有机固体废弃物热解气掺氨预混旋流火焰结构研究  

Premixed Swirl Flame Structure of Organic Solid Waste Pyrolysis Gas Mixed with Ammonia

作　　者：郭怡君 陈达南 李兴 李军 赖诗妮[1,3] 黄宏宇 小林敬幸[5] Guo Yijun;Chen Da’nan;Li Xing;Li Jun;Lai Shini;Huang Hongyu;Noriyuki Kobayashi(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;School of Engineering and Science,University of Science and Technology of China,Hefei 230027,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]中国科学技术大学工程科学学院,合肥230027 [3]中国科学技术大学能源科学与技术学院,广州510640 [4]江西省碳中和研究中心,南昌330096 [5]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3期239-247,共9页Journal of Combustion Science and Technology

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

摘　　要：由于有机固废热解产生的热解气热值较低,在一些燃烧器中无法燃烧,故采用旋流和掺混无碳燃料氨气的燃烧方式,以增强热解气燃烧的稳定性并减少碳排放.采用化学发光法对火焰结构进行了实验研究,基于CCD摄像系统,获得了不同当量比和掺氨比下热解气/氨气/空气预混旋流火焰中OH^(*)的化学发光分布.结果表明,不同类型热解气的旋流火焰形态结构差异较大;当量比增加到φ≥1时,OH^(*)辐射强度增强;掺氨使得热解气燃烧极限范围变窄,氨气的添加不仅会抑制OH^(*)自由基的产生,且会对火焰结构产生影响.Gas produced by the pyrolysis of organic solid waste cannot be combusted in some burners due to its low calorific value.Therefore,this study adopted the combustion methods of swirling and admixing carbon-free fuel ammonia to enhance the stability of pyrolysis gas combustion and reduce carbon emissions.The flame structure was experimentally studied by chemiluminescence method.Based on the CCD camera system,the chemilumines-cence distribution of OH^(*)in the pyrolysis gas/ammonia/air premixed swirl flame under different equivalence ratios and ammonia doping ratios was obtained.The results show that the swirl flame morphology and structure of differ-ent types of pyrolysis gas are quite different;when the equivalence ratio increases toφ≥1,the OH^(*)radiation intensity increases;the addition of ammonia narrows the combustion limit range of the pyrolysis gas,and the addition of ammonia not only inhibits the generation of OH^(*)but also has an impact on flame structure.

关 键 词：热解气体 氨气 旋流燃烧 预混火焰 OH^(*)化学发光 

分 类 号：TK16[动力工程及工程热物理—热能工程]