Volatile matter yields for biomass over 95% (daf basis) can be achieved in entrained flow pyrolysis conducted in a drop tube furnace at temperatures of 1100oC and above with residence times of 200-600 ms. A silica tracer method can measure volatile matter contents accurately and avoid the problem of partial devolatilisation of alkali and alkaline metals encountered with the normal ash tracer method. For demineralised biomass samples, the volatile matter contents obtained in normal proximate analysis and entrained flow pyrolysis correlate with ailphatic carbon contents determined by solid state 13C NMR. Delignified wood fractions give volatile matter yields very close to 100%. Information on the composition of the gases and tars obtained from entrained flow pyroysis will be reported.

Maximising volatile matter yields for biomass in entrained flow pyrolysis and a universal correlation with aliphatic carbon content

247th National Meeting (2014)

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