一种新型烧嘴及其高效节能低污染特性分析

本文介绍了一种新型烧嘴的结构和工作原理。陶瓷蓄热体和切换阀是其两个主要部件。高温烟气和低温空气在切换阀的控制下，交替地通过陶瓷蓄热体，从而实现烟气余热回收和助燃空气的预热。助燃空气的预热温度可高达800℃以上。燃料被分成一次燃料和二次燃料两部分，总量很少的一次燃料与高温助燃空气在烧嘴内直接混合燃烧，而总量很多的二次燃料则被直接喷入炉瞠内进行高温低氧条件下的燃烧。文章对高温低氧燃烧方式的高效节能、低污染特性进行了分析。结果表明，采用高温空气燃烧技术实现60％的节能率和低NOx排放是可能的。

High Temperature Air Combustion Burner and Analysis of Its Characteristics

The main parts and working principle of high temperature air combustion burner,which is equipped with ceramic honeycomb regenerative chamber and switching valve, is de-scribed in this paper. Controlled by the switching valve, the flue gas and combustion air passthrough the ceramic chamber alternatley. In this way, the temperature of air can be increased toover 800 C. Fuel is divided to two parts. The quantity of primary fuel is far less than the quanti-ty of secondary fuel. The former is jetted into burner while the latter is jetted in furnace in whichcircumfluence of flue gas is formed. So the fuel of large quanitiy combusts in atmosphere of hightemperature and low oxyen concentration. Theoretical analyses of the performance of the burnerare given also. The results show that it is possible to achieve the goal of both up to 60% fuel sav-ings and very low emission of NOx.