대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제30권9호
  • /
  • Pages.842-849
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  • 2006
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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재연소 과정을 적용한 연소로에서 공기 다단 연소기의 NOx 발생 및 열전달에 대한 효과

Effect of a Multi Air-staged Burner on NOx Formation and Heat Transfer in Furnace Adopted the Reburning Process

  • 김혁수 (한국과학기술원 대학원 항공우주공학) ;
  • 백승욱 (한국과학기술원 항공우주공학) ;
  • 이창엽 (한국과학기술원 대학원 항공우주공학)
  • 발행 : 2006.09.01
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초록

An experimental study has been conducted to investigate the effects of a multi air-staged burner on NOx formation and heat transfer in a 15kW large-scale laboratory furnace adopted the reburning process. The reburn fuel as well as burnout air was injected from each nozzle attached at the wall of the cylindrical furnace. Fuel in both main burner and reburn nozzle was LPG (Liquefied Petroleum Gas). The paper reports the influences on NOx reduction of reburn fuel fraction in reburning zone. Temperature distribution inside the overall region as well as total heat flux at the wall of the furnace has been measured to examine the heat transfer characteristics due to the reburning process. For comparison, the reburning effects were examined for a combustor with two types of burner; a regular single staged burner and a multi-air staged burner. A gas analysis was also performed to evaluate an appropriate condition for NOx emission in a primary zone for the excess air ratio of 1.1. As a result, combustion efficiency expected to become more efficient due to the reduction of heat loss in burnout zone decrease when multi air-staged burner in furnace adopted reburning technology was used.

키워드

참고문헌

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