Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Flame image precise measurement and flame control to raise combustion efficiencies of a blast furnace

고로의 연소효율을 높이기 위한 화염영상 정밀 검출 및 화염제어

  • 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.)
  • Received : 2014.12.15
  • Accepted : 2014.12.26
  • Published : 2014.12.31
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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.

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References

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