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Interaction between iron based compound and soot particles in diffusion flame

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  • Kim, Kibum
  • Hahn, David W.

Abstract

Metallic fuel additives have been considered for soot emission control over the last few decades. However, the exact mechanisms of soot reduction are poorly understood and still remain controversial. In response to the need for identifying the state of the iron additive in the diffusion flame, laser-induced fluorescence and absorption spectroscopy were performed in a laboratory-scale isooctane diffusion laminar flame seeded with 4000 ppm iron pentacarbonyl as the metallic additive. The results of the spectroscopic techniques reveal that the dominant iron species throughout the primary flame region was Fe atoms, rather than any form of iron oxide. Moreover, elemental iron was observed to diminish through the soot oxidation region. The primary conclusion is that the catalytic effect of Fe atoms and possibly iron oxides enhanced soot oxidation in the burnout regime of the flame, thereby reducing the overall soot emissions.

Suggested Citation

  • Kim, Kibum & Hahn, David W., 2016. "Interaction between iron based compound and soot particles in diffusion flame," Energy, Elsevier, vol. 116(P1), pages 933-941.
    • Handle: RePEc:eee:energy:v:116:y:2016:i:p1:p:933-941
    DOI: 10.1016/j.energy.2016.09.132
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    Citations

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    Cited by:

    1. Chu, Huaqiang & Han, Weiwei & Cao, Wenjian & Gu, Mingyan & Xu, Guangju, 2019. "Effect of methane addition to ethylene on the morphology and size distribution of soot in a laminar co-flow diffusion flame," Energy, Elsevier, vol. 166(C), pages 392-400.
    2. Kang, Yinhu & Sun, Yuming & Lu, Xiaofeng & Gou, Xiaolong & Sun, Sicong & Yan, Jin & Song, Yangfan & Zhang, Pengyuan & Wang, Quanhai & Ji, Xuanyu, 2018. "Soot formation characteristics of ethylene premixed burner-stabilized stagnation flame with dimethyl ether addition," Energy, Elsevier, vol. 150(C), pages 709-721.
    3. Luo, Minye & Liu, Dong, 2018. "Effects of dimethyl ether addition on soot formation, evolution and characteristics in flame-wall interactions," Energy, Elsevier, vol. 164(C), pages 642-654.
    4. Kim, Kibum & Kim, Hae Kwang, 2018. "Characterization of products from Fe(CO)5 seeded CO diffusion flame," Energy, Elsevier, vol. 148(C), pages 802-808.
    5. Li, Dun & Gao, Jianmin & Zhao, Ziqi & Du, Qian & Dong, Heming & Cui, Zhaoyang, 2022. "Effects of iron on coal pyrolysis-derived soot formation," Energy, Elsevier, vol. 249(C).

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