A Numerical Study of Turbulent Combustion of a Lignocellulosic Gas Mixture in an Updraft Fixed Bed Reactor

Lignocellulosic biomass is an established source of energy with various applications. Yet, its diversity renders the proper combustion thermochemical degradation vapors challenging. In this work, syngas obtained from conversion was numerically investigated to limit pollutant emission. The Computational Fluid Dynamics (CFD) simulation performed using open-source OpenFOAM. reactor considered in axisymmetric configuration. gas mixture resulting pyro-gasification devolatilization composed seven species: CO, CO2, H2O, N2, O2, light, and heavy hydrocarbon, represented by methane (CH4) benzene (C6H6), respectively. evolutions mass, momentum, energy, species’ concentrations were tracked. flow modeled RANS formulation. For chemistry, reduced kinetic schemes three four steps tested. Moreover, Eddy Dissipation Concept (EDC) model used account for turbulence–chemistry interaction. numerical prediction enabled us describe temperature species. Results show that all transported variables closely dependent on mass rate inflow gas, primary secondary air injections. Finally, a process perspective, importance inlet pollutants emissions can be concluded.