tion of the pyrolysis of biomass, based on two lumped reactions in
series (Scheme 2 in Fig. 4). In this scheme the first lumped reaction
represents the biomass decomposition process to primary char and
volatiles. The second lumped reaction represents the decomposition
process of primary volatiles, catalysed by the primary char,to form secondary volatiles and char by cracking, partial oxidation,re-polymerization and condensation processes. Actually, the
experimental results evidence that secondary reactions strongly affect the overall reaction heat if a sufficient contact time between the volatiles and the primary char is allowed in the pyrolysis system.Although also Scheme 2 in Fig. 4 provides an oversimplification
of the process, this schematization seems more near to the actual pyrolysis process [9,26,39].