层流预混乙烷和丙烯火焰中PAHs荧光光谱分析

发布时间：2018-04-27 03:01

本文选题：激光诱导荧光(LIF) + 多环芳香烃(PAHs)　；参考：《中国电机工程学报》2016年16期

【摘要】：应用激光诱导荧光(LIF)技术对层流预混乙烷和丙烯火焰中多环芳香烃(PAHs)荧光光谱进行测量,探究PAHs在乙烷和丙烯层流预混火焰中的空间分布及当量比对其生成的影响。实验研究结果表明:乙烷和丙烯不同火焰高度下PAHs荧光光谱峰值位置不发生转移,均在500nm左右;随着火焰高度的增加,PAHs荧光光谱强度随之增强;当量比对火焰中PAHs的生成具有重要影响,随着当量比的增加,PAHs荧光光谱强度逐渐增强且在较高当量比下变化显著;比较乙烷和丙烯层流预混火焰中PAHs荧光光谱归一化强度,发现燃料碳链长度以及碳链饱和度会对火焰中PAHs的生成产生重要影响。
[Abstract]:The laser induced fluorescence (LIF) technique was used to measure the fluorescence spectra of polycyclic aromatic hydrocarbons (PAHs) in laminar premixed ethane and propylene flame. The spatial distribution of PAHs in the premixed flame of ethane and propylene and the effect of equivalent ratio on its formation were investigated. The experimental results show that PAHs fluorescence peaks at different flame heights of ethane and propylene With the increase of flame height, the fluorescence intensity of PAHs increases with the increase of the flame height, and the equivalent ratio has an important influence on the formation of PAHs in the flame. With the increase of the equivalent ratio, the fluorescence intensity of the PAHs increases gradually and changes significantly at the higher equivalent ratio; PA in the laminar flow premixed flame of ethane and propylene is compared with PA The normalized intensity of Hs fluorescence spectra shows that the length of fuel carbon chain and the saturation of carbon chain will have an important effect on the formation of PAHs in flame.

【作者单位】：动力机械与工程教育部重点实验室(上海交通大学);
【基金】：国家重点基础研究发展计划项目(973项目)(2013CB 228502)~~
【分类号】：X701

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