Effect of ash on coal structure and combustibility

Xiao-jun Ning; Wang Liang; Jian-liang Zhang; Guang-wei Wang; Yan-jiang Li; Chun-he Jiang

doi:10.1007/s12613-019-1812-y

Volume 26 Issue 8

Aug. 2019

Turn off MathJax

数据统计

计量

文章访问数: 573
HTML全文浏览量: 123
PDF下载量: 24
被引次数: 0

文章导航 > 矿物冶金与材料学报（英文） > 2019 > 26(8): 973-982

Xiao-jun Ning, Wang Liang, Jian-liang Zhang, Guang-wei Wang, Yan-jiang Li, and Chun-he Jiang, Effect of ash on coal structure and combustibility, Int. J. Miner. Metall. Mater., 26(2019), No. 8, pp. 973-982. https://doi.org/10.1007/s12613-019-1812-y

Cite this article as:

Xiao-jun Ning, Wang Liang, Jian-liang Zhang, Guang-wei Wang, Yan-jiang Li, and Chun-he Jiang, Effect of ash on coal structure and combustibility, Int. J. Miner. Metall. Mater., 26(2019), No. 8, pp. 973-982. https://doi.org/10.1007/s12613-019-1812-y

Citation:

PDF( 4467 KB)

引用本文 PDF XML SpringerLink

研究论文

Effect of ash on coal structure and combustibility

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
School of Chemical Engineering, The University of Queensland, Queensland 4072, Australia

通讯作者:
Guang-wei Wang E-mail: guangwei_wang@ustb.edu.cn

中文摘要

Four bituminous coals and one anthracite were used in this study. On the basis of the similar volatile matter contents of the four bituminous coals, the effects of ash in coal on the microstructure, carbonaceous structure, and chemical composition of pulverized coal were studied. Thermogravimetric analysis was used to study the effect of the addition of anthracite on the combustibility of four different bituminous coals. The results showed that with the increase of ash content in pulverized coal, the microstructure of carbon particles in coal was not much different. However, the analysis results of Raman spectroscopy and X-ray diffraction pattern showed that as the ash content increased, the degree of graphitization of coal carbonaceous structure gradually decreased. The combustibility of the four bituminous coals were better than that of the anthracite. When bituminous coal and anthracite were mixed and burned, the combustibility of the mixed sample decreased as the ash content increased.

关键词:

Research Article

Effect of ash on coal structure and combustibility

+ Author Affiliations

Abstract

Abstract

Four bituminous coals and one anthracite were used in this study. On the basis of the similar volatile matter contents of the four bituminous coals, the effects of ash in coal on the microstructure, carbonaceous structure, and chemical composition of pulverized coal were studied. Thermogravimetric analysis was used to study the effect of the addition of anthracite on the combustibility of four different bituminous coals. The results showed that with the increase of ash content in pulverized coal, the microstructure of carbon particles in coal was not much different. However, the analysis results of Raman spectroscopy and X-ray diffraction pattern showed that as the ash content increased, the degree of graphitization of coal carbonaceous structure gradually decreased. The combustibility of the four bituminous coals were better than that of the anthracite. When bituminous coal and anthracite were mixed and burned, the combustibility of the mixed sample decreased as the ash content increased.
- carbonaceous structure;
- combustion characteristics;
- graphitization;
- thermogravimetric

FullText(HTML)

Supplements(0)

References(30)

References

[1]	J.M. Steer, R. Marsh, M. Greenslade, and A. Ribinson, Opportunities to improve the utilisation of granulated coals for blast furnace injection, Fuel, 151(2015), p. 40.
[2]	P.C. Li, J.L. Zhang, R.S. Xu, and T.F. Song, Representation of characteristics for modified coal, simi-coke and coke used in blast furnace injection, Energy Metall. Ind., 34(2015), No. 3, p. 41.
[3]	J.H. Liao, A.B. Yu, and Y.S. Shen, Modelling the injection of upgraded brown coals in an ironmaking blast furnace, Powder Technol., 314(2017), p. 550.
[4]	S. Ren, S.L. Li, J. Yang, H.M. Long, J. Yang, M. Kong, J. Yang, and Z.L. Cai, Poisoning effects of KCl and As₂O₃ on selective catalytic reduction of NO with NH₃ over Mn-Ce/AC catalysts at low temperature, Chem. Eng. J., 351(2018), p. 540.
[5]	J.M.K. O'keefe, A. Bechtel, K. Christains. S.F. Dai, W.A. DiMichele, C.F. Eble, J.S. Esterle, M. Mastalerz, A.L. Raymond, B.V. Valentim, N.J. Wagner, C.R. Ward, and J.C. Hower, On the fundamental difference between coal rank and coal type, Int. J. Coal Geol., 118(2013), p. 58.
[6]	D.J. Casagrande, G. Idowu, A. Friedman, P. Rickert, K. Siefert, and D. Schlenz, H₂S incorporation in coal precursors:Origins of organic sulphur in coal, Nature, 282(1979), p. 599.
[7]	Z.Y. Gao, L.J. Fang, X.M. Ye, and W.P. Yan, Thermal gravity investigation on combustion performance of blended coal from anthracite and bituminous, J. North China Electric Power Univ., 28(2001), No. 1, p. 1.
[8]	T. Xu, X.J. Ning, G.W. Wang, W. Liang, J.L. Zhang, Y.J. Li, H.Y. Wang, and C.H. Jiang, Combustion characteristics and kinetic analysis of co-combustion betweenbag dust and pulverized coal, Int. J. Miner. Metall. Mater., 25(2018), No. 12, p. 1412.
[9]	R.S. Xu, J.L. Zhang, T.F. Song, H.Y. Wang, and D. Zhao, The research on process characteristics of different fuels for blast furnace injection,[in] The 6th International Symposium on High-Temperature Metallurgical Processing, Orlando, 2015, p. 357.
[10]	H.B. Zuo, W.W. Geng, J.L. Zhang, and G.W. Wang, Comparison of kinetic models for isothermal CO₂ gasification of coal char-biomass char blended char, Int. J. Miner. Metall. Mater., 22(2015), No. 4, p. 363.
[11]	D.W. Kim, J.M. Lee, J.S. Kim, and P.K. Seon, Study on the combustion characteristics of wood-pellet and Korean anthracite using TGA, Korean Chem. Eng. Res., 48(2010), p. 58.
[12]	R. Friedel and J.A. Queiser, Infrared analysis of bituminous coals and other carbonaceous materials, Anal. Chem., 28(1956), No. 1, p. 22.
[13]	L. Lu, V. Sahajwalla, C. Kong, and D. Harris, Quantitative X-ray diffraction analysis and its application to various coals, Carbon, 39(2001), No. 12, p. 1821.
[14]	W.C. Xia, J.G. Yang, and C. Liang, Investigation of changes in surface properties of bituminous coal during natural weathering processes by XPS and SEM, Appl. Surf. Sci., 293(2014), p. 293.
[15]	C. Wang, J.L. Zhang, G.W. Wang, K.X. Jiao, Z.J. Liu, and K.C. Chou, Combustion characteristics and kinetics of anthracite with added chlorine, Int. J. Miner. Metall. Mater., 24(2017), No. 7, p. 745.
[16]	X.G. Li, B.G. Ma, L. Xu, Z.T. Luo, and K. Wang, Catalytic effect of metallic oxides on combustion behavior of high ash coal, Energy Fuels, 21(2007), No. 5, p. 2669.
[17]	G.W. Wang, J.L. Zhang, J.G. Shao, Z.J. Liu, G.H. Zhang, T. Xu, J. Guo, H.Y. Wang, R.S. Xu, and H. Lin, Thermal behavior and kinetic analysis of co-combustion of waste biomass/low rank coal blends, Energy Convers. Manage., 124(2016), p. 414.
[18]	G.W. Wang, J.L. Zhang, G.H. Zhang, X.J. Ning, X.Y. Li, Z.J. Liu, and J. Guo, Experimental and kinetic studies on co-gasification of petroleum coke and biomass char blends, Energy, 131(2017), p. 27.
[19]	G.W. Wang, J.L. Zhang, X. Huang, X.H. Liang, X.J. Ning, and R.P. Li, Co-gasification of petroleum coke-biomass blended char with steam at temperatures of 1173-1373 K, Appl. Therm. Eng., 137(2018), p. 678.
[20]	C. Zou, C.B. Wang, H.M. Liu, H.F. Wang, and Y. Zhang, Effect of olatile and ash contents in coal on the volatilization of arsenic during isothermal coal combustion, Energy Fuels, 31(2017), No. 11, p. 12831.
[21]	G.W. Wang, J.L. Zhang, J.G. Shao, Z.J. Liu, H.Y. Wang, X.Y. Li, P.C. Zhang, W.W. Geng, and G.H. Zhang, Experimental and modeling studies on CO₂ gasification of biomass chars, Energy, 114(2016), p. 143.
[22]	B. Manoj and A.G. Kunjomana, Structural characterization of selected Indian coals by X-ray diffraction and spectroscopic techniques, Trends Appl. Sci. Res., 7(2012), No. 6, p. 434.
[23]	D. Wu, G.J. Liu, R.Y. Sun, and F. Xiang, Investigation of structural characteristics of thermally metamorphosed coal by FTIR spectroscopy and X-ray diffraction, Energy Fuels, 27(2013), No. 10, p. 5823.
[24]	K.J. Li, R. Khanna, J.L. Zhang, M. Barati, Z.J. Liu, T. Xu, T.J. Yang, and V. Sahajwalla, Comprehensive investigation of various structural features of bituminous coals using advanced analytical techniques, Energy Fuels, 29(2015), No. 11, p. 7178.
[25]	R.S. Xu, B.W. Dai, W. Wang, J. Schenk, A. Bhattacharyya, and Z.L. Xue, Gasification reactivity and structure evolution of metallurgical coke under H₂O/CO₂ atmosphere, Energy Fuels, 32(2018), No. 2, p. 1188.
[26]	M.L.S. Oliveira, C.R. Ward, C.H. Sampaio, X. Querol, C.M.N.L. Cutruneo, S.R. Taffarel, and L.F.O. Silva, Partitioning of mineralogical and inorganic geochemical components of coals from Santa Catarina, Brazil, by industrial beneficiation processes, Int. J. Coal Geol., 116-117(2013), p. 75.
[27]	L.J. Zhang, Z.H. Li, Y.L. Yang, Y.B. Zhou, B. Kong, J.H. Li, and L.L. Si, Effect of acid treatment on the characteristics and structures of high-sulfur bituminous coal, Fuel, 184(2016), p. 418.
[28]	X.J. Li, J.I. Hayashi, and C.Z. Li, FT-Raman spectroscopic study of the evolution of char structure during the pyrolysis of a Victorian brown coal, Fuel, 85(2006), No. 12-13, p. 1700.
[29]	X.P. Zou, L. Ding, X. Liu, Q.H. Guo, H.F. Lu, and X. Gong, Study on effects of ash on the evolution of physical and chemical structures of char during CO₂ gasification, Fuel, 217(2018), p. 587.
[30]	B.G. Ma, X.G. Li, L. Xu, K. Wang, and X.G. Wang, Investigation on catalyzed combustion of high ash coal by thermogravimetric analysis, Thermochim. Acta, 445(2006), No. 1, p. 19.

Relative Articles

Cited By

Proportional views

数据统计

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

数据统计

分享

计量

Effect of ash on coal structure and combustibility

中文摘要

Effect of ash on coal structure and combustibility

Abstract

References

数据统计

Catalog