【摘要】 针对高炉煤气热值低,不易点燃、燃烧稳定性差等问题,设计了一种旋流燃烧器,通过冷态实验,研究该旋流燃烧器煤气侧旋流叶片角度分别在30°、45°、60°时出口气流对冷态流场的影响。结果表明:随着旋流叶片角度的增加,回流区明显增加,旋流强度逐渐增强,旋流叶片角度为60°时,得到最佳的回流区,回流区长1.98 d_eq、宽1.85 d_eq。更多还原

【Abstract】 A swirl burner was designed to solve the problems of low burning and poor combustion stability of blast furnace gas. Through the cold-low experiment, the affect of outlet air flow on cold flow field when the angle of gas swirl blade in the burner without bluff body were 30°、45°and 60°. The result showed that the reflux region increased obviously and swirl intensity increased gradually with the increase of the angle. When the angle reached to 60°, the burner could obtain the best recirculation zone, the length reached 1.98 d_eq, width reached 1.85 d_eq.更多还原