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首页> 外文期刊>Analytical and Bioanalytical Chemistry >Investigation of NO x precursor compounds and other combustion by-products in the primary combustion zone of a waste-incineration plant using on-line, real-time mass spectrometry and Fourier-transform infrared spectrometry (FTIR)
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Investigation of NO x precursor compounds and other combustion by-products in the primary combustion zone of a waste-incineration plant using on-line, real-time mass spectrometry and Fourier-transform infrared spectrometry (FTIR)

机译：使用实时实时质谱和傅里叶变换红外光谱（FTIR）研究垃圾焚烧厂一次燃烧区中的NO x 前体化合物和其他燃烧副产物

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摘要

On-line analysis of trace and bulk gas compounds in the burning chamber of a waste-incineration plant has been performed, with high temporal resolution, by use of a variety of distinctly different measurement techniques. Time-of-flight mass spectrometry was performed with simultaneous use of three ionization techniques—resonance-enhanced multiphoton ionization (REMPI), single-photon ionization (SPI), and electron-impact ionization (EI). Chemical-ionization mass spectrometry (CIMS), Fourier-transform infrared spectrometry (FTIR), and electrochemical methods were also used. Sampling was conducted by means of a newly developed air-cooled stainless steel lance, to cope with the high temperatures and elevated particle concentrations at the sampling location. Nitrogen species were mainly nitrogen monoxide, ammonia, and hydrogen cyanide (HCN), with a small amount (approximately 0.3%) of aromatic nitrogen compounds. NO, NH3, and HCN are the main contributors to the NO x -formation process in the postulated fuel–NO reaction scheme dominant at this location. The NO recycling process thereby plays a major role. Changes in plant operating conditions have a noticeable impact only when the air supply is varied. For example, reduction of oxygen leads to an increase in the HCN fraction of the total nitrogen content and a decrease in the NO fraction, and vice versa.
机译：通过使用多种截然不同的测量技术，以高的时间分辨率对废物焚化厂燃烧室中的痕量和大量气体化合物进行了在线分析。飞行时间质谱分析是同时使用三种电离技术进行的：共振增强多光子电离（REMPI），单光子电离（SPI）和电子碰撞电离（EI）。还使用了化学电离质谱（CIMS），傅立叶变换红外光谱（FTIR）和电化学方法。通过新开发的风冷不锈钢喷枪进行采样，以应对采样位置的高温和高浓度颗粒。氮物质主要为一氧化氮，氨和氰化氢（HCN），以及少量（约0.3％）的芳香族氮化合物。 NO，NH3 和HCN是假定的燃料-NO反应方案中该位置占主导地位的NO x 形成过程的主要贡献者。因此，NO循环过程起着重要作用。仅当空气供应变化时，工厂运行条件的变化才会产生明显的影响。例如，氧气的减少导致总氮含量的HCN分数增加，而NO分数减少，反之亦然。

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  • 来源
    《Analytical and Bioanalytical Chemistry》 |2006年第5期|1096-1106|共11页
  • 作者

    T. Streibel; K. Hafner; F. Mühlberger; T. Adam; R. Warnecke; R. Zimmermann;

  • 作者单位

    Institute of Ecological Chemistry GSF—National Research Centre for Environment and HealthAnalytical Chemistry Institute for Physics University of Augsburg;

    Institute of Ecological Chemistry GSF—National Research Centre for Environment and Health;

    Institute of Ecological Chemistry GSF—National Research Centre for Environment and Health;

    Institute of Ecological Chemistry GSF—National Research Centre for Environment and HealthAnalytical Chemistry Institute for Physics University of Augsburg;

    GKS Gemeinschaftskraftwerk Schweinfurt GmbH;

    Institute of Ecological Chemistry GSF—National Research Centre for Environment and HealthAnalytical Chemistry Institute for Physics University of AugsburgBIfA GmbH;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mass spectrometry; Photoionization; On-line; Waste incineration; Nitric oxide;

    机译：质谱;光电离;在线;废物焚烧;一氧化氮;

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