河北科技大学学报2025，Vol.46Issue(6)：684-693,10.DOI:10.7535/hbkd.2025yx06010
燃气分级耦合旋流结构对燃烧性能的影响
Influence of gas staged coupling swirl structure on combustion performance
摘要
Abstract
In order to reduce the excessive nitrogen oxide(NOx)emissions from traditional swirl burners in heat treatment furnaces,a low nitrogen burner optimization method based on gas classification technology was proposed.Firstly,the ordinary swirl burner was used as the basic structure,and the gas grading structure was added without significantly increasing fuel consumption.Secondly,the ANSYS Fluent software system was used to simulate the influence of the blade angle and air flow rate of the first-stage stator cascade on the NOx generation.Finally,by comparing the mixing uniformity,temperature distribution and NOx concentration field,the optimal parameter combination was determined.The results show that the gas grading structure significantly improves the mixing efficiency of secondary gas and swirling air,the heat load distribution is more uniform,and the thermal NOx production is reduced.When the first-stage stator cascade blade angle is 30°,the air flow rate is 1.15 m/s,and the proportion of primary gas is 65%,the burner performance is optimal,and the NOx emission is significantly reduced compared to the traditional structure.This study provides an optimization direction for the design of low nitrogen burners and has reference value for the environmental protection transformation of industrial combustion equipment.关键词
燃烧学/低氮燃烧技术/天然气燃烧/耦合低氮技术/数值模拟/旋流燃烧Key words
combustion science/low nitrogen combustion technology/natural gas combustion/coupling low nitrogen technol-ogy/numerical simulation/swirl combustion分类
能源科技引用本文复制引用
乔方琪,米翠丽,武哲,崔海亭,张凯,吴景昊,蒋静智..燃气分级耦合旋流结构对燃烧性能的影响[J].河北科技大学学报,2025,46(6):684-693,10.基金项目
国家自然科学基金(52406087) （52406087）
驻冀高校重大科技专项(241080407) （241080407）
中央引导地方科技发展资金项目(246Z4502G) （246Z4502G）
