乙醇喷雾/氨气/甲烷三元燃料的燃烧特性
Combustion Characteristics of Ternary Blends of Ethanol Spray/Ammonia/Methane
季泽安 1张振东 1李星 2李军 3CHONG Cheng Tung4
作者信息
- 1. 上海交通大学中英国际低碳学院,上海 201306
- 2. 中国矿业大学低碳能源与动力工程学院,徐州 221116
- 3. 中国科学院广州能源研究所,广州 510640
- 4. China-UK Low Carbon College,Shanghai Jiao Tong University,Shanghai 201306,China
- 折叠
摘要
采用旋流喷雾燃烧器,通过分析燃烧时的火焰结构、OH*和NH2*的荧光信号、火焰光谱以及污染物排放,探究了甲烷、乙醇和氨气3种燃料在不同当量比、摩尔分数和不同雾化空燃比(ALR)下对燃烧的影响和燃烧后烟气中NO、NO2、CO含量的变化趋势.虽然氨气的使用会产生高氮氧化物的排放,但采用三元燃料掺混燃烧(特别是在乙醇占比较高)时,CO和NO的排放量相对较低,燃烧效果最佳.在0.45～0.70当量比范围内,提高ALR有助于喷雾雾化以产生更小的液滴粒径,促进液雾和气体的混合及燃烧,从而降低CO排放.通过三元燃料掺混对燃料的改性,以及燃烧工况的调控作为氨燃烧组织优化的手段,对工业上高效使用氨燃料和减少污染物排放具有指导意义.
Abstract
A swirl spray burner is used to measure and analyze the flame structure,chemiluminescence signals of OH*and NH2*,flame spectra and pollutant emissions during combustion,while examining the effects of varying methane,ethanol and ammonia mixture fuel composition and atomizing air-to-liquid ratios(ALR)on combustion and the trends of NO,NO2and CO emissions.Even though the use of ammonia results in high NOx emissions,the use of ternary blends for co-combustion,especially when ethanol mole fraction is high,the CO and NO emissions can be reduced.Within the equivalence ratio of 0.45～0.70,increasing the ALR results in more complete spray at-omization,which promotes mixing of fuel vapour with gas,leading to improved combustion and subsequently re-duced CO emissions.The use of ternary blends and control the combustion parameters are measures that enable ef-fective ammonia combustion,which serves as a guide for pollutant emission reductions and ammonia utilization for the industries.
关键词
氨气/乙醇/雾化空燃比/烟气排放/三元混合燃料Key words
ammonia/ethanol/atomizing air-fuel ratio/flue gas emissions/ternary blend fuel引用本文复制引用
基金项目
上海市科委"科技创新行动计划"国际科技合作项目(23160712400)
出版年
2024
NETL
NSTL
维普
万方数据