添加H_(2)对NH_(3)/空气旋流火焰OH^(*)化学发光的影响  

Effects of H2 Addition on the OH^(*) Chemiluminescence of NH3/Air Swirl Flame

作　　者：陈达南 李军 李兴[1] 郭怡君 赖诗妮 黄宏宇 小林敬幸[4] Chen Da’nan;Li Jun;Li Xing;Guo Yijun;Lai Shini;Huang Hongyu;Kobayashi Noriyuki(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;School of Energy Science and Engineering,University of Science and Technology of China,Guangzhou 510640,China;Jiangxi Carbon Neutralization Research Center,Nanchang 330096,China;Department of Chemical Engineering,Nagoya University,Nagoya,Aichi 464-8603,Japan)

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]中国科学技术大学能源科学与技术学院,广州510640 [3]江西省碳中和研究中心,南昌330096 [4]名古屋大学化学工程系,名古屋464-8603

出　　处：《燃烧科学与技术》2024年第5期466-472,共7页Journal of Combustion Science and Technology

基　　金：江西省碳中和研究中心双碳科技创新项目(2022JXST03);广东省基础与应用基础研究基金(2022B1515120047).

摘　　要：火焰的化学发光特性是了解氨作为无碳替代燃料时的火焰结构和反应机理的基本方法.本研究通过实验获得了不同当量比和H_(2)添加量的NH_(3)/空气旋流火焰中的OH^(*)化学发光分布和形成特征,比较了不同条件下OH^(*)层分布特性及火焰燃烧现象的影响.结果表明,随着当量比的增加,OH^(*)辐射峰增加,且当量比的增加显著增强了OH^(*)的整体化学发光强度.在贫燃料火焰中,当量比效应大于NH_(3)稀释效应,而在当量和富燃料条件下,这两种效应相当.随着掺氢比例的增加,OH^(*)化学发光强度逐渐增加,OH^(*)峰值位置逐渐从下游火焰向上游移动.The chemiluminescence properties of flames are fundamental to understanding the flame structure and reaction mechanism of ammonia as a carbon-free alternative fuel.In this study,the distribution and formation characteristics of OH^(*)chemiluminescence in NH_(3)/air swirling flames with different equivalence ratios and H_(2) addition ratios were obtained experimentally,and the effects of OH^(*)layer distribution characteristics and flame combustion phenomena were compared under different conditions.The results show that the peak value of OH^(*)radiation increases with the increase of equivalence ratio,and the increase of equivalence ratio significantly enhances the overall chemiluminescence intensity of OH^(*).In a lean fuel flame,the equivalence ratio effect is greater than the NH_(3) dilution effect,while the two effects are comparable under equivalence and rich fuel conditions.With the increase of hydrogen addition ratio,the OH^(*)chemiluminescence intensity gradually increases,and the position of maximum OH^(*)gradually moves from the downstream flame to the upstream.

关 键 词：OH^(*)化学发光 氨燃烧 当量比 加氢比例 旋流火焰 

分 类 号：TK16[动力工程及工程热物理—热能工程]