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首页> 外文期刊>Combustion Science and Technology >A COMPREHENSIVE KINETIC MODELING OF IGNITION OF SYNGAS-AIR MIXTURES AT LOW TEMPERATURES AND HIGH PRESSURES
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A COMPREHENSIVE KINETIC MODELING OF IGNITION OF SYNGAS-AIR MIXTURES AT LOW TEMPERATURES AND HIGH PRESSURES

机译：低温高压下气-气混合气点火的综合运动学模型

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摘要

Syngas has gained increasing attention due to the possibility that it is produced by coal and biomass. In order to develop more efficient processes suitable for different combustion conditions, a study of the kinetic of syngas ignition was carried out. Several kinetic mechanisms present in the literature were compared with experimental data. Different conditions were investigated, including various parameters such as temperature, pressure, and composition. H_2O_2 + M=OH+OH+M and H + H_2O_2 = HO_2 + H_2 have been found to be dominant in the prediction of ignition times by a sensitivity analysis. Enhancements to the kinetic mechanism have been carried out by splitting the reactions in forward and backward reactions, and by adjusting values of the rate constants in the range of confidence of their evaluation. The new mechanism is able to predict quite well the behavior of syngas in all conditions examined, particularly in gas turbine conditions. Moreover, the influence of pressure and of CO concentration have been investigated with the new enhanced kinetic mechanism.
机译：由于合成气是由煤炭和生物质生产的，因此受到越来越多的关注。为了开发适合于不同燃烧条件的更有效的过程，对合成气点火的动力学进行了研究。将文献中存在的几种动力学机制与实验数据进行了比较。研究了不同的条件，包括各种参数，例如温度，压力和组成。通过敏感性分析，发现H_2O_2 + M = OH + OH + M和H + H_2O_2 = HO_2 + H_2在点火时间的预测中占主导地位。通过将反应分为正向反应和反向反应，并在其评估的置信度范围内调节速率常数的值，可以增强动力学机理。该新机制能够很好地预测在所有检查条件下，特别是在燃气轮机条件下合成气的行为。此外，已经通过新的增强动力学机理研究了压力和CO浓度的影响。

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  • 来源
    《Combustion Science and Technology》 |2010年第6期|P.692-701|共10页
  • 作者

    D. E. Cavaliere; M. de Joannon; P. Sabia; M. Sirignano; A. DAnna;

  • 作者单位

    Dipartimento di Ingegneria Chimica, Universita di Napoli 'Federico II', Napoli, Italy;

    rnIstituto di Ricerche sulla Combustione-C.N.R., Napoli, Italy;

    rnIstituto di Ricerche sulla Combustione-C.N.R., Napoli, Italy;

    rnDipartimento di Ingegneria Chimica, Universita di Napoli 'Federico II', Napoli, Italy;

    rnDipartimento di Ingegneria Chimica, Universita di Napoli 'Federico II', Piazzale V. Tecchio, 80 - Napoli, Italy;

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  • 正文语种 eng
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  • 关键词

    autoignition; gas turbine; kinetic mechanism; syngas;

    机译：自燃燃气轮机;动力学机制合成气;

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