Sooting limit of various gaseous hydrocarbon fuels in counterflow diffusion flames

Yu Wang, Suk Ho Chung*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Sooting limit in counterflow diffusion flames, defined as the critical fuel and oxygen mole fractions at which soot starts to appear, were measured for various gaseous hydrocarbons using an elastic light scattering technique. The effects of dilution and strain rate were also examined. Maximum flame temperatures at the measured sooting limits were calculated using detailed chemical mechanisms to help interpret experimental results. Appreciable difference was observed between soot formation (SF) and soot formation oxidation (SFO) flames. In SF flames, for a specified fuel maximum flame temperature at sooting limits seems to be constant over a wide dilution levels indicating the existence of limiting temperature for soot to form, which depended on fuel type and strain rate. In SFO flames, critical oxygen concentration was shown to exhibit an Arrehnius relationship with flame temperature for all the fuels tested. Increase in strain rate was shown in general to decrease the sooting tendency of fuel and its sensitivity to strain rate varies with fuel type.

Original languageEnglish (US)
Title of host publicationProceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013
PublisherKorean Society of Combustion
StatePublished - 2013
Event9th Asia-Pacific Conference on Combustion, ASPACC 2013 - Gyeongju, Korea, Republic of
Duration: May 19 2013May 22 2013

Other

Other9th Asia-Pacific Conference on Combustion, ASPACC 2013
CountryKorea, Republic of
CityGyeongju
Period05/19/1305/22/13

ASJC Scopus subject areas

  • Environmental Engineering

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