충돌제트 버너에서 합성가스( H₂/CO )/공기 예혼합화염의 안정화 특성
Stability Characteristics of Syngas(H₂/CO )/Air Premixed Flames using an Impinging Jet Burner
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초록
An experimental study was conducted to investigate the flame stability of the synthetic gas (syngas) using an impinging premixed jet burner. Since the syngas mainly consisted of H2 and CO, the H₂/CO mixture was simulated as the syngas. H₂/CO mixture ratios, fuel/air mixture velocities and equivalence ratios were used as major parameters on the flame stability. The role of the impinging plate on the flame stability was also examined. In addition, laminar burning velocities of the H₂/CO mixture were predicted numerically to understand the characteristics of the flame stability for the syngas. The increase in the H2 concentration into the syngas brings about the extension of the blowout limit and the reduction in the flashback limit in terms of the stable flame region. The impinging jet plate broadened the blowout limit but does not play important role in changing of the flashback limit. Finally, it was found that the stability region of the flame using the syngas, which is expressed in terms of the mixture velocity and the equivalence ratio in this study, significantly differed from that of CH4.
Abstract
An experimental study was conducted to investigate the flame stability of the synthetic gas (syngas) using an impinging premixed jet burner. Since the syngas mainly consisted of H2 and CO, the H₂/CO mixture was simulated as the syngas. H₂/CO mixture ratios, fuel/air mixture velocities and equivalence ratios were used as major parameters on the flame stability. The role of the impinging plate on the flame stability was also examined. In addition, laminar burning velocities of the H₂/CO mixture were predicted numerically to understand the characteristics of the flame stability for the syngas. The increase in the H2 concentration into the syngas brings about the extension of the blowout limit and the reduction in the flashback limit in terms of the stable flame region. The impinging jet plate broadened the blowout limit but does not play important role in changing of the flashback limit. Finally, it was found that the stability region of the flame using the syngas, which is expressed in terms of the mixture velocity and the equivalence ratio in this study, significantly differed from that of CH4.
참고문헌 (13)
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