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Pyrolysis of poly-L-leucine under combustion-like conditions

Karl-Martin Hansson (Institutionen för energiomvandling) ; Lars-Erik Åmand (Institutionen för energiomvandling) ; Arno Habermann ; Franz Winter
Fuel (0016-2361). Vol. 82 (2003), p. 653-660.
[Artikel, refereegranskad vetenskaplig]

The protein poly-L-leucine has been used as a model compound for the nitrogen in biomass fuels. It was pyrolysed in a fluidised bed at 700 and 800C and the pyrolysis gases were analysed with a FT-IR spectrometer. HCN, NH3 and HNCO were identified as the main nitrogen-containing species, while neither NO nor N2O were found among the pyrolysis gases. At 700C, as much as 58% of the nitrogen content was converted into HCN and 31% into NH3. The HCN/NH3 ratio increased from about 1.9 at 700C to above 2.2 at 800C. Pyrolysis of another protein, poly-L-proline, at 800C gave a HCN/NH3 ratio close to 10. This revealed that the protein’s amino acid composition has a marked impact on the composition of the pyrolysate.

Nyckelord: Pyrolysis; Protein; Biomass; HCN; NH3; HNCO


The paper is part of Karl-Martin Hanssons PhD work published in 2003 at Chalmers University of Technology, Göteborg, Sweden with the title: "Principles of Biomass Pyrolysis with Emphasis on the Formation of Nitrogen-Containing Gases HNCO, HCN and NH3"



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CPL Pubid: 239162

 

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Institutioner (Chalmers)

Institutionen för energiomvandling (1900-2003)

Ämnesområden

Energi
Hållbar utveckling
Termisk energiteknik
Kemisk energiteknik
Miljöteknik

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