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Specific volatile hydrocarbons in smoke from oxidative pyrolysis of softwood pellets

Maria Olsson (Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik) ; Olle Ramnäs (Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik) ; Göran Petersson (Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik)
Journal of Analytical and Applied Pyrolysis Vol. 71 (2004), 2, p. 847-854.
[Artikel, refereegranskad vetenskaplig]

Samples of smoke from laboratory burning of commercial sawdust-based softwood pellets were analysed by gas chromatography on an aluminium oxide column. Flaming burning was very efficient. Significant emitted hydrocarbons were methane, quantitatively followed by ethene and lower proportions of ethane, ethyne and propene. The even lower hydrocarbon emissions from final glowing combustion were strikingly different with ethyne and benzene as the only prominent non-methane hydrocarbons. Smouldering combustion caused much higher hydrocarbon concentrations. Prominent non-methane compounds were furan and ethene from initial smouldering, and ethane, ethene and benzene from after-flame smouldering. The large differences in the proportions of specific hydrocarbons should be considered in evaluations of emissions from residential burning of pellets, with respect to combustion technology and impact on environment and health.

Nyckelord: burning sequence, carbon monoxide, hydrocarbons, gas chromatography

Denna post skapades 2006-09-12. Senast ändrad 2010-10-20.
CPL Pubid: 5798


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Institutioner (Chalmers)

Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik (2002-2004)



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Residential biomass combustion - emissions of organic compounds to air from wood pellets and other new alternatives