根据燃烧生成机理不同,氮氧化物主要分为热力型、快速型、燃料型3种,其中天然气锅炉排放氮氧化物以燃料型为主。详细综述了燃料分级、空气分级、浓淡燃烧、燃气循环、催化还原、MILD燃烧等几种低氮燃烧技术的最新研究进展,总结了每种技术的优缺点,并对未来发展趋势进行了展望。

According to combustion generation mechanism,nitrogen oxides are mainly divided into three types:thermal type,rapid type and fuel type,among which natural gas boilers mainly discharge fuel type of nitrogen oxides.Latest advances on several low-nitrogen combustion technologies are reviewed,including fuel classification,air classification,rich-lean combustion,fuel gas cycle,catalytic reduction technologies,etc.Their advantages and disadvantages are summed up,and the development in the future is expected.