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富氧空气中CH/H/CO/CO/N混合物层流火焰速度的实验研究及动力学模拟

Experimental Study of the Laminar Flame Speeds of the CH/H/CO/CO/N Mixture and Kinetic Simulation in Oxygen-Enriched Air Condition.

作者信息

Hu Xianzhong, Bai Fangchao, Yu Chang, Yan Fusheng

机构信息

School of Metallurgy, Northeastern University, Shenyang, Liaoning 110819, China.

出版信息

ACS Omega. 2020 Dec 16;5(51):33372-33379. doi: 10.1021/acsomega.0c05212. eCollection 2020 Dec 29.

DOI:10.1021/acsomega.0c05212
PMID:33403299
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7774289/
Abstract

The experimental study on the laminar flame speeds of the CH/H/CO/CO/N mixture was carried out in oxygen-enriched air condition. The laminar flame propagation velocities of the blended gas were measured in a range of equivalence ratios (from 0.6 to 1.4) and oxygen concentrations (from 21 to 33%) using a Bunsen flame. Comparisons between the experiments and calculations show that the GRI Mech 3.0 mechanism can well predict the laminar flame speed of the blended gas in oxygen-enriched conditions. The laminar flame propagation velocities were enhanced by the increasing oxygen concentration, while the reaction pathway of fuel changed little. The effects of each species of the CH/H/CO/CO/N mixture on the laminar flame speeds were discussed. Results show that the laminar flame speed is promoted by the increase of H and CO, while the laminar flame speed is decreased by the increasing CH, CO, and N concentrations. The inhibition effect of CO on the laminar flame speed is bigger than that of N, which is due to the difference in the properties of CO and N.

摘要

在富氧空气条件下对CH/H/CO/CO/N混合物的层流火焰速度进行了实验研究。使用本生火焰在一系列当量比（从0.6到1.4）和氧气浓度（从21%到33%）范围内测量了混合气体的层流火焰传播速度。实验与计算结果的比较表明，GRI Mech 3.0机理能够很好地预测富氧条件下混合气体的层流火焰速度。层流火焰传播速度随着氧气浓度的增加而提高，而燃料的反应路径变化不大。讨论了CH/H/CO/CO/N混合物中各组分对层流火焰速度的影响。结果表明，H和CO浓度的增加促进了层流火焰速度，而CH、CO和N浓度的增加则降低了层流火焰速度。CO对层流火焰速度的抑制作用大于N，这是由于CO和N的性质不同所致。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1057/7774289/d71d6bafd00a/ao0c05212_0013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1057/7774289/e096ed6a9730/ao0c05212_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1057/7774289/bc41f11e8f74/ao0c05212_0009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1057/7774289/d71d6bafd00a/ao0c05212_0013.jpg

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