掺氨甲烷火焰自由基化学发光燃烧特性研究  

Study on the Characteristics of Free Radical Chemiluminescence Combustion in Ammonia Doped Methane Flame

作　　者：张文举 宋旭东 吴润民 景园园 张俊先 白永辉 于广锁[3] ZHANG Wenju;SONG Xudong;WU Runmin;JING Yuanyuan;ZHANG Junxian;BAI Yonghui;YU Guangsuo(State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(School of Chemistry and Chemical Engineering,Ningxia University),Yinchuan 750021,Ningxia Hui Autonomous Region,China;Shandong Yankuangguotuo Science&Engineering Co.,Ltd.,Jining 273500,Shandong Province,China;Institute of Clean Coal Technology,East China University of Science and Technology,Xuhui District,Shanghai 200237,China)

机构地区：[1]省部共建煤炭高效利用与绿色化工国家重点实验室(宁夏大学化学化工学院),宁夏回族自治区银川市750021 [2]山东兖矿国拓科技工程有限公司,山东省济宁市273500 [3]华东理工大学洁净煤技术研究所,上海市徐汇区200237

出　　处：《中国电机工程学报》2025年第5期1826-1837,I0018,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(22108132,U21A20318);宁夏自然科学基金项目(2023AAC01001)。

摘　　要：NH_(3)与CH_(4)的混合可有效改善NH_(3)的燃烧性能,通过模拟计算,可以更好地理解NH_(3)掺加对火焰行为的影响。该文使用ANSYS进行模拟研究,对不同掺NH_(3)比及不同当量比的NH_(3)/CH_(4)/O2燃烧进行数值计算。结果表明:掺入NH_(3)导致火焰温度降低,温度核心分布区域随掺NH_(3)比增加而向火焰下游移动,随当量比增大而向火焰根部移动;当掺NH_(3)比增大时,OH^(*)与CH^(*)峰值含量下降,OH^(*)峰值位置向火焰下游移动,CH^(*)峰值位置则不发生变化,但CH^(*)径向位置呈现多峰分布;当当量比增大时,OH^(*)与CH^(*)峰值含量上升,OH^(*)分布区域面积增加,峰值位置向靠近火焰根部方向移动,CH^(*)分布区域则趋于集中并向远离火焰根部处移动,径向位置仍呈现多峰分布;此外,化学动力学分析表明,掺入NH_(3)导致OH^(*)生成路径发生改变,OH^(*)产率随掺NH_(3)比增大而减小。The mixture of NH_(3)with CH_(4)can effectively improve the combustion performance of NH_(3),and the effect of NH_(3)addition on flame behaviours can be better understood through simulations.The article uses ANSYS for simulation research and conducts numerical calculations on the combustion of NH_(3)/CH_(4)/O2 with different NH_(3)addition ratios and different equivalent ratios.The results show that:the addition of NH_(3)leads to a decrease in flame temperature,and the temperature core distribution region moves downstream of the flame with the increase of NH_(3)addition ratio,while moving towards the root of flame with the increase of equivalent ratio;when the addition ratio of NH_(3)increases,the peak content of OH^(*)and CH^(*)decreases,and the position of OH^(*)peak moves downstream of the flame,while the position of CH^(*)peak remains unchanged,but the radial position of CH^(*)shows a multimodal distribution;When the equivalent ratio increases,the peak content of OH^(*)and CH^(*)rises,and the area of OH^(*)distribution area increases,the peak position moves towards the direction of the flame root,and the CH^(*)distribution area tends to be concentrated and moves away from the flame root,radial position still presents a multimodal distribution.In addition,chemical kinetic analyses show that the addition of NH_(3)leads to a change in the OH^(*)generation pathway,and the rate of production OH^(*)decreases with the addition ratio of NH_(3)increasing.

关 键 词：NH3/CH4燃烧 掺NH3比 当量比 化学发光 反应路径 

分 类 号：TK16[动力工程及工程热物理—热能工程]