中国电机工程学报2016，Vol.36Issue(24)：6849-6858,10.DOI:10.13334/j.0258-8013.pcsee.160167
燃料分级与烟气再循环对天然气低氮燃烧特性影响机理
Low NOx Combustion Mechanism of a Natural Gas Burner With Fuel-staged and Flue Gas Recirculation
摘要
Abstract
With the more stringent NOx emission limit from natural gas fired boiler, the natural gas burner with only one type of low NOx combustion technologies cannot meet the emission requirement of new-issued standard in Beijing. Thus a new fuel-staged low NOx burner was developed with the help of the external flue gas recirculation (FGR), where the NOx emission goal is below 30 mg/m3. And an experiment was carried out on the 1.4MWth pilot-scale boiler, and the effects of staged fuel, ratio of flue gas recirculation and excess air on the combustion characteristics and NOx formation were extensively studied. The results shows that there is an important effect of secondary fuel ratio, excess air and the ratio of flue gas recirculation on the flame stability, and the formation of NOx. When the ratio of flue gas recirculation increases to 10%, 60% of NOx emission will be cut down. A fan-shaped stable flame area can be obtained by the effect of ratio of the ratio of FGR and secondary fuel stream.关键词
天然气/低氮燃烧器/燃料分级/烟气再循环/燃烧稳定性Key words
natural gas/low NOx burner/fuel stage/flue gas recirculation/flame stability分类
能源科技引用本文复制引用
宋少鹏,卓建坤,李娜,姚强,焦伟红,宋光武,潘涛..燃料分级与烟气再循环对天然气低氮燃烧特性影响机理[J].中国电机工程学报,2016,36(24):6849-6858,10.基金项目
国家自然科学基金项目(51576111)；北京市科技计划课题(D141100001114001)。 Project Supported by National Natural Science Foundation of China (51576111) （51576111）
Research program of Beijing (D141100001114001) （D141100001114001）
