Design and development of a low NOx Coanda ejector burner
Design and development of a low NOx Coanda ejector burner
复制标题
低NOx柯恩达喷射燃烧器的设计与开发
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
P. O'Nions
中科院分区：
文献类型：
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作者：
M. Vahdati;P. O'Nions
小型气体燃烧系统正成为严格污染法规的目标，这将为减少NOx排放带来挑战。设计并开发了一种新型燃气燃烧器，该燃烧器采用柯恩达引射器来促进燃烧器出口烟气的再循环。这提供了一种燃烧系统，该燃烧系统产生非常低的NOx和CO排放，同时在空气/燃料比和燃料流速的范围内保持高度的火焰稳定性。烟气的再循环是通过操纵系统的空气动力学来实现的，而不需要外部管道系统或移动部件的帮助。燃烧器的设计允许非常低的污染物排放接近化学计量条件，导致高温的出口气体。这种类型的燃烧器的潜在应用是在小型和中型炉低氮氧化物排放的要求。此外，非常高温的应用，例如玻璃熔炉，可以从这种燃烧器的成本和污染物排放中受益。
Small gaseous combustion systems are being targeted by strict pollution legislation which will provide challenges to reduce the NO x being emitted. A novel type of gas burner has been successfully designed and developed which incorporates a Coanda ejector to promote recirculation of flue gas from the burner exit. This provides a combustion system which gives very low emissions of NO x and CO, whilst maintaining a high degree of flame stability over a range of air/fuel ratios and fuel flow rates. Recirculation of flue gas was obtained by manipulating the aerodynamics of the system, without the aid of external duct work or moving parts. The design of the burner allowed very low pollutant emissions near stoichiometric conditions, resulting in high temperatures of the exit gas. Potential applications of this type of burner are in small and intermediate furnaces where low NO x emissions are required. Moreover, very high-temperature applications, such as glass furnaces could benefit in both cost and pollutant emissions from such a burner.