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The influence of changes in fuel calorific value to combustion performance for Siemens SGT-300 dry low emission combustion system

机译：燃料热值变化对西门子SGT-300干式低排放燃烧系统燃烧性能的影响

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摘要

The effect of changes in fuel calorific value on combustion was investigated on a single standard Siemens SGT-300 7.9 MW dry low emission (DLE) combustor in a high pressure rig at actual engine operating conditions. The change in fuel calorific value was achieved by blending CO_2 and/or N_2 with Natural Gas. The lowest fuel calorific value was tested at a Wobbe Index (WI) of 23 MJ/m~3 which was associated with 35% CO_2 (in volume) added to Natural Gas. The engine loads tested varied from 5% to full load. NOx and CO emissions were measured in addition to the frequency and amplitudes of pressure fluctuations and various temperatures. The impact of pilot split (ratio of pilot fuel to total fuel mass flow rate) and fuel composition on these was investigated. The results showed a noticeable benefit where the reduction in WI provided a reduction in NOx emissions. The amplitude of the pressure fluctuations was not an issue being controlled, where necessary, by pilot split. The test results showed that WI of 25 MJ/m~3 appeared critical to combustion performance compared to Natural Gas. Review of the literature and calculation of the flame properties attempted to provide explanations for the trends observed during testing.
机译：在实际发动机工况下，在高压设备中的单个标准Siemens SGT-300 7.9 MW干式低排放（DLE）燃烧器上，研究了燃料热值变化对燃烧的影响。通过将CO_2和/或N_2与天然气混合可以实现燃料热值的变化。在23 MJ / m〜3的沃泊指数（WI）下测试了最低的燃料热值，这与添加到天然气中的35％CO_2（体积）有关。测试的发动机负载从5％到满负载不等。除了压力波动的频率和幅度以及各种温度外，还测量了NOx和CO排放。研究了引燃分流（引燃燃料与总燃料质量流率之比）和燃料成分对它们的影响。结果显示出显着的好处，其中WI的减少提供了NOx排放的减少。压力波动的幅度不是问题，需要时可通过先导控制来控制。测试结果表明，与天然气相比，WI为25 MJ / m〜3对燃烧性能至关重要。对文献的回顾和火焰特性的计算试图为测试期间观察到的趋势提供解释。

著录项

  • 来源
    《Fuel》 |2013年第1期|239-246|共8页
  • 作者

    Kexin Liu; Victoria Sanderson;

  • 作者单位

    Siemens Industrial Turbomachinery Ltd., Ruston House, PO Box 1, Waterside South, Lincoln LN5 7FD, UK;

    Siemens Industrial Turbomachinery Ltd., Ruston House, PO Box 1, Waterside South, Lincoln LN5 7FD, UK;

  • 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

    DLE gas turbine combustor; fuel flexibility; wobbe index; emissions; combustion instability;

    机译：DLE燃气轮机燃烧室;燃油灵活性;沃伯指数排放燃烧不稳定性;

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