Specific properties and combustion characteristics of natural coke from adjacent areas of Jiangsu, Shandong, Henan and Anhui provinces

Authors

QIN Yunhu, Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou 221006, ChinaFollow
WANG Shuangmei, Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou 221006, China
ZHU Shifei, Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou 221006, China
WU Guoqiang, China National Administration of Coal Geology, Beijing 100038, China
QUAN Jutao, First Exploration Bureau, China National Administration of Coal Geology, Handan 056004, China
MAO Lixin, Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou 221006, China

Abstract

It is particularly important to improve resource utilization efficiency against the background of carbon peak and carbon neutrality, but the natural coke has not been paid enough attention for a long time. The natural coke is abundant in China and is often found in the mining of coal mines in neighboring areas of Shandong, Henan and Anhui provinces. Due to the intrusion of magmatic rock, the original coal seam is baked and transformed into natural coke. In this study, samples of natural coke from various areas were collected to study its macroscopic and microscopic characteristics. The industrial analysis, geochemical parameters, spontaneous combustion tendency and coke dust explosive were studied. At the same time, typical samples were selected to analyze the combustion characteristics by American TA2100 thermal analyzer. The results show that the macroscopic physical properties and maceral properties of natural coke are obviously different from those of coal. On the whole, there is no obvious boundary about the analysis indexes of natural coke and anthracite. The index of volatile yield and C/H values for natural coke and the residual coal in the same place is significantly decreased by the former, and greatly increased by the latter. The metamorphic degree of natural coke is generally reached or higher than that of anthracite, and it is not easy to spontaneous combustion with its coke dust non-explosive. The analysis of combustion characteristics shows that the natural coke sample has strong reactivity. Furthermore, the utilization direction of natural coke was discussed according to its characteristics, and there is value or potential in the production of briquette, ammonia synthesis, carbon materials, cement production and CO₂ geological storage.

Keywords

characteristic of natural coke, combustion characteristic, coal petrology, trace element

DOI

10.12363/issn.1001-1986.21.09.0501

Recommended Citation

QIN Yunhu, WANG Shuangmei, ZHU Shifei, et al. (2022) "Specific properties and combustion characteristics of natural coke from adjacent areas of Jiangsu, Shandong, Henan and Anhui provinces," Coal Geology & Exploration: Vol. 50: Iss. 5, Article 4.
DOI: 10.12363/issn.1001-1986.21.09.0501
Available at: https://cge.researchcommons.org/journal/vol50/iss5/4

Reference

[1] 许莉. 世界煤炭资源供需形势分析[J]. 中国煤炭地质,2012,24(6):70−72. XU Li. World coal resource supply and demand analysis[J]. Coal Geology of China,2012,24(6):70−72.

[2] 袁亮. 我国煤炭资源高效回收及节能战略研究[J]. 中国矿业大学学报(社会科学版),2018,20(1):3−12. YUAN Liang. Strategies of high efficiency recovery and energy saving for coal resources in China[J]. Journal of China University of Mining & Technology(Social Sciences),2018,20(1):3−12.

[3] 赵民,黄春慧,汤振清. 鲁西南主要煤田岩浆岩特征及对煤的影响[J]. 煤田地质与勘探,2000,28(2):10−13. ZHAO Min,HUANG Chunhui,TANG Zhenqing. Features of magmatite and influence on coal in main coalfields in southwestern Shandong[J]. Coal Geology & Exploration,2000,28(2):10−13.

[4] 李井坤,龚邦军,张洪军. 大兴井田火成岩侵入特点分析[J]. 煤炭技术,2006,25(7):128−130. LI Jingkun,GONG Bangjun,ZHANG Hongjun. Daxing well field fire stratified rock intrusive feature analysis[J]. Coal Technology,2006,25(7):128−130.

[5] 王绍清,张小梅,李雪崎,等. 热变煤特殊性质与其开发利用建议研究[J]. 煤炭科学技术,2021,49(6):179−188. WANG Shaoqing,ZHANG Xiaomei,LI Xueqi,et al. Study on specific properties of thermally altered coal and its utilization suggestions[J]. Coal Science and Technology,2021,49(6):179−188.

[6] JIANG Jingyu,CHENG Yuanping,WANG Lei,et al. Petrographic and geochemical effects of sill intrusions on coal and their implications for gas outbursts in the Wolonghu mine,Huaibei coalfield,China[J]. International Journal of Coal Geology,2011,88(1):55−66.

[7] YAO Yanbin,LIU Dameng. Effects of igneous intrusions on coal petrology,pore−fracture and coalbed methane characteristics in Hongyang,Handan and Huaibei coalfields,North China[J]. International Journal of Coal Geology,2012,96/97:72−81.

[8] 陈健. 淮南煤田煤地球化学对岩浆侵入的响应研究[D]. 合肥：中国科学技术大学，2013.

CHEN Jian. Geochemical responses of coal to igneous intrusion in the Huainan coalfield[D]. Hefei：University of Science and Technology of China，2013.

[9] YAO Yanbin,LIU Dameng,HUANG Wenhui. Influences of igneous intrusions on coal rank,coal quality and adsorption capacity in Hongyang,Handan and Huaibei coalfields,North China[J]. International Journal of Coal Geology,2011,88(2/3):135−146.

[10] WANG Lei,JU Yiwen,LIU Guijian,et al. Selenium in Chinese coals:Distribution,occurrence,and health impact[J]. Environmental Earth Sciences,2010,60(8):1641−1651.

[11] DAI Shifeng,ZOU Jianhua,JIANG Yaofa,et al. Mineralogical and geochemical compositions of the Pennsylvanian coal in the Adaohai mine,Daqingshan coalfield,Inner Mongolia,China:Modes of occurrence and origin of diaspore,gorceixite,and ammonian illite[J]. International Journal of Coal Geology,2012,94:250−270.

[12] 张立文,刘满. 采煤副产品–天然焦的开发与利用[J]. 中国能源,1994(10):10−13. ZHANG Liwen,LIU Man. Exploitation and utilization of natural coke by product of coal mining[J]. Energy of China,1994(10):10−13.

[13] 苗琦,权巨涛,秦云虎,等. 天然焦地质勘查研究[J]. 中国煤炭地质,2019,31(6):9−14. MIAO Qi,QUAN Jutao,QIN Yunhu,et al. Study on geological exploration for natural coke[J]. Coal Geology of China,2019,31(6):9−14.

[14] 江明. 天然焦及其综合利用[J]. 煤炭加工与综合利用,1995(6):46−48. JIANG Ming. Natural coke and its comprehensive utilization[J]. Coal Processing & Comprehensive Utilization,1995(6):46−48.

[15] 李文前. 豫东地区天然焦煤资源利用方向研究[J]. 中国矿业,2008,17(9):51−53. LI Wenqian. Study on development and utilization of natural coke in eastern Henan Province[J]. China Mining Magazine,2008,17(9):51−53.

[16] 中华人民共和国国家质量监督检验检疫总局. 中国煤炭分类：GB/T 5751—2009[S]. 北京：中国标准出版社，2009.

[17] DAI Shifeng,ZHOU Yiping,WANG Xibo,et al. Geochemistry and mineralogy of the Late Permian coals from the Songzao coalfield,Chongqing,southwestern China[J]. Science in China Series D:Earth Sciences,2007,50(5):678−688.

[18] DAI Shifeng,LI Dan,CHOU Chenlin,et al. Mineralogy and geochemistry of boehmite–rich coals:New insights from the Haerwusu surface mine,Jungar coalfield,Inner Mongolia,China[J]. International Journal of Coal Geology,2008,74:185−202.

[19] DAI Shifeng,REN Deyi,CHOU Chenlin,et al. Geochemistry of trace elements in Chinese coals:A review of abundances,genetic types,impacts on human health,and industrial utilization[J]. International Journal of Coal Geology,2012,94:3−21.

[20] 陈鹏. 中国煤炭性质、分类和利用[M]. 北京：化学工业出版社，2007.

[21] 石宪奎. 煤自燃的原因及倾向性预测[J]. 煤炭加工与综合利用,2002(1):41−43. SHI Xiankui. Cause and tendency prediction of spontaneous combustion of coal[J]. Coal Processing & Comprehensive Utilization,2002(1):41−43.

[22] 张松山,刘贞堂,高勤琼,等. 煤尘爆炸性与挥发分关系研究[J]. 煤炭技术,2015,34(2):131−133. ZHANG Songshan,LIU Zhentang,GAO Qinqiong,et al. Study on relationship between coal dust explosion and volatile[J]. Coal Technology,2015,34(2):131−133.

[23] 李雨成,刘天奇,陈善乐,等. 煤质指标对煤尘爆炸火焰长度影响作用的主成分分析[J]. 中国安全生产科学技术,2015,11(3):40−46. LI Yucheng,LIU Tianqi,CHEN Shanle,et al. Principal component analysis of impact of coal quality index on flame length in coal dust explosion[J]. Journal of Safety Science and Technology,2015,11(3):40−46.

[24] 庞克亮,向文国,赵长遂. 沛城煤矿天然焦的热解特性[J]. 化工学报,2007,58(4):994−1000. PANG Keliang,XIANG Wenguo,ZHAO Changsui. Pyrolysis characteristics of Peicheng natural coke[J]. Journal of Chemical Industry and Engineering,2007,58(4):994−1000.

[25] 武帅. 型煤的燃烧特性及其动力学研究[D]. 鞍山：辽宁科技大学，2020.

WU Shuai. Study on combustion characteristics and kinetics of briquette[D]. Anshan：University of Science and Technology Liaoning，2020.

[26] 康开,吴剑波,项群扬,等. 淮南煤泥燃烧特性及动力学分析[J]. 电站系统工程,2018,34(6):18−20. KANG Kai,WU Jianbo,XIANG Qunyang,et al. Research on combustion characteristics and kinetics of Huainan coal slime[J]. Power System Engineering,2018,34(6):18−20.

[27] 鲁阳,王影,张静,等. 新疆昌吉油页岩与煤混合燃烧特性研究[J]. 热力发电,2019,48(4):21−26. LU Yang,WANG Ying,ZHANG Jing,et al. Co−combustion characteristics of Changji oil shale and coal[J]. Thermal Power Generation,2019,48(4):21−26.

[28] 杭伊煊,金晶,杨浩然,等. 准东煤燃烧特性试验研究[J]. 动力工程学报,2020,40(3):185−190. HANG Yixuan,JIN Jing,YANG Haoran,et al. Experimental study on combustion characteristics of Zhundong coal[J]. Journal of Chinese Society of Power Engineering,2020,40(3):185−190.