过量空气系数和氨气浓度对CH_(4)/NH_(3)MILD燃烧特性的数值研究  

Numerical Study on MILD Combustion Characteristics of CH_(4)/NH_(3)With Excess Air Coefficient and Ammonia Concentration

作　　者：匡玉成 王亚飞 韩大伟 王超俊[2] KUANG Yucheng;WANG Yafei;HAN Dawei;WANG Chaojun(Beijing Aerospace Petrochemical EC and EP Technology Corporation Limited(BAEEC),Haidian District,Beijing 100176,China;School of Mechanical Electronics and Control Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044,China)

机构地区：[1]北京航化节能环保技术有限公司,北京市海淀区100176 [2]北京交通大学机械与电子控制工程学院,北京市海淀区100044

出　　处：《中国电机工程学报》2025年第4期1542-1549,I0026,共9页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

摘　　要：氨气(NH_(3))作为一种兼具储能的无碳燃料,在能源领域具有极大的应用前景。然而,NH_(3)的燃烧特性与常规碳氢燃料有着明显差异。该文通过数值模拟方法,研究了CH_(4)/NH_(3)的混合燃料低氧稀释(moderate or intense low-oxygen dilution,MILD)燃烧特性。结果表明,在甲烷MILD燃烧中添加NH_(3)使出口NO排放亟剧增加。过量空气系数大于1时,减小过量空气系数使NO和CO的排放降低。NH_(3)中的N元素转化成NO的转化率随燃料中NH_(3)的增加和过量空气系数的降低而减小。Ammonia,as a carbon-free fuel with energy storage,has great application prospects in the energy field.However,the ammonia combustion characteristics are significantly different from conventional hydrocarbon fuels.In this paper,the moderate or intense low-oxygen dilution(MILD)combustion characteristics of CH_(4)/NH_(3)mixture are studied by using the numerical simulation method.The results show that adding NH_(3)to methane MILD combustion sharply increases outlet NO emissions.When the excess air coefficient is greater than 1,reducing it will lead to a reduction in the emission of NO and CO.The conversion rate of N in NH_(3)to NO decreases with the increase of ammonia in mixture and the decrease of the excess air ratio.

关 键 词：低氧稀释(MILD)燃烧 氨气掺烧 过量空气系数 NO_(x)排放 燃烧特性 

分 类 号：TQ038.1[化学工程]