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首页> 外文期刊>Fuel >An experimental comparison of non-premixed bio-butanol flames with the corresponding flames of ethanol and methane
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An experimental comparison of non-premixed bio-butanol flames with the corresponding flames of ethanol and methane

机译：非预混生物丁醇火焰与相应的乙醇和甲烷火焰的实验比较

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摘要

Butanol non-premixed flames were studied in a counter-flow burner configuration in view of the emergence of methods of production of this fuel from biological agricultural sources. Major combustion species were measured using line-Raman imaging and K-type thermocouples were used in order to perform temperature scans across the flame. Also, extinction strain rates were measured as a function of overall stoichiometry. Of particular importance was the comparison with flames of methane (which is not oxygenated) as well as ethanol which is a currently widely employed bio-fuel. It was shown that butanol flames could sustain higher strain rates at extinction than ethanol flames but significantly smaller than methane flames. The extinction strain rate of methane-butanol mixtures were shown to be smaller than weighted averages of the extinction strain rates of the flames of the two pure components. No leakage of C-H containing species through the flame was measured for either of the flames. For the strongly diluted flames under consideration, it was shown that temperature followed a very closely linear relation with nitrogen concentration. For the same nitrogen concentration, butanol exhibited smaller temperature at the same overall stoichiometry and heat release, because of the higher average molecular weight of the fuel stream. Consistently with theoretical predictions, a decrease in mixing layer thickness was measured with increasing strain.
机译：考虑到从生物农业来源生产这种燃料的方法的出现，在逆流燃烧器配置中研究了丁醇非预混火焰。使用线拉曼成像测量主要燃烧物质，并使用K型热电偶对火焰进行温度扫描。同样，消光应变率是作为整体化学计量的函数来测量的。尤其重要的是与甲烷火焰（未氧化）和乙醇（目前广泛使用的生物燃料）进行比较。结果表明，丁醇火焰在熄灭时比乙醇火焰具有更高的应变率，但比甲烷火焰小得多。甲烷-丁醇混合物的消光应变速率显示为小于两种纯组分火焰消光应变速率的加权平均值。对于任一火焰，均未测量到含C-H的物质通过火焰泄漏。对于考虑中的强稀释火焰，结果表明温度与氮浓度呈非常紧密的线性关系。对于相同的氮浓度，由于燃料流的平均分子量较高，因此在相同的总体化学计量和放热条件下，丁醇的温度较低。与理论预测一致，随着应变的增加，测量到混合层厚度的减小。

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  • 来源
    《Fuel》 |2011年第1期|p.255-262|共8页
  • 作者

    Maria S. Agathou; Dimitrios C. Kyritsis;

  • 作者单位

    University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, Urbana, IL 61801, USA;

    University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, Urbana, IL 61801, USA;

  • 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

    strained flames; bio-butanol; non-premixed flames;

    机译：烈焰生物丁醇非预混火焰;

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