Particle Characterization at High Temperature in a 5 MW Moving Grate Biomass Boiler

J. Yang, A. Gebremedhin & M. Strand
The particles and inorganic gaseous compounds from a 5 MW moving grate biomass boiler were characterized at two sampling positions at 1100 °C and 800 °C respectivly. Samples were extracted with high temperature sampling method with primary dilution ratio of 20. For both sampling positions a biomodal mass size distributions were observed, with ultrafine mode at around 70-100 nm and fine mode at 10-30 nm. The increasing concentration of ultrafine particle over time indicates that...