Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Simulation Analysis of MILD Combustion and NOx Formation for Methane-Hydrogen Mixture Using 0D Model

0D 모델을 활용한 메탄-수소 혼소에 따른 MILD 연소 및 NOx 배출 특성 해석 연구

  • AN, SOJEONG (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • PARK, JINJE (Korea Institute of Industrial Technology) ;
  • BAE, YOUN-SANG (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • LEE, YOUNGJAE (Korea Institute of Industrial Technology)
  • 안소정 (연세대학교 화공생명공학과) ;
  • 박진제 (한국생산기술연구원) ;
  • 배윤상 (연세대학교 화공생명공학과) ;
  • 이영재 (한국생산기술연구원)
  • Received : 2022.05.31
  • Accepted : 2022.08.18
  • Published : 2022.08.30
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Abstract

Hydrogen with high chemical reactivity and combustion efficiency, is expected to reduce greenhouse gas and CO emission. However, there is a problem of increase in NOx emission due to hydrogen combustion. MILD combustion technology has been proposed to resolve NOx emission. In this study, the characteristics of MILD combustion and NOx formation by flue gas recirculation (KV) in CH4-H2 mixture were analyzed and predicted using 0D premixed combustion model. The ignition delay time became shorter as the hydrogen co-firing rate increased, and longer as the recirculation rate increased. For NOx emission, EINO decreased as the KV increased, but EINO increased as the hydrogen co- firing rate increased. In particular, EINO was predicted to increase significiently above 80% hydrogen. Through the pathway analysis of NO formation, it was found that the influence of N2O intermediate route and NNH route was enhanced for hydrogen co-firing.

Keywords

Acknowledgement

본 논문은 한국생산기술연구원 기관주요사업 "탄소중립을 위한 암모니아 기반 청정 수소 생산 기술개발(KITECH JD-220001)"의 지원으로 수행되었습니다.

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