内燃机工程2025，Vol.46Issue(4)：27-40,48,15.DOI:10.13949/j.cnki.nrjgc.2025.04.004
氨氢燃烧的NOx化学动力学机理及生成特性
Mechanisms of Chemical Kinetics and Characteristics of NOx Generation from Ammonia-Hydrogen Combustion
摘要
Abstract
Based on the reaction path analysis method,the generation and consumption of NOx(NO,NO2,N2O)and the NOx chemical kinetic mechanism were studied.The NOx mechanism was combined with the NH3/H2 combustion mechanism,and the fuel-type N*Ox and air-type NOx generation characteristics of NH3/H2 combustion were investigated using the elemental labelling method.The results show that the combined mechanism can accurately predict the ignition delay time,laminar burning velocity,and the concentration of important components in a wide range of equivalence ratios.Adding 50%H2 does not significantly affect the oxidation pathway of NH3.The addition of H2 promotes the generation of large amounts of O,H,and OH radicals,which further promotes the oxidation of NH3 and is the main reason for the significant increase in the generation of fuel-type N*O and N*O2,as well as air-type NO,NO2,and N2O.The H radicals generated by H2 combustion promote the conversion of fuel-type N*2O and fuel/air-type NN*O,thus reducing the final production of both.In addition,fuel-type N*O,N*O2,and N*2O dominate the NO,NO2,and N2O produced by pure NH3 combustion or NH3/H2 combustion with a 50%H2 ratio.关键词
NH3/H2燃烧/NO/NO2/N2O/化学反应机理/元素标记法Key words
NH3/H2 combustion/NO/NO2/N2O/chemical kinetic mechanism/element labelling method分类
能源科技引用本文复制引用
张韦,陈帅,李泽宏,陈朝辉,周马益,马珍珠..氨氢燃烧的NOx化学动力学机理及生成特性[J].内燃机工程,2025,46(4):27-40,48,15.基金项目
国家自然科学基金重点项目(22362018) （22362018）
云南省科技厅重点项目(202501AS070151) （202501AS070151）
天津大学内燃机实验室重点项目(K2024-04) National Natural Science Foundation of China(22362018) （K2024-04）
Yunnan Fundamental Research Projects(202501AS070151) （202501AS070151）
Tianjin University Internal Combustion Engine Laboratory Key Project(K2024-04) （K2024-04）
