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Xylene and H2S destruction in high temperature flames under Claus condition

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  • Ibrahim, S.
  • Gupta, A.K.
  • Al Shoaibi, A.

Abstract

Experimental results on the destruction of H2S and xylene mixtures in H2/O2–N2 flames, at an equivalence ratio of three (Claus condition) are presented. The combustion generated products, including excited radical species were analyzed using flame emission spectroscopy and online gas chromatography (GC). The results showed the oxidation of H2S and H2 that resulted in the formation of high mole fraction of SO2. The formed SO2 further decomposed due to the formation of S2 and CS2 in the reactor. This reveals the possible interaction between sulfurous and hydrocarbon radicals. The examination of emission spectra of excited species between 280nm and 490nm showed C2∗ and C3∗ swan bands, CHO∗ and CH∗ bands and H∗ (Balmer band series). The results also showed bands of SO, SH, S2∗, CS2∗ and SO2∗. The continuum of SO2 afterglow was also observed in the flame. These results provide insight on the reaction chemistry associated with the destruction of xylene and H2S. They are also of significant interest to operators and designers of sulfur plants, as well as related policy-makers. The results show the formation of value added chemicals, such as methane that can also be recovered from acid gases.

Suggested Citation

  • Ibrahim, S. & Gupta, A.K. & Al Shoaibi, A., 2015. "Xylene and H2S destruction in high temperature flames under Claus condition," Applied Energy, Elsevier, vol. 154(C), pages 352-360.
    • Handle: RePEc:eee:appene:v:154:y:2015:i:c:p:352-360
    DOI: 10.1016/j.apenergy.2015.05.017
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    References listed on IDEAS

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    1. Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2015. "Effect of benzene on product evolution in a H2S/O2 flame under Claus condition," Applied Energy, Elsevier, vol. 145(C), pages 21-26.
    2. Selim, H. & Al Shoaibi, A. & Gupta, A.K., 2011. "Experimental examination of flame chemistry in hydrogen sulfide-based flames," Applied Energy, Elsevier, vol. 88(8), pages 2601-2611, August.
    3. Selim, H. & Gupta, A.K. & Al Shoaibi, A., 2012. "Effect of CO2 and N2 concentration in acid gas stream on H2S combustion," Applied Energy, Elsevier, vol. 98(C), pages 53-58.
    4. Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2014. "Toluene destruction in thermal stage of Claus reactor with oxygen enriched air," Applied Energy, Elsevier, vol. 115(C), pages 1-8.
    5. Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2015. "Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition," Applied Energy, Elsevier, vol. 149(C), pages 62-68.
    6. Selim, H. & Gupta, A.K. & Sassi, M., 2012. "Novel error propagation approach for reducing H2S/O2 reaction mechanism," Applied Energy, Elsevier, vol. 93(C), pages 116-124.
    7. Selim, H. & Al Shoaibi, A. & Gupta, A.K., 2011. "Effect of H2S in methane/air flames on sulfur chemistry and products speciation," Applied Energy, Elsevier, vol. 88(8), pages 2593-2600, August.
    8. Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2013. "Role of toluene in hydrogen sulfide combustion under Claus condition," Applied Energy, Elsevier, vol. 112(C), pages 60-66.
    9. Selim, H. & Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2013. "Effect of oxygen enrichment on acid gas combustion in hydrogen/air flames under claus conditions," Applied Energy, Elsevier, vol. 109(C), pages 119-124.
    10. Selim, H. & Ibrahim, S. & Al Shoaibi, A. & Gupta, A.K., 2014. "Investigation of sulfur chemistry with acid gas addition in hydrogen/air flames," Applied Energy, Elsevier, vol. 113(C), pages 1134-1140.
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    1. Liu, Xinghua & Ma, Yue & Li, Shuyuan & Yan, Hua & Wang, Daxi & Luo, Yongfeng, 2019. "Study of the reaction mechanism of aluminum based composite fuel and chlorine trifluoride oxide," Energy, Elsevier, vol. 168(C), pages 393-399.

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