Specific volatile hydrocarbons in smoke from oxidative pyrolysis of softwood pellets
Artikel i vetenskaplig tidskrift, 2004

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.

hydrocarbons

carbon monoxide

gas chromatography

burning sequence

Författare

Maria Olsson

Chalmers, Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik

Olle Jerker Ramnäs

Chalmers, Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik

Göran Petersson

Chalmers, Institutionen för kemiteknik och miljövetenskap, Skogsindustriell kemiteknik

Journal of Analytical and Applied Pyrolysis

Vol. 71 847-854

Ämneskategorier

Annan naturresursteknik

Kemi