An experimental and computational study of OH formation in laminar coflow syngas diffusion flames

An experimental and computational study of OH formation in laminar coflow syngas diffusion flames
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层流并流合成气扩散火焰中 OH 形成的实验和计算研究

DOI:
10.1016/j.fuel.2018.03.144
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发表时间:
2018-08
期刊:
影响因子:
7.4
通讯作者:
Fengshan Liu
Fengshan Liu
中科院分区:
工程技术1区
文献类型:
--
作者:
Huanhuan Xu;Shaozeng Sun;Fengshan Liu

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通过实验和数值模拟研究了在25%O2/75%H2O同向流氧化器中,合成气中H2含量对合成气层流扩散火焰中OH生成的抑制作用。当氧化剂流由O2/N2组成时,发现这种影响不同于合成气中H2含量对OH形成的影响。采用增强型CCD(ICCD)摄像机拍摄了OH的化学发光图像,用Pt-6%Rh/Pt-30%Rh热电偶测量了中心线温度,并采用二维火焰程序对层流共流扩散火焰进行了详细的反应机理模拟。H2O的不同影响,包括化学,热,运输,和辐射进行了检查和详细的动力学分析,以深入了解如何在氧化剂流中的H2O改变合成气中的H2含量对OH形成的影响。
This paper presents an experimental and numerical study to elucidate the suppressing influence of H2content in syngas on OH formation in laminar syngas diffusion flames burning in coflow oxidizer of 25%O2/75%H2O. Such an influence was found different from the effect of H2content in syngas on OH formation when the oxidizer stream consists of O2/N2. OH∗-chemiluminescence images were captured using an intensified CCD (ICCD) camera, the centerline temperatures were measured by a Pt-6%Rh/Pt-30%Rh thermocouple, while a two-dimensional flame code was adopted to simulate these laminar coflow diffusion flames using a detailed reaction mechanism. The different effects of H2O including chemical, thermal, transport, and radiative were examined and detailed kinetics analyses were conducted to gain insights into how H2O in the oxidizer stream alters the influence of H2content in syngas on OH formation.
利用OH-PLIF和光谱仪研究不同成分合成气层流火焰速度和火焰结构
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