氨氢混合燃烧在旋流燃烧器中的动力学特性与NO_(x)减排机理研究  

Kinetic Characterization and NO_(x)Reduction Mechanism of Mixed Ammonia-Hydrogen Combustion in Cyclone Combustor

作　　者：王凯卉 刘斌 折晓会 刘伟[3] 范昊 康宗耀 徐礼 WANG Kaihui;LIU Bin;ZHE Xiaohui;LIU Wei;FAN Hao;KANG Zongyao;XU Li(School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,Hebei Province,China;National Energy Multi-Mode Industrial Energy Storage Technology R&D Center,Shijiazhuang 050043,Hebei Province,China;Institute of Energy Resources,Hebei Academy of Sciences,Shijiazhuang 050081,Hebei Province,China)

机构地区：[1]石家庄铁道大学机械工程学院,河北省石家庄市050043 [2]国家能源多模式工业储能技术研发中心,河北省石家庄市050043 [3]河北省科学院能源研究所,河北省石家庄市050081

出　　处：《发电技术》2025年第1期171-179,共9页Power Generation Technology

基　　金：河北省科技厅战略专项(23319904L);河北省科学院科技计划项目(2023PF03)。

摘　　要：【目的】氨在实现“双碳”目标方面发挥着关键作用,然而氨燃烧速度低且NO_(x)排放较高。为提高燃烧速度,提出了采用氨氢掺混燃烧的方法。【方法】采用计算流体力学与氨氢混合燃烧机理相结合的方法,对氨气、氢气和空气的预混燃烧进行了数值模拟,并分析了当量比和入口空气流量对燃烧特性和NO_(x)排放的影响。此外,为了更好地控制燃烧过程中NO_(x)的排放,使用Chemkin软件进行了氨氢掺混燃烧反应动力学分析。【结果】在旋流燃烧器中,增加入口空气流量和当量比可以有效降低NO的排放;NO的主要生成途径为亚氨基的氧化。【结论】研究结果为旋流燃烧器中氨氢掺混燃烧特性的分析以及降低NO_(x)排放提供了参考。[Objective]Ammonia plays a key role in achieving the“dual carbon”goal,but ammonia has a low combustion rate and high NO_(x)emission.In order to improve the combustion rate,a method of ammonia-hydrogen blending combustion was proposed.[Methods]The combined computational fluid dynamics and ammonia-hydrogen mixed combustion mechanism are used to numerically simulate the premixed combustion of ammonia,hydrogen and air.The effects of equivalent ratio and inlet air flow on combustion characteristic and NO_(x)emission are analyzed.In addition,in order to better control the emission of NO_(x)during combustion,the kinetic analysis of ammonia-hydrogen blending combustion reaction is carried out using Chemkin software.[Results]Increasing the inlet air flow rate and equivalent ratio can effectively reduce NO emission in cyclone burners,and the main way of NO formation is the O_(x)idation of imino groups.[Conclusion]The results provide a reference for the characterization analysis of ammoniahydrogen miscible combustion and the reduction of NO_(x)emissions in cyclone combustors.

关 键 词：双碳 氨气掺氢 预混燃烧 数值模拟 NO_(x)排放 燃烧动力学特性 旋流燃烧器 

分 类 号：TK19[动力工程及工程热物理—热能工程]