工程科学学报，第40卷，第3期：330-339,2018年3月 Chinese Journal of Engineering,Vol.40,No.3:330-339,March 2018 DOI:10.13374/j.issn2095-9389.2018.03.009:http://journals.ustb.edu.cn 热溶煤的燃烧特性 赵骏，左海滨区，龙思阳，王静松，薛庆国 北京科技大学钢铁治金新技术国家重点实验室，北京100083 ☒通信作者，E-mail:zuohaibine@ustb.edu.cn 摘要低阶煤的高值化利用对拓宽能源途径，提高能源效率和解决环境问题具有重要意义.以、甲基吡咯烷酮为有机溶 剂，对4种低阶煤进行热萃取，获得低灰分、高挥发分的热溶煤产物.通过热重分析研究了热溶煤的燃烧特性，并利用拉曼光 谱分析，对比了原煤与热溶煤碳结构的变化规律.结果表明：与原煤相比，热溶煤的灰分含量明显降低，挥发分含量增高，固定 碳含量减少，热值增大.其中KL、GD和ZS3种热溶煤的H/C原子比大于原煤，XB的热溶煤小于原煤.KL、GD和ZS3种热 溶煤的峰强度(I1)和峰面积(AoA)的比值大于相应的原煤，其有序化程度减小，结构缺陷增多，相应的其热溶煤的燃烧 反应性增大.而XB热溶煤的ID1和A。A。的值小于相应的原煤，有序化程度增大，燃烧反应性降低. 关键词低阶煤：热溶煤：燃烧特性：热萃取；拉曼光谱 分类号TQ531.5 Combustion characteristics of thermal dissolution coal ZHAO Jun,ZUO Hai-bin,LONG Si-yang,WANG Jing-song,XUE Qing-guo State Key Laboratory of Advanced Metallurgy,University of Sciences and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:zuohaibin@ustb.edu.cn ABSTRACT Coal is one of the most important energy sources in our society.However,there have been increasing environment con- cerns regarding coal utilization.The high-value application of low-rank coal has an important significance for broadening the energy pathways,improving energy efficiency,and solving environmental problems.In this study,thermal dissolution coals (TDCs),which have low ash and high volatility,were extracted from four types of low-rank coal by N-2-methyl-2-pyrrolidinone (NMP).The combus- tion characteristics of TDCs were investigated by thermogravimetric analysis,and the structure variation law of raw coals and TDCs were compared using Raman spectra.The results show that the ash content and fixed carbon of TDCs significantly decrease,whereas the vol- atile content and high heating valve increase.The H/C atomic ratios of KL,GD,and ZS TDCs are higher than those of raw coals, whereas XB has a lower H/C atomic ratio than that of raw coal.The ratio of peak intensity (p/)and peak area (Ap/Ac)values of KL,GD,and ZS TDCs are greater than those of raw coals,indicating that as the ordering degrees of these TDCs decrease,the struc- ture deficiencies and combustion reactivity increase.In contrast,XB coal showed opposite results. KEY WORDS low-rank coal:thermal dissolution coal:combustion characteristic:thermal extraction:Raman spectrum 煤炭资源是世界能源消费的主体，也是钢铁生 用-网.将低阶煤用于高炉生产或其他有效途径，不 产不可或缺的燃料.钢铁生产需要优质的焦煤和适 仅可以拓宽资源选择途径，而且能够增加经济效益. 宜的喷吹用煤，但优质煤炭资源往往储量少且价格 采用溶剂热溶萃取处理是劣质煤利用的有效方法之 昂贵，同时大量价格低廉的低阶煤不能得到有效利 一.近年来，高温萃取低阶煤成为研究热 收稿日期：2017-08-11 基金项目：国家自然科学基金资助项目(51574023)：国家重点研发计划资助项目(2016YFB0600701)工程科学学报，第 40 卷，第 3 期: 330--339，2018 年 3 月 Chinese Journal of Engineering，Vol． 40，No． 3: 330--339，March 2018 DOI: 10． 13374 /j． issn2095--9389． 2018． 03． 009; http: / /journals． ustb． edu． cn 热溶煤的燃烧特性 赵 骏，左海滨，龙思阳，王静松，薛庆国 北京科技大学钢铁冶金新技术国家重点实验室，北京 100083 通信作者，E-mail: zuohaibin@ ustb． edu． cn 摘 要 低阶煤的高值化利用对拓宽能源途径，提高能源效率和解决环境问题具有重要意义． 以 N-甲基吡咯烷酮为有机溶 剂，对 4 种低阶煤进行热萃取，获得低灰分、高挥发分的热溶煤产物． 通过热重分析研究了热溶煤的燃烧特性，并利用拉曼光 谱分析，对比了原煤与热溶煤碳结构的变化规律． 结果表明: 与原煤相比，热溶煤的灰分含量明显降低，挥发分含量增高，固定 碳含量减少，热值增大． 其中 KL、GD 和 ZS 3 种热溶煤的 H/C 原子比大于原煤，XB 的热溶煤小于原煤． KL、GD 和 ZS 3 种热 溶煤的峰强度( ID /IG ) 和峰面积( AD /AG ) 的比值大于相应的原煤，其有序化程度减小，结构缺陷增多，相应的其热溶煤的燃烧 反应性增大． 而 XB 热溶煤的 ID /IG和 AD /AG的值小于相应的原煤，有序化程度增大，燃烧反应性降低． 关键词 低阶煤; 热溶煤; 燃烧特性; 热萃取; 拉曼光谱 分类号 TQ531. 5 收稿日期: 2017--08--11 基金项目: 国家自然科学基金资助项目( 51574023) ; 国家重点研发计划资助项目( 2016YFB0600701) Combustion characteristics of thermal dissolution coal ZHAO Jun，ZUO Hai-bin ，LONG Si-yang，WANG Jing-song，XUE Qing-guo State Key Laboratory of Advanced Metallurgy，University of Sciences and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: zuohaibin@ ustb． edu． cn ABSTＲACT Coal is one of the most important energy sources in our society． However，there have been increasing environment con￾cerns regarding coal utilization． The high-value application of low-rank coal has an important significance for broadening the energy pathways，improving energy efficiency，and solving environmental problems． In this study，thermal dissolution coals ( TDCs) ，which have low ash and high volatility，were extracted from four types of low-rank coal by N-2-methyl-2-pyrrolidinone ( NMP) ． The combus￾tion characteristics of TDCs were investigated by thermogravimetric analysis，and the structure variation law of raw coals and TDCs were compared using Ｒaman spectra． The results show that the ash content and fixed carbon of TDCs significantly decrease，whereas the vol￾atile content and high heating valve increase． The H/C atomic ratios of KL，GD，and ZS TDCs are higher than those of raw coals， whereas XB has a lower H/C atomic ratio than that of raw coal． The ratio of peak intensity ( ID /IG ) and peak area ( AD /AG ) values of KL，GD，and ZS TDCs are greater than those of raw coals，indicating that as the ordering degrees of these TDCs decrease，the struc￾ture deficiencies and combustion reactivity increase． In contrast，XB coal showed opposite results． KEY WOＲDS low-rank coal; thermal dissolution coal; combustion characteristic; thermal extraction; Ｒaman spectrum 煤炭资源是世界能源消费的主体，也是钢铁生 产不可或缺的燃料． 钢铁生产需要优质的焦煤和适 宜的喷吹用煤，但优质煤炭资源往往储量少且价格 昂贵，同时大量价格低廉的低阶煤不能得到有效利 用［1--2］． 将低阶煤用于高炉生产或其他有效途径，不 仅可以拓宽资源选择途径，而且能够增加经济效益． 采用溶剂热溶萃取处理是劣质煤利用的有效方法之 一［3--5］． 近 年 来，高温萃取低阶煤成为研究热