.
[12]JIANG J Y,YANG W H,CHENG Y P,et al.Molecular structure characterization of middle-high rank coal via XRD,Raman and FTIR spectroscopy:Implications for coalification[J].Fuel,239:559-572.
[13]张嬿妮,刘春辉,宋佳佳,等.长焰煤低温氧化主要官能团迁移规律研究[J].煤炭科学技术,2020,48(3):188-196. ZHANG Yanni,LIU Chunhui,SONG Jiajia,et al.Study on transfer law of main functional groups in low temperature oxidation of long flame coal[J].Coal Science and Technology,2020,48(3):188-196.
[14]ZHU H Q,ZHAO H R,WEI H Y,et al.Investigation into the thermal behavior and FTIR micro-characteristics of re- oxidation coal[J].Combustion and Flame,2020,216:354-368.
[15]赵云刚,李美芬,曾凡桂,等.伊敏褐煤不同化学组分结构特征的红外光谱研究[J].煤炭学报,2018,43(2):546-554. ZHAO Yungang,LI Meifen,ZENG Fangui,et al.FTIR study of structural characteristics of different chemical components from Yimin lignite[J].Journal of China Coal Society,2018,43(2):546-554.
[16]周沛然.煤低温氧化结构变化的红外光谱研究[J].煤炭转化,2014,37(1):15-18. ZHOU Peiran.Study on changing of coal structures in low temperature oxidization by infrared spectrum method [J].Coal Conversion,2014,37(1):15-18.
[17]韩峰,张衍国,蒙爱红,等.云南褐煤结构的FTIR分析[J].煤炭学报,2014,39(11):2293-2299. HAN Feng,ZHANG Yanguo,MENG Aihong,et al.FTIR analysis of Yunnan lignite[J].Journal of China Coal Society,2014,39(11):2293-2299.
[18]黄遥.煤自燃活性官能团萃取及其氧化放热特性研究[D].西安:西安科技大学,2018.
[19]QI G Sh,WANG D M,ZHENG K M,et al.Kinetics characteristics of coal low-temperature oxidation in oxygen-depleted air[J].Journal of Loss Prevention in the Process Industries,2015,35:224-231.

相似文献/References:

[1]邓军,杨一帆,翟小伟.基于层次分析法的矿井煤自燃危险性模糊评价[J].中国安全生产科学技术,2014,10(4):120.[doi:10.11731/j.issn.1673-193x.2014.04.021]
 DENG Jun,YANG Yi fan,ZHAI Xiao wei.Fuzzy evaluation on risk of coal spontaneous combustion based on AHP[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(11):120.[doi:10.11731/j.issn.1673-193x.2014.04.021]
[2]王雪峰,孙艳秋,李丽,等.双外推法对煤氧化燃烧的动力学特性研究[J].中国安全生产科学技术,2014,10(9):72.[doi:10.11731/j.issn.1673-193x.2014.09.012]
 WANG Xue-feng,SUN Yan-qiu,LI Li,et al.Research on the dynamic characteristics of coal combustion in double extrapolation[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(11):72.[doi:10.11731/j.issn.1673-193x.2014.09.012]
[3]郝朝瑜,王继仁,黄戈,等.基于惰化降温耦合作用的采空区低温CO2注入位置研究[J].中国安全生产科学技术,2015,11(9):17.[doi:10.11731/j.issn.1673-193x.2015.09.003]
 HAO Chao-yu,WANG Ji-ren,HUANG Ge,et al.Study on inject position of low temperature CO2 in gob based on coupling effect of inerting cooling[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(11):17.[doi:10.11731/j.issn.1673-193x.2015.09.003]
[4]鲁义,陈立,邹芳芳,等.防控高温煤岩裂隙的膏体泡沫研制及应用[J].中国安全生产科学技术,2017,13(4):70.[doi:10.11731/j.issn.1673-193x.2017.04.012]
 LU Yi,CHEN Li,ZOU Fangfang,et al.Development and application of paste foam for prevention and control of fracture in high temperature coal and rock[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):70.[doi:10.11731/j.issn.1673-193x.2017.04.012]
[5]王志军,等.微波间断加载作用下煤中瓦斯解吸响应特征实验研究[J].中国安全生产科学技术,2017,13(4):76.[doi:10.11731/j.issn.1673-193x.2017.04.013]
 WANG Zhijun,,et al.Experimental study on response characteristics of gas desorption in coal under effect of discontinuous microwave loading[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):76.[doi:10.11731/j.issn.1673-193x.2017.04.013]
[6]凡永鹏,穆晓刚,师超.“U+I”型采煤工作面瓦斯抽采与浮煤自燃耦合研究[J].中国安全生产科学技术,2017,13(5):96.[doi:10.11731/j.issn.1673-193x.2017.05.016]
 FAN Yongpeng,MU Xiaogang,SHI Chao.Study on coupling between gas drainage and spontaneous combustion of float coal on "U+I" type coal mining working face[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):96.[doi:10.11731/j.issn.1673-193x.2017.05.016]
[7]鲁义,王涛,田兆君,等.水泥基泡沫形成机理及抑制煤堆自燃试验研究[J].中国安全生产科学技术,2017,13(7):87.[doi:10.11731/j.issn.1673-193x.2017.07.014]
 LU Yi,WANG Tao,TIAN Zhaojun,et al.Test study on formation mechanism of cement-based foam and inhibition for spontaneous combustion of coal pile[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):87.[doi:10.11731/j.issn.1673-193x.2017.07.014]
[8]屈丽娜.热重实验条件下不同氧气浓度对煤自燃反应能级的实验研究[J].中国安全生产科学技术,2017,13(8):134.[doi:10.11731/j.issn.1673-193x.2017.08.021]
 QU Lina,LIU Qi.Experimental study on influence of different oxygen concentrations on reaction energy level of coal spontaneous combustion under thermogravimetric experimental conditions[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):134.[doi:10.11731/j.issn.1673-193x.2017.08.021]
[9]王福生,艾晴雪,赵雪琪.无机磷化合物对煤自燃的阻化作用研究[J].中国安全生产科学技术,2017,13(9):101.[doi:10.11731/j.issn.1673-193x.2017.09.016]
 WANG Fusheng,AI Qingxue,ZHAO Xueqi.Study on inhibition effect of inorganic phosphorus compounds on spontaneous combustion of coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):101.[doi:10.11731/j.issn.1673-193x.2017.09.016]
[10]于红,崔学锋,张瑞林.微波辐照作用对颗粒煤瓦斯解吸特性影响实验研究[J].中国安全生产科学技术,2017,13(10):25.[doi:10.11731/j.issn.1673-193x.2017.10.004]
 YU Hong,CUI Xuefeng,ZHANG Ruilin.Experimental research on effect of microwave radiation on gas desorption characteristics of coal particle[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(11):25.[doi:10.11731/j.issn.1673-193x.2017.10.004]
[11]陈龙,张嬿妮.氧浓度对煤低温氧化热效应影响规律研究[J].中国安全生产科学技术,2020,16(6):49.[doi:10.11731/j.issn.1673-193x.2020.06.008]
 CHEN Long,ZHANG Yanni.Study on influence laws of oxygen concentration on thermal effect of coal low-temperature oxidation[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(11):49.[doi:10.11731/j.issn.1673-193x.2020.06.008]

备注/Memo

备注/Memo:
收稿日期: 2020-11-26
* 基金项目: 国家重点研发计划项目(2018YFC0807900);国家自然科学基金项目(51674191)
作者简介: 张嬿妮,博士,教授,主要研究方向为煤自燃机理及灾害防治。
通信作者: 刘春辉,硕士研究生,主要研究方向为煤自燃机理及灾害防治。
更新日期/Last Update: 2021-12-08