In this study, an experimental investigation of lean premixed syngas/air flames with H₂/CO ratio of 1.0 and equivalence ratio of 0.5 has been conducted in a high‐pressure burner facility to investigate the effects of pressure and the presence of hydrocarbons on NO_x speciation. Detailed NO_x speciation measurements in the post‐flame region were conducted for various pressures up to 1.5 MPa (15 bar) using Fourier transform infrared (FTIR) spectroscopy. When the pressure is increased, NO concentration decreases while NO₂ increases due to pressure dependence of NO to NO₂ conversion. For a given pressure, the presence of hydrocarbons in syngas leads to an increase in NO_x concentrations possibly due to prompt NO formation. Comparison of NO concentrations in presence of CH₄ at different pressures shows that the effect of CH₄ due to prompt NO formation is more dominant than the effect of pressure on NO. © 2018 American Institute of Chemical Engineers AIChE J, 64: 3134–3140, 2018

中文翻译：

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燃料成分对高压合成气/空气燃烧中NOx形成的影响

在这项研究中，已在高压燃烧器中进行了H ₂ / CO比为1.0和当量比为0.5的稀薄预混气/空气火焰的实验研究，以研究压力和碳氢化合物的存在对NO的影响。_x物种。详述NO _X形态测量在后火焰区域进行关于各种压力下进行高达1.5兆帕（15巴），使用傅里叶变换红外（FTIR）光谱。当压力增加时，由于NO到NO ₂转化的压力依赖性，NO浓度降低而NO ₂增加。对于给定的压力，烃的合成气中的引线的存在的增加NO _X浓度可能是由于迅速形成NO。在不同压力下在存在CH _4的情况下比较NO浓度表明，由于迅速形成NO而导致的CH ₄的影响比压力对NO的影响更为显着。©2018美国化学工程师学会AIChE J，64：3134-3140，2018