河北工业科技2025，Vol.42Issue(6)：566-574,9.DOI:10.7535/hbgykj.2025yx06009
空气分级旋流低氮燃烧器数值模拟研究
Numerical simulation study on low-nitrogen combustion air staged swirl burner
摘要
Abstract
To improve the furnace temperature uniformity of heat treatment furnaces and reduce nitrogen oxide(NOx)emissions,this study investigated the effects of different swirl angles on the temperature distribution and NOx emissions in a methane combustion chamber.Numerical simulations were performed on a swirl burner and a traditional fan-blade burner using ANSYS Fluent software.The influence of the secondary air swirl angle on combustion characteristics was analyzed to determine the optimal swirl angle.The results show that compared with the traditional fan-blade burner,the swirl burner significantly enhances turbulent mixing intensity through air-staged mixing strategy.Specifically,the combustion efficiency is increased by 12.8%,and the NOx emissions are reduced to 25.635 mg/m3(a reduction of 43.36%).Under specific operating parameters(excess air ratio of 1.1,swirl angle of 30°),the fuel and air achieve an optimal mixing state:the NOx emission concentration is 18.7%lower than the limit specified in the national standard(GB 13271-2014),and the furnace temperature uniformity is improved by 2.82%.This research results are applicable to scenarios with high requirements for furnace temperature uniformity and environmental performance,and can provide theoretical basis and technical reference for the low-carbon and efficient operation of heat treatment furnaces.关键词
燃烧学/低氮燃烧技术/烟气再循环/旋流燃烧/数值模拟Key words
science of combustion/low NOx combustion technology/flue gas recirculation/swirl combustion/numerical simulation分类
能源科技引用本文复制引用
田景茹,崔海亭,甘拥,王亚薇,姚宁,张凯..空气分级旋流低氮燃烧器数值模拟研究[J].河北工业科技,2025,42(6):566-574,9.基金项目
国家自然科学基金青年基金项目(52406087) （52406087）
中央引导地方科技发展资金项目(254Z1903G) （254Z1903G）
驻冀高校重大科技专项资助项目(241080407A) （241080407A）
