Impact of Changing Combustion of Shenhua Coal to Boiler Operation

Abstract:

Experimental study of changing and blending combustion of Shenhua coal on boiler operation was carried out, while the furnace slagging during the experiment, the coal pulverizing system adjustment and the boiler operation oxygen control issues were analyzed. The results show that: the boiler can operate in safety blending Shenhua coal and Zhungeer coal with the ratio of 7:3 based on the strengthening laboratory analysis of coal as fired, the safety and economy of the boiler and coal pulverizing system can be ensured with the pulverized coal fineness R90 in 30%, and selecting the lower mill combinations and setting the coal pulverizer outlet temperature at 73°C, the reasonable exhaust gas oxygen content should be 4.0%, and the boiler thermal efficiency has an 1% increase compared with the condiation of burning inferior Shanxi bituminous coal, the nitrogen oxide emissions are significantly reduced.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 469-474
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.469
• Online since: June 2014
• Authors: Yi Peng Sun*, Liang Cheng, Qing Feng Zhang
• Keywords: Blending Combustion, Coal Pulverizing System, Operation Parameter, Shenhua Coal, Slagging

References

[1] Z.Q. Cheng, Z.H. Li, C. Liu: East China Electric Power, 2002(02): 52-54(in Chinese).

[2] Y. J. Zhao, H.F. Zhou, Z.S. Li: Thermal Power Generation, 2005(06): 5-7, 4(in Chinese).

[3] J.G. Han, Y. Meng, Z.Q. Cheng, et al: Thermal Power Generation, 2003(02): 5-7(in Chinese).

[4] H.M. Yu, X.Y. Cao, J.H. Zhou, et al: Journal of Zhejiang University: Engineering Science, 2006(7): 1187-1191(in Chinese).

[5] J.H. Zhou, X.H. Zhao, W.J. Yang, et al: Proceedings of the CSEE, 2007, 27(8): 31-36(in Chinese).

[6] Z.Y. Zhang: Boiler Technology, 2011, 42(01): 60-63(in Chinese).

[7] R. Ren, W. Yao: Thermal Power Generation, 2012, 41(02): 8-11(in Chinese).

[8] Y.H. Li, H.W. Chen, J.Z. Liu, et al: Proceedings of the CSEE, 2002, 22(06): 102-105 (in Chinese).

[9] S.H. Liang, X.Y. Ning, E.X. Zhang, et al: Proceedings of the CSEE, 2011, 31(26): 9-15(in Chinese).

[10] W.P. Yan, Y.Y. Chen, D.S. Xing, et al: Proceedings of the CSEE, 2006, 26(14): 93-97(in Chinese).

[11] H.Z. Chen, D.Z. Gu, N. Xue, et al: Thermal Power Generation, 2007(10): 23-26(in Chinese).

[12] J.L. Gao, T.S. Zou, Z.S. Li, et al: Journal of Chinese Society of Power Engineering, 2012, 32(06): 430-434, 475(in Chinese).

[13] Z.L. Chen: Thermal Power Generation, 2011, 40(01): 55-57(in Chinese).