Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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CO Emission Characteristics in the Interacting Counterflow Methane and Hydrogen Partially Premixed Flames

상호작용하는 대향류 메탄-수소 부분예혼합화염의 CO 배출특성

  • 박지웅 (부경대학교 안전공학과) ;
  • 오창보 (부경대학교 안전공학과) ;
  • 김태형 (한국전력공사 전력연구원 그린에너지연구소) ;
  • 박종호 (충남대학교 기계공학과)
  • Received : 2012.07.03
  • Accepted : 2012.09.06
  • Published : 2012.09.30
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Abstract

The CO emission characteristics of interacting hydrogen and methane partially premixed flames were numerically investigated. A counterflow geometry was introduced to establish interacting two partially premixed flames. An one-dimensional OPPDIF code was used to simulate the interacting flames. The GRI-v3.0 was used to calculate the chemical reactions. Emission index for CO(EICO) was evaluated to quantify the CO emitted from the interacting flames. The global strain rate and equivalence ratios for each flame(${\Phi}_{CH_4}$ and ${\Phi}_{H_2}$) were used as parameters to control the extent of interaction between two partially premixed flames. When ${\Phi}_{CH_4}$ was kept to stoichiometric condition and ${\Phi}_{H_2}$ was at rich condition, unburned H2 species of hydrogen flame was transported to the methane flame and affected reactions related with CO formation. When ${\Phi}_{CH_4}$ increased from a stoichiometry to rich condition while ${\Phi}_{H_2}$ was kept to stoichiometric condition, EICO increased initially, had a peak value at ${\Phi}_{CH_4}=1.5$ and decreased gradually. This could be elucidated with an analysis for the elementary reactions related with CO formation.

Keywords

References

  1. $H_2$ Incident Reporting and Lesson Learned, http://www.h2incidents.org/.
  2. S. H. Shorab, Z. Y. Ye, C. K. Law, "An Experimental Investigation on Flame Interaction and the Existence of Negative Flame Speeds", Proc. Combust. Inst. Vol. 20, 1984, pp. 1957-1965.
  3. Z. Cheng, J. A. Wehrmeyer, R. W. Pitz, "Lean or Ultra-lean Stretched Planar Methane/Air Dlames", Proc. Combust. Inst. Vol. 30, 2005, pp. 285-29. https://doi.org/10.1016/j.proci.2004.08.257
  4. 오창보, 이의주, 최병일, "수소화염과 상호작용하는 탄화수소화염의 연소특성", 2008년 한국화재소방학회 추계학술논문발표회 논문집, 2008, pp. 17-20.
  5. 오창보, 이의주, "수소화염과 탄화수소화염의 상호작용에 관한 수치계산 연구", 한국안전학회지, 제25권, 제2호, 2010, pp. 12-17.
  6. 박지웅, 오창보, 상호작용하는 탄화수소-수소화염의 구조 및 오염물질 배출특성에 관한 수치계산연구, KOSCO SYMPOSIUM 논문집, Vol. 42, 2011, pp. 159-165.
  7. J.-W. Park and C. B. Oh, Flame structure and global flame response to the equivalence ratios of interacting partially premixed methane and hydrogen flame, Int. J. Hydrogen Energy, Vol. 37, 2012, pp. 7877-7888. https://doi.org/10.1016/j.ijhydene.2012.01.135
  8. A. E. Lutz, R. J. Kee, J. F. Grcar, and F. M. Rupley, 1997, OPPDIF:A FORTRAN Program for computing opposed-flow diffusion fames, Sandia Report, SAND 96-8243.
  9. G. P. Smith, D. M. Golden, M. Frenklach, N. W. Moriarty, B. Eiteneer, M. Goldernberg, C. T. Bowman, R. K. Hanson, S. Song, W. C. Gardiner, Jr., V. Kissianski, and Z. Qin, http://www.me.berkeley.edu/gri_mech/.
  10. K. Sheshadri and F. A. Williams, Laminar Flow between Parallel Plates with Injection of a Reactant at High Reynolds Number, Int. J. Heat Mass Transfer, Vol. 21, 1978, pp. 251-253. https://doi.org/10.1016/0017-9310(78)90230-2
  11. T. Takeno and M. Nishioka, Species Conservation and Emission Indices for Flames Described by Similarity Solutions, Combust. Flame, Vol. 92, 1993, pp. 465-468. https://doi.org/10.1016/0010-2180(93)90157-X
  12. I. Glassman, R. A., Yetter. Combustion, 4th ed., Academic Press, San Diego, USA; 2008.