Kinetic model for torrefaction of wood chips in a pilot-scale continuous reactor

摘要: Abstract Torrefaction is a mild thermal treatment (200–300 °C) in an inert atmosphere, known to increase the energy density of biomass by evaporation water and proportion volatiles. In this work “two-step reaction series” model was used describe degradation kinetics pine wood. The kinetic parameters were determined using thermogravimetric analyzer (TGA) mass loss during initial heating period taken into account when deriving parameters. It shown that experimental results at different rates (10–50 °C min −1 ) are good accordance with data. additional step continuous, pilot scale reactor built produce torrefied wood chips large quantities. applied predict yield torrefaction reaction. Parameters for calculation temperature along feeding rate combination obtained from tests TGA. Together laboratory scale, batch determine higher value (HHV) ( y same material temperatures, it possible HHV reactor. study presented modeling approach can be product quality reactors based on small experiments could improve homogeneity products, which still problem most operational plants today.