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Investigation of sulfur chemistry with acid gas addition in hydrogen/air flames

Author

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

Abstract

Investigations on the effect of acid gas (H2S and CO2) addition in hydrogen/air flame are presented. The specific equivalence ratios examined include Claus conditions (Φ=3.0) as well as stoichiometric conditions (Φ=1.0) and fuel-lean conditions (Φ=0.5). Two different acid gas compositions of 100% H2S, and 50% H2S/50% CO2 are reported. Addition of pure hydrogen sulfide acid gas deteriorated the rate of hydrogen oxidation in the hydrogen/air flame. Combustion of hydrogen sulfide alone formed sulfur dioxide rather than more favorable elemental sulfur. In contrast combustion of 50% H2S/50% CO2 acid gas stream produced faster decomposition/production of H2S, SO2, and H2. Presence of carbon monoxide was a distinct mark on the release of oxygen from CO2 into the reaction pool. The presence of carbon monoxide triggered the formation of other sulfurous–carbonaceous compounds, such as COS and CS2.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:113:y:2014:i:c:p:1134-1140
    DOI: 10.1016/j.apenergy.2013.08.054
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    1. 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.
    2. 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.
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    1. 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.
    2. El-Melih, A.M. & Al Shoaibi, A. & Gupta, A.K., 2017. "Reformation of hydrogen sulfide to hydrogen in the presence of xylene," Applied Energy, Elsevier, vol. 203(C), pages 403-411.
    3. El-Melih, A.M. & Al Shoaibi, A. & Gupta, A.K., 2016. "Hydrogen sulfide reformation in the presence of methane," Applied Energy, Elsevier, vol. 178(C), pages 609-615.
    4. Li, Yang & Guo, Qinghua & Yu, Xinlei & Dai, Zhenghua & Wang, Yifei & Yu, Guangsuo & Wang, Fuchen, 2017. "Effect of O2 enrichment on acid gas oxidation and formation of COS and CS2 in a rich diffusion flame," Applied Energy, Elsevier, vol. 206(C), pages 947-958.
    5. 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.
    6. Li, Yang & Yu, Xinlei & Li, Hongjun & Guo, Qinghua & Dai, Zhenghua & Yu, Guangsuo & Wang, Fuchen, 2017. "Detailed kinetic modelling of H2S oxidation with presence of CO2 under rich condition," Applied Energy, Elsevier, vol. 190(C), pages 824-834.

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