Fast pyrolysis of wood and straw was conducted in a drop tube furnace (DTF) and compared
with corresponding data from a wire mesh reactor (WMR) to study the influence of
temperature (1000–1400)° C, biomass origin (pinewood, beechwood, wheat straw, alfalfa
straw), and heating rate (10 3° C/s, 10 4° C/s) on the char yield and morphology. Scanning
electron microscopy (SEM), elemental analysis, and ash compositional analysis were
applied to characterize the effect of operational conditions on the solid residues (char, soot) …

… ➢ The larger pinewood particles (> 0.85 mm) required more than 1 s holding time for the
complete conversion at intermediate and fast heating rates ➢ The influence of heating rate
on the char yields was less pronounced for particle sizes from 0.85 to 4 mm obtained at
temperatures > 1000C/s … 1D modeling of fast pyrolysis …