高温空気流中における浮上がり噴流火炎の予混合化燃焼とNO_x低減(熱工学,内燃機関,動力など)

概要

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In general, it is difficult for the low NOx combustion to occur in non-premixed flames. It was assumed that the premixing combustion by the spouting of fuel and air brought about the remarkable NOx reduction in non-premixed flames. In the present study, experiments on non-premixed, lift-off jet flames in a high-temperature air stream were carried out. The premixing occurs in the lift-off region. The air temperature was 1073K, and the mixture of ethylene and nitrogen were used for fuels. With the lift-off height changed, the effect of the premixing on NOx formation was examined. It was shown that the increase of the lift off height reduces NOx emission. The results suggest that the premixing after the process of the injection of fuel becomes a very effective method for NOx reduction in non-premixed combustion.
一般社団法人日本機械学会の論文
2005-01-25