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首页> 外文期刊>Fuel >Study of soot formation during the combustion of Diesel, rapeseed methyl ester and their surrogates in turbulent spray flames
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Study of soot formation during the combustion of Diesel, rapeseed methyl ester and their surrogates in turbulent spray flames

机译：湍流喷雾火焰中柴油，油菜籽甲酯及其代用品燃烧过程中烟尘形成的研究

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摘要

Effects induced by the use of rapeseed methyl ester (RME) as additive or Diesel substitute on the soot formation process have been studied in turbulent spray flames. Investigations have been carried out by coupling Laser-Induced Incandescence and Fluorescence (LII/LIF) at 1064, 532 and 266 nm. LII and LIF profiles obtained with fuels containing various amounts of ester (from 10 to 100 vol.%) showed that the addition of RME to a European low-sulphur Diesel or to a Diesel surrogate (a n-decane/1 -methylnaph-thalene blend derived from the 'IDEA' fuel) induces significant reductions of the quantities of soot and soot precursors (including high-number ring aromatic species and light soot precursors). The study of different RME surrogates (n-decane, n-hexadecane, 1-octadecene and methyl oleate) also revealed that the details of the oxidation of biodiesels could be mimicked only using large methyl esters as surrogates. N-alkanes and n-alkenes were found to be unable to reproduce the soot formation process occurring during the combustion of large fatty acid methyl esters (FAME) such as those contained in RME. The analysis of the correlation existing between the threshold soot index (TSI) and the peak soot volume fraction measured in flames of m-IDEA/RME blends containing up to 80% of ester allowed the identification of the different effects involved in the soot reduction (i.e. the dilution and the ester functional group effects). The estimation of their relative contribution has also been investigated. Finally, the LII fluence curves and time decays obtained at different heights above the burner in flames burning Diesel and a Diesel/RME mixture have been compared. By this way, it has been demonstrated that biodiesel soot are bigger than Diesel ones in the soot formation region. On the other hand, particles oxidize much faster when RME is added to Diesel.
机译：在湍流的喷雾火焰中，已经研究了使用油菜籽甲酯（RME）作为添加剂或柴油替代品引起的烟灰形成过程的影响。已经通过在1064、532和266 nm处耦合激光诱导的白光和荧光（LII / LIF）进行了研究。用含各种量的酯（10％至100％（体积））的燃料获得的LII和LIF谱表明，RME添加到欧洲低硫柴油或柴油替代物中（正癸烷/ 1-甲基萘-萘）源自“ IDEA”燃料的混合气可显着减少烟灰和烟灰前体（包括大量环芳族物质和轻烟灰前体）的数量。对不同的RME替代物（正癸烷，正十六烷，1-十八碳烯和油酸甲酯）的研究还表明，只有使用大的甲基酯作为替代物，才能模仿生物柴油的氧化细节。发现正构烷烃和正构烯烃不能重现燃烧大型脂肪酸甲酯（FAME）（如RME中所含的那些）过程中发生的烟灰形成过程。分析阈值烟灰指数（TSI）和峰值含烟量的m-IDEA / RME共混物（含量最高为80％的酯）之间存在的相关性，从而可以确定烟灰减少所涉及的不同影响（即稀释和酯官能团效应）。还对它们的相对贡献进行了估算。最后，比较了燃烧Diesel和Diesel / RME混合物的火焰在燃烧器上方不同高度获得的LII能量密度曲线和时间衰减。通过这种方式，已经证明在烟灰形成区域中生物柴油烟灰比柴油烟灰大。另一方面，将RME添加到柴油中时，颗粒的氧化速度更快。

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  • 来源
    《Fuel》 |2013年第5期|147-161|共15页
  • 作者

    R. Lemaire; S. Bejaoui; E. Therssen;

  • 作者单位

    Universite Lille Nord de France, F-59000 Lille, France, Mines Douai, EI, F-59500 Douai, France;

    Universite Lille Nord de France, F-59000 Lille, France,Laboratoire PC2A, UMR CNRS 8522, F-59655 Villeneuve d'Ascq, France;

    Universite Lille Nord de France, F-59000 Lille, France,Laboratoire PC2A, UMR CNRS 8522, F-59655 Villeneuve d'Ascq, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diesel; ester; surrogate; soot; TSI;

    机译：柴油机;酯;代孕煤烟;贸易支持机构;

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