CFB锅炉燃烧中N_2O的生成机理与减排控制

Formation Mechanism of N_2O in CFB Boiler and Some Measures of Decomposing N_2O

循环流化床燃烧技术作为一种新型洁净煤技术,它具有高效脱硫和低NOX排放的优点。然而最近研究表明它燃烧释放出来的N2O比常规煤粉炉要高出很多,因此如何正确合理的解决这个问题将会直接影响循环流化床锅炉在我国的发展。简单介绍了N2O的生成机理,以及一些降低N2O的行之有效的方法。

As a new type of clean coal technology, the circulating fluidized bed (CFB) combustion has the advantage of efficient sulfur removal and low NOX emissions. But it was recently found that N2O released from CFB boiler is far more than that from other boilers. Now how to resolve this problem would directly affect the development of CFB technology in our county. The purpose of this paper is to describes the formation mechanism of N2O, and present some useful methods to decompose N2O.