220204 火炎基部への微量燃料添加による低品位燃料噴流拡散火炎の保持性能の向上(OS12 燃焼工学の新展開,オーガナイズド・セッション)

概要

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As a new method to improve the capability of flame holding of jet diffusion flame, a coaxial double-injector burner, in which small amount of rich premixed gas is injected from the gap between the injector tubes, was developed. By using this method, a jet diffusion flame of pseudo biogas (methane diluted with nitrogen by 70%), which cannot be stabilized on an ordinary injector because of its weakness of reactivity, was easily stabilized against a considerably high injection velocity of fuel. It was found that the addition of premixed gas at the flame base forms a premixed flame "wing" connected to an ordinary reaction kernel, which stands a high flow velocity because of its high propagation velocity.
一般社団法人日本機械学会の論文
2011-03-17