Risk analysis of FORTUM’s 560 MWe net power plant retrofit to oxyfuel combustion

Application of lean flammability limit study and large eddy simulation to burner development for an oxy-fuel combustion system

“…Recently, experimental results of lean explosion limit at air and oxy-fuel combustion were reported (Kupila et al, 2011). The proposed flame propagation velocity and lean flammability limit model was also verified using these results, and this is shown in Fig.…”

“…In the present study, we verified the model under various coal properties, diameter, oxygen concentration, surrounding gas temperature and composition for air and oxy-fuel combustion conditions. Calculations of the lean flammability limit for oxy-fuel combustion were also verified by comparison to experimental results of lean explosion limit (Kupila et al, 2011). Ignition performances of solid fuels differ with fuel properties significantly.…”

“…Symbols are experimental results from the literature(Kupila et al, 2011), and lines are calculated results.…”

Model To Evaluate Flame Propagation Velocity for Pulverized Coal Particles

“…Several studies had reported that the flame velocity decreased at much higher concentrations. − We did not measure the flame propagation velocity when the coal concentration was very high. Therefore, we were not able to observe the phenomenon that the flame propagation velocity became small when the coal concentration increased.…”