气体燃料再燃对NOx还原的影响  

Effects of Gaseous Fuel Reburning on NOx Reduction

作　　者：钟北京[1] 傅维标[1] 

机构地区：[1]清华大学工程力学系

出　　处：《热能动力工程》1999年第6期419-423,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金!资助项目 ( 5 96 0 6 0 11)

摘　　要：气体燃料再燃是研究较多的降低烟气中NOx含量最有效的方法之一。本文以典型的一次燃烧区烟气成分为模拟烟气,研究了不同的气体燃料(CH4,C2H2和C2H4)作为再燃燃料时,再燃区燃烧工况(空气过量系数和再燃温度)对NOx再燃过程和NOx还原率的影响。通过计算发现,不同组分的气体燃料、再燃区空气过量系数及再燃区温度对NOx的再燃过程和NOx还原率都有重要的影响。Gaseous fuel reburning pertains to one of the most effective methods being extensively studied for the reduction of NOx content in flue gases. With the gases in a typical primary combustion zone serving as simulation gases the authors have studied the influence of different gaseous fuels (CH 4, C 2H 2 and C 2H 4) and the reburning zone combustion conditions (excess air coefficient and reburning temperature) on NOx reburning process and its reduction. Through calculations it is found that different compositions of gaseous fuels, the excess air coefficient and firing temperature in the reburning zone exercise a significant influence on the NOx reburning process and NOx reduction rate.

关 键 词：燃料再燃 气体燃料 NOx还原 

分 类 号：TK16[动力工程及工程热物理—热能工程]