Comparison of Flame Stability under Air and Oxy-Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl Flame

Oxy-fuel combustion has been identi ed as a possible technology to implement carbon capture and storage (CCS) measures for pulverized fuel based combustion. The ue gas recirculation, which lays the base for oxy-fuel combustion processes, results in large quantities of carbon dioxide within the oxidiser stream. In comparison to conventional air supplied combustion, this "substitution" of nitrogen by carbon dioxide leads to signi cant di erences, which are largely still subject of research. Among those is the ame stability for air and oxy-fuel ames of pulverized coal. This work presents investigations on this topic conducted with the same equipment for both types of combustion to identify some underlying di erences or commonalities for both types of combustion.