直流煤粉燃烧器的煤粉火焰稳定问题

Flame Stability of Pulverized Coal of Direct Flow Burners

在紧靠燃烧器出口，组织好稳定的高温、高煤粉浓度和适当高氧浓度的“三高稳燃区”是实现煤粉火焰稳定和降低ＮＯＸ排放的关键。据此剖析了国内新开发的一些燃烧器的稳燃性能，也剖析了国外引起的一些燃烧器及其稳燃技术，提出和开发了一种新型高稳燃性直流煤粉燃烧器。

In the close neighborhood of burners' exit,to maintain a stable high temperature,high pulverized coal concentration and proper high oxygen concentration zone(“Three high” stabilized burning zone) is the key to realizing flame stability of pulverized coal and low emission of NOx.Based upon this principle,the stabilized combustion performance and stabilisation technology some burners newly developed at home and imported from abroad are analyzed.A new type direct flow pulverized coal burner with high stable combustion performance is put forward and developed.