Home – Home – Jornals – Combustion, Explosion and Shock Waves 2026 number 2

The ignition of pine sawdust (d < 200 μm) and mixed compositions of brown coal particles (d < 3 mm) and pine sawdust in a fluidized bed was studied using localized radiation from a continuous-wave semiconductor laser (λ = 450 nm) with a power of ≤23 W with an exposure time sufficient for ignition and flame propagation over the fuel surface until self-sustaining combustion was established. The dependences of the time to establish self-sustaining combustion and the mass of sawdust burnt out in 60 s at a fixed radiation power on the air flow rate through the fluidized bed were determined, as well as the dependence of the time to establish self-sustaining combustion of sawdust on the radiation power at a fixed air flow rate and the dependence of the time to establish self-sustaining combustion of a sawdust and coal mixture on the mass content of coal in the mixture of 30 ÷ 80% at a fixed radiation power of 23 W. Optimal conditions for establishing self-sustaining combustion of solid fuel in a fluidized bed under laser radiation exposure were determined.