季泽安, 张振东, 李星, 李军. 乙醇喷雾/氨气/甲烷三元燃料的燃烧特性[J]. 华南师范大学学报(自然科学版), 2024, 56(1): 27-35. doi: 10.6054/j.jscnun.2024004
引用本文: 季泽安, 张振东, 李星, 李军. 乙醇喷雾/氨气/甲烷三元燃料的燃烧特性[J]. 华南师范大学学报(自然科学版), 2024, 56(1): 27-35. doi: 10.6054/j.jscnun.2024004
JI Zean, CHONG Cheng Tung, LI Xing, LI Jun. Combustion Characteristics of Ternary Blends of Ethanol Spray/Ammonia/Methane[J]. Journal of South China Normal University (Natural Science Edition), 2024, 56(1): 27-35. doi: 10.6054/j.jscnun.2024004
Citation: JI Zean, CHONG Cheng Tung, LI Xing, LI Jun. Combustion Characteristics of Ternary Blends of Ethanol Spray/Ammonia/Methane[J]. Journal of South China Normal University (Natural Science Edition), 2024, 56(1): 27-35. doi: 10.6054/j.jscnun.2024004

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

  • 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, NO2 and 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 atomization, which promotes mixing of fuel vapour with gas, leading to improved combustion and subsequently reduced CO emissions. The use of ternary blends and control the combustion parameters are measures that enable effective ammonia combustion, which serves as a guide for pollutant emission reductions and ammonia utilization for the industries.

     

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