A Study on Low-NOx Combustion in an Oil Burner for an Industrial Boiler

산업 보일러용 오일버너에서의 저 NOx 연소 연구

  • 신명철 (한국생산기술연구원 고온생산기술연구부) ;
  • 김세원 (한국생산기술연구원 고온생산기술연구부) ;
  • 박주원 (한국생산기술연구원 고온생산기술연구부) ;
  • 방병열 (한국생산기술연구원 고온생산기술연구부) ;
  • 양원 (한국생산기술연구원 고온생산기술연구부) ;
  • 고영건 (한국과학기술원 기계공학과)
  • Published : 2009.03.31


A novel low NOx oil burner of 0.7 MW (for a 1 ton steam/hr industrial boiler) was designed and tested to investigate the combustion characteristics through in-flame measurement and flue gas analysis. Flame shape was observed by CCD camera and $CH^*/{C_2}^*$ radical distribution in the flame were observed, along with measurement of flue gas composition such as NOx and CO, for various heat inputs, excess airs and pressure of the fuel spary nozzles. The flame showed the two-zone structure: fuel-rich and fuel-lean zone, which was very favorable for the low-NOx combustion, and the NOx emission for haevy oil combustion was significantly reduced to < 150 ppm at 4 % $O_2$, compared with the NOx level of a conventional heavy oil burner.



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