Study on laminar flame speed and flame structure of syngas with varied compositions using OH-PLIF and spectrograph
Study on laminar flame speed and flame structure of syngas with varied compositions using OH-PLIF and spectrograph
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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
DOI：
10.1016/j.ijhydene.2012.11.023
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发表时间：
2013-02
影响因子：
7.2
通讯作者：
Zhang, Yang
中科院分区：
文献类型：
--
作者：
Jin, Wu;Luong Dinh Thi;Huang, Zuohua;Zhang, Yang
系统地收集了预混合成气/空气混合物本生火焰的各种信息。采用CCD摄像机采集火焰图像。应用OH-PLIF技术获得火焰OH分布，并用摄谱仪测量火焰辐射光谱。实验是在一个温度不受控制的燃烧器和合成气在很宽的范围内的H2/CO比（从0.25到4）和当量比（从0.5到1.2）。结果表明，增加氢含量（[公式：见正文]）可显著延长吹脱极限。采用基于CCD火焰成像和OH-PLIF图像的锥角法测量的层流火焰速度随着[公式：见正文]的增加而显著增加，当计算温度校正后，这些测量结果与通过Li机理的动力学模型预测吻合得很好。动力学研究表明，随着[公式：见正文]的增加，H和OH自由基的产生加速。此外，随着[公式：见正文]的增加，主要的H自由基产生反应（或OH自由基消耗反应）从R29（CO + OH = CO2+ H）变为R3（H2+ OH = H2O + H）。进行敏感性分析，以了解[公式：见正文]增加时的主导反应。不同[公式：见正文]混合物的火焰颜色的不同是由于它们在燃烧中产生的中间自由基的辐射光谱的不同。
Various Bunsen flame information of premixed syngas/air mixtures was systematically collected. A CCD camera was used to capture the flame images. The OH-PLIF technique was applied to obtain the flame OH distribution and overall flame radiation spectra were measured with a spectrograph. Experiments were conducted on a temperature un-controlled burner and syngas over a wide range of H2/CO ratios (from 0.25 to 4) and equivalence ratios (from 0.5 to 1.2). Results show that increasing hydrogen fraction ( [Formula: see text] ) extends the blow-off limit significantly. The measured laminar flame speed using cone-angle method based on CCD flame imaging and OH-PLIF images increases remarkably with the increase of [Formula: see text] , and these measurements agrees well with kinetic modeling predictions through Li's mechanism when the temperature for computation is corrected. Kinetic study shows that as [Formula: see text] increases, the production of H and OH radicals is accelerated. Additionally, the main H radical production reaction (or OH radical consumption reactions) changes from R29 (CO + OH = CO2+ H) to R3 (H2+ OH = H2O + H) as [Formula: see text] increases. Sensitivity analysis was conducted to access the dominant reactions when [Formula: see text] increases. The difference on flame color for different [Formula: see text] mixtures is due to their difference in radiation spectrum of the intermediate radicals produced in combustion.
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影响因子：
4.4
作者：
R. Evertsen;Van Oijen;R. Hermanns;D. Goey;Ter Meulen
通讯作者：
R. Evertsen;Van Oijen;R. Hermanns;D. Goey;Ter Meulen
DOI：
10.1016/s0082-0784(96)80297-9
发表时间：
1996
期刊：
--
影响因子：
--
作者：
Martin J. Brown;I. McLean;David B. Smith;Simon Taylor
通讯作者：
Martin J. Brown;I. McLean;David B. Smith;Simon Taylor
影响因子：
4.4
作者：
Q. Nguyen;R. Dibble;C. Carter;G. Fiechtner;R. Barlow
通讯作者：
Q. Nguyen;R. Dibble;C. Carter;G. Fiechtner;R. Barlow
影响因子：
7.4
作者：
Monteiro, Eliseu;Bellenoue, Marc;Malheiro, Salvador
通讯作者：
Malheiro, Salvador
影响因子：
7.2
作者：
Cormos, Calin-Cristian
通讯作者：
Cormos, Calin-Cristian