Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effects of Addition of Hydrogen and Water Vapor on Flame Structure and NOx Emission In $CH_4$-Air Diffusion Flame

메탄-공기 확산화염에서 수소와 수증기 첨가가 화염구조와 NOx 배출에 미치는 효과

  • Park, Jeong (School of Mechanical Engineering, Pukyong National University) ;
  • Keel, Sang-In (Environment & Energy Research Division, Korea Institute of Machinery and Materials) ;
  • Yun, Jin-Han (Environment & Energy Research Division, Korea Institute of Machinery and Materials)
  • 박정 (부경대학교 기계공학부) ;
  • 길상인 (한국기계연구원 환경에너지기계연구본부) ;
  • 윤진한 (한국기계연구원 환경에너지기계연구본부)
  • Published : 2007.06.15
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Abstract

Blending effects of hydrogen and water vapor on flame structure and NOx emission behavior are numerically studied with detailed chemistry in methane-air counterflow diffusion flames. The composition of fuel is systematically changed from pure methane and pure hydrogen to the blending fuels of methane-hydrogen-water vapor through the molar addition of $H_2O$. Flame structure is changed considerably for hydrogen-blending methane flames and hydrogen-blending methane flames diluted with water vapor in comparison to pure methane flame. These complicated changes of flame structures also affect NOx emission behavior considerably. The changes of thermal NO and Fenimore NO are analyzed for various combinations of the fuel composition. Importantly contributing reaction steps to thermal NO and Fenimore NO are addressed in pure methane, hydrogen-blending methane flames, and hydrogen-blending methane flames diluted with water vapor.

Keywords

References

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