EPE  Vol.1 No.2 , November 2009
Study on Lignite-Blended Burning Technology in the 1025t/h Bituminous Boiler
Abstract: Due to a serious shortage of the coal in Tonghua, a retrofit solution of mixing warm flue gas extracted from reversing chamber into the coal pulverizing system and cold air into the hot air coal pulverizing system is proposed so as to reduce oxygen content. At the end of the pulverizing system and medium temperature of the conveying system, dual-channel combustion burner is transformed into horizontal bias combustion burner. The measurement results show that 50% ratio of lignite blended in the 1025t/h bituminous boiler is feasibility. It is also an important technology to reduce NOx pollutant emission.
Cite this paper: nullJ. MA, J. WU, T. ZHOU, J. LENG and C. JIANG, "Study on Lignite-Blended Burning Technology in the 1025t/h Bituminous Boiler," Energy and Power Engineering, Vol. 1 No. 2, 2009, pp. 116-121. doi: 10.4236/epe.2009.12018.

[1]   J. W. Shu, F. B. Meng, Q. L. Huang, et al., “The calculation and selection of drying agents in connection with the change of fuel for a boiler from brown coal to bituminous coal,” Journal of Engineering for Thermal Energy and Power, Vol. 7, pp. 453–456, 2001.

[2]   J. Guo, R. Jiang, and H. C. Zeng, “Formation of NOx during blended coals combustion process and it’s computer simulation,” Power System Engineering, Vol. 10, No. 2, pp. 55–60, 1999.

[3]   Y. H. Li, H. W. Chen, J. Z. Liu, et al., “Numerical simulation of blending coals combustion of 800 MW boiler,” Proceedings of the CSEE, Vol. 22, No. 6, pp. 101–104, 2002.

[4]   J. X. Wu, H. G. Chen, J. F. Ma, et al., “Feasibility study on the hot flue gas mixture in coal pulverizing system of 200MW boiler,” Electric Power, Vol. 39, No. 3, pp. 22–25, 2006.

[5]   J. F. Ma, J. X. Wu, T. S. Zhou, et al., “Study on lignite blended burning technology in the bin and feeder coal pulverizing system,” Journal of Power Engineering, Vol. 28, No. 1, pp. 14–18, 2008.

[6]   S. Miyamae, T. Kiga, H. Ikebe, K. Makino, et al., “Low NOx pulverized coal combustion technology for large utility thermal power plant,” Coal Combustion Science and Technology of Industrial and Utility Application, Hemisphere Publishing Corporation, New York, 1988.

[7]   M. Berg and H. Bering, “Development of a low-NOx burner for pulverized- coal combustion and retrofitting of a full-scale power plant boiler,” Proceedings of the 2nd International Symposia on Coal Combustion, China Machine Press, Beijing, 1991.

[8]   E. Troconi, L. Lietti, P. Forzatti, et al., “Experimental and theoretical investigation of the dynamics of the SCR- DeNOx reaction, Chemistry Science, Vol. 51, No. 11, pp. 2965–2970, 1996.

[9]   C. G. Yin, S. Cailat, and J. Harion, “Investigation of flow, combustion, heat-transfer and emission from a 609MW utility tangentially fired pulverized-coal boiler,” Fuel, Vol. 81, No. 8, pp. 997–1006, 2002.

[10]   M. Falcite, S. Pasini, and L. Tognotti, “Modeling paractical combustion systems and predicting NOx emission with an integrated CFD based approach,” Computers and Chemical Engineering, Vol. 26, No. 9, pp. 1171–1183, 2002.

[11]   Fossil-fuel Power Plant New Atmospheric Pollutant Emission Standard, GB13223-2003, Electric Power Press, Beijing, China, 2003.