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Oxidation of small alkyl esters in flames

机译:火焰中小烷基酯的氧化

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摘要

The oxidation characteristics of several small methyl and ethyl esters with carbon number less than six were investigated in laminar flames. The kinetics of such fuels are subsets of those of larger alkyl esters that are constituents of practical biodiesel fuels. A total of seven fuels, namely methyl formate, methyl acetate, methyl propionate, methyl butanoate, ethyl formate, ethyl acetate, and ethyl propionate were considered. Experiments were conducted at atmospheric pressure, elevated reactant temperatures, and over a wide range of equivalence ratios. Laminar flame speeds were determined in the counterflow configuration in which flow velocities were measured using particle image velocimetry. Several detailed kinetic models were tested against the experimental data, and insight was provided into the high-temperature combustion kinetics of the aforementioned fuels. Based on comparisons between experimental and computed results it became apparent that the chemistry of alkyl-ester combustion chemistry is evolving and much needs to be done in order to derive improved rate constants for a wide range of elementary steps.
机译:在层流火焰中研究了几种碳数小于六的小的甲基和乙基酯的氧化特性。这种燃料的动力学是较大的烷基酯的动力学的子集,后者是实用的生物柴油燃料的组成部分。总共考虑了七种燃料,即甲酸甲酯,乙酸甲酯,丙酸甲酯,丁酸甲酯,甲酸乙酯,乙酸乙酯和丙酸乙酯。在大气压力,升高的反应物温度和相当大的当量比范围内进行实验。在逆流配置中确定层流火焰速度,在逆流配置中使用粒子图像测速仪测量流速。根据实验数据测试了几个详细的动力学模型,并提供了对上述燃料的高温燃烧动力学的了解。基于实验结果和计算结果之间的比较,很明显,烷基酯燃烧化学的化学性质正在发展,为了在各种基本步骤中获得更高的速率常数,需要做很多工作。

著录项

  • 来源
    《Combustion and Flame》 |2014年第3期|810-817|共8页
  • 作者单位

    Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, USA;

    Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, USA;

    Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;

    Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, USA;

    Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1211, USA;

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

    Flame propagation; Laminar flames; Alkyl esters; Methyl esters; Ethyl esters;

    机译:火焰传播;层流火焰烷基酯;甲酯;乙酯;

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