Soot formation from C2H2 and C2H4 pyrolysis at different temperatures |
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| Institution: | 1. Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA;2. Department of Combustion Technology and Thermal Energy, University of Miskolc, Miskolc, Hungary;1. Department of Energy and Power Engineering, Beihang University, Beijing 100191, China;2. Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, H3A 0G4, Canada;3. Hudson River Research, Jersey City, New Jersey 07310, United States;4. Beihang Hangzhou Innovation Institute (Yuhang District), Hangzhou, Zhejiang 310023, China;5. National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, Research Institute of Aero-Engine, Beihang University, Beijing 100191, China;6. Department of Mechanical Engineering, Macquarie University, NSW 2109, Australia;7. Beijing Key Laboratory of Occupational Safety and Health, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing 100054, China;8. Department of Geography, Earth & Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;9. Department of Environmental Sciences / Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia |
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| Abstract: | A study of the pyrolysis of two hydrocarbons, C2H2 and C2H4, at different temperatures has been carried out in order to compare their behaviour in terms of soot and gas yields and gas composition. Pyrolysis experiments have been performed in the same conditions for both hydrocarbons: an inlet hydrocarbon concentration of 15,000 ppmv and a temperature range of 1000–1200 °C. For C2H2 and C2H4 pyrolysis tests, the results present the same trend when increasing the temperature: an increase in soot yield, a decrease in gas yield and a similar evolution of the outlet gases. Comparatively, it can be observed that acetylene is a more sooting hydrocarbon than ethylene for a given temperature. Additionally, the study of soot reactivity with O2 and NO shows that the soot samples obtained from ethylene show a slightly higher reactivity towards O2 and NO than the soot samples formed from acetylene. |
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