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利用高速纹影摄像方法结合定容燃烧弹研究了CO_2和H_2O稀释对CO/H_2/air混合气层流燃烧速度的影响,获得了不同当量比、稀释气和CO/H_2比例下合成气的层流燃烧速度。结果表明,CO_2与H_2O对合成气层流燃烧速度的影响有显著差异。总体上来说,CO_2具有更强的稀释效果。从化学反应的角度出发,CO_2与H_2O对合成气的燃烧化学反应有着截然相反的效果,CO_2抑制燃烧化学反应,而H_2O起到促进燃烧化学反应的作用。
The effects of CO_2 and H_2O dilution on the laminar flow combustion rate of CO / H_2 / air mixture were studied by using high-speed schlieren photography and constant volume combustion bomb. The effects of different equivalence ratios, dilution gas and CO / H_2 ratio on the laminar flow of syngas Stream burning speed. The results show that there are significant differences between CO_2 and H_2O on the combustion velocity of LPCF. In general, CO 2 has a stronger dilution effect. From the perspective of chemical reaction, CO 2 and H 2 O have opposite effects on the combustion chemical reaction of syngas. CO 2 inhibits the combustion chemical reaction, while H 2 O plays a role of promoting combustion chemical reaction.