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

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experiment on Low NOx Combustion Characteristics in a Multi-Staged Burner

다단연소기를 이용한 저 NOx 연소특성 연구

  • 조은성 (서울대학교 대학원 기계항공공학부) ;
  • 성용진 (서울대학교 대학원 기계항공공학부) ;
  • 정석호 (서울대학교 기계항공공학부)
  • Published : 2003.01.01
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Abstract

Staged combustion, such as air- and fuel-staging, is a relatively well-known technique fur reduction of NOx emission and used in combination with other techniques nowadays. However, the design variables are still selected depending upon operating conditions. There are many variables tested to investigate the NOx emission characteristics fur changing of fuel or air velocity, swirl intensity, and staging ratio of air and fuel in multi-staged burner. In air-staging case, the fuel-rich condition of the primary combustion zone is very helpful to reduce NOx emission and its range is known to be restricted by the increase of carbon monoxide. However, in many cases carbon monoxide level is not too high to be restricted operating condition. So we tried to expand the equivalence ratio range to the richer condition in the primary combustion zone and certificate the function of each burner component and its contribution to the overall NOx production.

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References

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