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http://dx.doi.org/10.14775/ksmpe.2014.13.6.008

Flame image precise measurement and flame control to raise combustion efficiencies of a blast furnace  

Kim, Jae-Yeol (Mechanical System Engineering, Chosun UNIV.)
Lee, Seung-Chul (Applied & Computational Mechanics, Chosun College of Science & Technology)
Kwak, Nam-Su (Advanced Part & Materials Engineering, Chosun UNIV.)
Han, Jae-Ho (Mechanical and Automotive Engineering, Songwon UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.13, no.6, 2014 , pp. 8-14 More about this Journal
Abstract
Pulverized coal (PC) has become an important auxiliary fuel in the iron and steel industry since the technique of pulverized coal injection (PCI) was developed for iron making. The combustion efficiencies of pulverized coal in blowpipes and tuyeres under various operational conditions are numerically predicted to determine the performance levels with regard to different locations of the nozzles in a blast furnace. A variety of parameters, including the pulverized coal quantities, oxygen amounts, inlet temperatures of the tuyeres, and the mass flow rate of coal carrier gas are taken into consideration. Also, in order to develop greater efficiency than those of existing coal injection systems, this study applies a flame measurement system using a charge-coupled device (CCD) camera and a frame grabber. It uses auto sampling algorithms from the flame shape information to determine the device for the optimal location control for PCI. This study finds further improvements of the blast furnace performance via the control of the PCI locations.
Keywords
pulverized coal; blow pipes; tuyeres; Combustion efficiencies; blast furnace; Image recognition;
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1 Shan-Wen Du, Wei-Hsin Chen and Jhon Lucas, "Performances of pulverized coal injection in blowpipe and tuyere at various operational conditions," Energy conversion & management, Vol. 48, pp. 2069-2076, 2007.   DOI   ScienceOn
2 John G. Mathieson, Jhon S. Truelove and Harold Rogers, "Toward an understanding of coal combustion in blast furnace tuyere injection," Fuel, Vol. 84, pp. 1229-1237, 2005.   DOI   ScienceOn
3 Ching-Wen Chen, "Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere," Applied Mathematical Modeling, Vol. 29, pp. 871-884, 2005.   DOI   ScienceOn
4 Shan-Wen Du and Wei-Hsin Chen,"Numerical prediction and practical improvement of pulverized coal combustion in blast furnace," International Communications in Heat and Mass Transfer, Vol. 33, pp. 327-334, 2006.   DOI   ScienceOn
5 Jamaluddin AS, Wall TF and Truelove JS, "Modeling of high intensity combustion of pulverized coal in a tubular combustor," Combust Sci Technol, Vol. 55, pp. 89-113, 1987.   DOI   ScienceOn
6 Monson JR and Gathergood DS,"Review of injection of coal into blast furnace tuyeres," Ironmaking Steelmaking, Vol. 8, No. 5, pp. 101-103, 1981.
7 Lu, G., Yan, Y. and Colechin, M., "A Digital Imaging BAsed Multifunctional Flame Monitoring System," IEEE Transactions on Instrumentation and Measurement, Vol.53, NO.4, pp.1152-1158, 2004.   DOI   ScienceOn