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http://dx.doi.org/10.3795/KSME-B.2002.26.6.817

Soot and PAH Formation in Counterflow Diffusion Flames of Ethylene-Propane  

Yoon, Seung-Suk (서울대학교 대학원 기계항공공학부)
Lee, Sang-Min (서울대학교 대학원 기계항공공학부)
Hwang, Jun-Young (서울대학교 대학원 기계항공공학부)
Chung, Suk-Ho (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.6, 2002 , pp. 817-822 More about this Journal
Abstract
Sooting characteristics of counterflow ethylene/propane mixture flames have been experimentally studied to investigate the fuel structure effect on PHM and soot formation. Laser-induced incandescene and laser-induced fluorescene techniques were employed to measure soot volume fraction and polycyclic aromatic hydrocarbon (PAH) concentration, respectively. Importance of $C_{3-}$species on PAH growth as well as the H-abstraction-C$_2$ $H_2$addition (HACA) mechanism has been emphasized, considering that PAH growth rate is greater for with mixed fuel than fer pure fuel flames. It was also confirmed that HACA pathways are the dominant soot growth mechanism. A new PAH growth model including both $C_{2-}$ and $C_{3-}$growth mechanisms is proposed based on the experimental results.
Keywords
Soot; PAH; LII; LIF; HACA Mechanism; Odd-Carbon Atom Pathway;
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