高温空气燃烧技术的超低NO_x研究  

Experimental Study on the Technology of Extra Low NO_x Emission in Industrial Furnace with HTAC

作　　者：苍大强[1] 关运泽[1] 毛一心[1] 张先棹[1] 白皓[1] 聂雄芳[1] 宗燕兵[1] 

机构地区：[1]北京科技大学冶金学院,北京100083

出　　处：《燃烧科学与技术》2003年第2期190-193,共4页Journal of Combustion Science and Technology

摘　　要：高温空气燃烧技术(HTAC)是用蓄热室回收烟气中的余热,将助燃空气预热至800℃以上,此时燃料处在低氧气氛中稳定燃烧,同时温度分布很均匀,产生的NOx非常低,成为节能和环保双赢的一种燃烧方法.为了推进此项技术的实用化,在蓄热式锻造炉上进行了实验研究,重点为超低NOx的排放.通过采用"燃料不换向"和"炉气马蹄形循环"新技术以及"烟气外部再循环"的低NOx燃烧技术,既简化了蓄热式燃烧系统和操作,又取得了超低NOx排放的良好效果,NOx排放值远低于日本和美国的环保排放标准限定值.High temperature air combustion(HTAC) is an efficient and clean combustion technology developed in recent years. The fuel burns in low oxygen concentration air at high temperature. It is noted for great potential for energysaving, extremely low NOx production, and CO2 reduction. In order to make this technology more practical in industrial furnaces, the new technologies of fuelunswitching and air Utype circulation inside furnace, and exhaust gas recirculation on an experimental forge furnace were developed, which simplified the regenerative system and the operation and provided a unique way to arrange the fuel ejectors. Furthermore, extra low NOx emissions were obtained successfully on energysaving basis after applying the above method, which is far lower than the strict emission regulation of Japan and United States.

关 键 词：高温空气燃烧 超低N0x排放 燃料不换向 烟气再循环 蓄热式锻造炉 

分 类 号：TG307[金属学及工艺—金属压力加工]