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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Experimental investigation in rich premixed acetylene flames
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Experimental investigation in rich premixed acetylene flames

机译：富乙炔预混火焰的实验研究

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Four low pressure premixed acetylene-oxygen-argon flames with equivalence ratio (phi) of 1.00-1.50-2.00 and 2.25 have been investigated. The initial percentage of O-2 has been kept identical in all flames to facilitate comparisons between flames. Signal intensity profiles of stable, atomic and radical species were measured by using mass spectrometry coupled with molecular beam sampling. Absolute concentrations have been obtained by an appropriate calibration and by measuring the corresponding temperature profiles in each individual flames by means a PtRh6%/PtRh30% thermocouple. An increase of the maximum mole fractions Of C3H3, C4H2, C4H4, C4H6, C6H2, C6H4 and C6H6 with the equivalence ratio is demonstrated. Rate coefficients of consumption reactions of acetylene with oxygen atoms and hydroxyl radicals have been deduced and compared with the literature data.C2H2 + O --> Products k(3) = (4.27 +/- 2.13) x 10(14) exp(-3331/T) cm(3)mol(-1)s(-1)C2H2 + OH --> CH3 + CO k(4a) = (4.0 +/- 1.6) x 10(13) exp(-6590/T) cm(3)mol(-1)s(-1)Rate coefficients of reactions of H atoms with C2H2, C4H2, C4H4 and C6H2 have been determined around 1500 K:C2H6 + H --> Products k(5) = 1.78 x 10(11) cm(3) mol(-1)s(-1)C4H2 + H Products --> k(8) = 4.10 x 10(11) cm(3) mol(-1)s(-1)C4H4 + H --> Products k(9) = 1.11 x 10(12) cm(3)mol(-1)s(-1)C6H2 + H --> Products k(10) = 1.62 x 10(12) cm(3)mol(-1)s(-1)(C) 2004 Elsevier Inc. All rights reserved.
机译：已经研究了四种低压预混的乙炔-氧气-氩气火焰，当量比（phi）为1.00-1.50-2.00和2.25。 O-2的初始百分比在所有火焰中均保持相同，以方便比较火焰。稳定，原子和自由基物质的信号强度分布通过质谱结合分子束采样进行测量。通过适当的校准以及通过使用PtRh6％/ PtRh30％热电偶测量每个单独火焰中的相应温度曲线，可以获得绝对浓度。证明了C3H3，C4H2，C4H4，C4H6，C6H2，C6H4和C6H6的最大摩尔分数随当量比的增加。推导了乙炔与氧原子和羟基自由基的消耗反应速率系数，并与文献数据进行了比较.C2H2 + O->乘积k（3）=（4.27 +/- 2.13）x 10（14）exp（- 3331 / T）cm（3）mol（-1）s（-1）C2H2 + OH-> CH3 + CO k（4a）=（4.0 +/- 1.6）x 10（13）exp（-6590 / T ）cm（3）mol（-1）s（-1）H原子与C2H2，C4H2，C4H4和C6H2反应的速率系数已确定在1500 K：C2H6 + H->乘积k（5）= 1.78 x 10（11）cm（3）mol（-1）s（-1）C4H2 + H产物-> k（8）= 4.10 x 10（11）cm（3）mol（-1）s（-1 C4H4 + H->乘积k（9）= 1.11 x 10（12）cm（3）mol（-1）s（-1）C6H2 + H->乘积k（10）= 1.62 x 10（12） ）cm（3）mol（-1）s（-1）（C）2004 Elsevier Inc.保留所有权利。

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