A Evaluation on Pulverized Coal Combustion Properties Using a Thermogravimetric Analyze Method

Abstract:

In the present research work, volatile matter, influences of reaction temperature and particle size on combustion performance were investigated. Important results were obtained by experimental researches. Ignition point of anthracite coal/bituminous coal blends decreased with volatile matter in blend and combustion was improved. Burnout of coal blends decreased as a function of particle size. However, similar effects were gained when particle size less than 0.074mm accounted for 70%, 60% and 50%, respectively. By contrast, the ratio of 50% was a better choice for good effect and low cost.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 609-613
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.609
• Online since: September 2013
• Authors: Yan Hong Gao*, Ling Tao Bian
• Keywords: Blast Furnace, Combustion Efficiency, Pulverized Coal, Thermogravity

References

[1] A. Babich, S. Yaroshevskii, A. Formoso, A. Isidro, S. Ferreira, A. Cores, Increase of pulverized coal use efficiency in blast furnace, ISIJ Int. 36 (1996) 1250-1258.

DOI: 10.2355/isijinternational.36.1250

[2] T. Ariyama, M. Sato, Y. Yamakawa, Y. Yamada, M. Suzuki, ISIJ Int, 34 (1994) 476-483.

[3] L. Wu, N. Paterson, D. R Dugwell, R. Kandiyoti, Simulation of blast-furnace raceway conditions in a wire-mesh reactor: interference by the reactions of molybdenum mesh and initial results, Energy & Fuels, 20 (2006) 2572-2579.

DOI: 10.1021/ef060289r

[4] S.W. Du, W.H. Chen, J. Lucas, Performances of pulverized coal injection in blowpipe and tuyere at various operational conditions, Energy Conversion and Management, 48 (2007) 2069-2676.

DOI: 10.1016/j.enconman.2007.01.013

[5] X.F. Dong, D. Pinson, S.J. Zhang, A.B. Yu, P. Zulli, Gas–powder flow and powder accumulation in a packed bed I: Experimental study, Powder Technology, 149 (2004) 1-9.

DOI: 10.1016/j.powtec.2004.09.040

[6] X.F. Dong, S.J. Zhang, D. Pinson, A.B. Yu, P. Zulli, Gas–powder flow and powder accumulation in a packed bed II: Numerical study, Powder Technology, 149 (2004) 10-22.

DOI: 10.1016/j.powtec.2004.09.039

[7] B.H. Xu, A.B. Yu, S.J. Chew, P. Zulli, Numerical simulation of the gas–solid flow in a bed with lateral gas blasting, Powder Technology, 109 (2000) 13-26.

DOI: 10.1016/s0032-5910(99)00223-5

[8] R. Kurose, M. Ikeda, H. Makino, M. Kimoto, T. Miyazaki, Pulverized coal combustion characteristics of high-fuel-ratio coals, Fuel, 83 (2004) 1777-1785.

DOI: 10.1016/j.fuel.2004.02.021

[9] H.B. Vuthaluru, Investigations into the pyrolytic behaviour of coal/biomass blends using thermogravimetric analysis, Bioresource Technology, 92 (2004) 187-195.

DOI: 10.1016/j.biortech.2003.08.008

[10] Naredi P, Pisupati SV, Interpretation of char reactivity profiles obtained using a thermogravimetric analyzer, Energy & Fuels, 22 (2008) 317-320.

DOI: 10.1021/ef7004157

[11] H. Zhang, J.L. Zhang, L. Bai, H. Guo, Study on Pulverized coal combustibility and reactivity in Taigang blast furnace, Ironmaking, 27 (2008) 53-54.

[12] Y.R. Zheng, C.Y. Fu, J. Feng, S.Q. Zhang, Effect of pulverized coal size distribution on the combustion efficiency, Clean coal technology, 11 (2005) 36-39.

[13] Z. Zhou, Y.L. Wang, H. Liu, Study on the Influence of Pulverized Coal's Particle Size upon the Combustion Properties, Thermal Power Generation, 35 (2007) 35-38.

[14] X.Y. Long, Z. Wu, Z.W. Liu, G.Q. He, Study on Particle Size of Pulverized Coal Used In Blast Furnace, Ironmaking, 22 (2003) 28-30.

[15] G. Xiong, T. Wang: Beijing, Modern Blast Furnace Pulverized Coal Injection, China Metallurgy Press, Beijing, (2002).