Abstract
The presented work is developed in the framework of the Green Deal project FRONTSH1P; in particular, it is related to the task “CSS1 – A circular approach to wood packaging waste” which includes activities related to the coupling of an updraught direct‐current commercial stationary fluidized bed gasifier operating with wood packaging waste (e.g., disused pallets), with an in-house designed combustion facility based on a flexible combustion chamber. Since the producer gas obtained from wood packing waste gasification differs significantly from conventional fossil fuels in terms of the low heating value and combustion kinetics, there is need to assess flame parameters for a proper burner design. The proposed work aims to study the fundamental combustion characteristics of producer gas (2% CH4, 17% H2, 9% CO2, 26% CO, 5% H2O, and 41% N2) such as, laminar flame speed, flame temperature and flame structures adopting the 1D-laminar premixed flame model in CANTERA code. The experimentally validated USC Mech II reaction mechanism was used to this end. This investigation was performed at a wide range of equivalence ratios at atmospheric conditions, 300 K and 1 bar. As a result, stoichiometric combustion of producer gas is obtained at fuel-air ratio of 1.3 and peak flame speed of 43 cm/sec. The maximum flame temperature of 1947 K is observed at fuel-air ratio of 1.0 overlapping the highest heat release rate layer. Finally, the flame structures, the overall production rates, as well as the heat release rate profiles of key species and reactions are presented in detailed. © 2023 ETA-Florence Renewable Energies.