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GAO Yongpan, CHENG Hanchong, WANG Yang, LIU Xiaofang. Effect of H2/CO Doping on Soot Formation in C2H4(O2/CO2) Diffusion Flame[J]. Journal of Anhui University of Technology（Natural Science）, 2021, 38(2): 161-168,174. DOI: 10.3969/j.issn.1671-7872.2021.02.007
Citation: GAO Yongpan, CHENG Hanchong, WANG Yang, LIU Xiaofang. Effect of H2/CO Doping on Soot Formation in C2H4(O2/CO2) Diffusion Flame[J]. Journal of Anhui University of Technology（Natural Science）, 2021, 38(2): 161-168,174. DOI: 10.3969/j.issn.1671-7872.2021.02.007
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Effect of H2/CO Doping on Soot Formation in C2H4(O2/CO2) Diffusion Flame

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    • Abstract
  • The influence of H2/CO doping on soot formation in laminar ethylene diffusion flame in O2/CO2 atmosphere was studied by extinction experiment and CoFlame program simulation.The distributions of flame height, temperature, content of soot and important components were obtained, and the variation of main soot evolution process was analyzed. The results show that the addition of H2/CO has obvious inhibition effect on soot formation in ethylene flame. When the flow ratio of H2 to CO is 0.3∶0.3, the inhibition effect is the strongest, and the soot volume fraction decreases by 25.3%. The effect of H2/CO doping on the height and temperature of ethylene flame is weak, the thermal effect and oxidation rate are not the main factors affecting soot formation in ethylene flame. It is mainly through inhibiting the formation of acetylene, benzene and pyrene, then inhibiting the soot nucleation and soot surface growth, and finally reducing the soot formation.
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