Low-NOx conversion of pure ammonia in a cyclonic burner under locally diluted and preheated conditions

摘要: Abstract Chemical storage in suitable energy carriers is a requirement for any renewable source-based supply system. In this framework, owing to its very high hydrogen density and long established production processes, ammonia appears be promising carrier. Furthermore, it not necessary use extraction processes because can directly used as fuel combustion systems. Nevertheless, there notable gap between the rising interest ammonia-based power technologies actual knowledge understanding of physical chemical underpinnings reactivity features. particular, viability an vector relies on global process conversion efficiency, including possibility obtaining required levels at consumption points with minimal environmental impact. Therefore, study aimed bridging fundamental research development implementation ammonia-fueled context eco-friendly, safe, sustainable The combination preheating dilution levels, which are realized by means strong internal recirculation, leads peculiar regime. potential oxidation mode, cyclonic flow burner, achieve stable explored determine influence operational parameters. dependence stability NOx emissions equivalence ratio, inlet level, thermal load inflow mixture was studied monitoring temperatures species concentrations identify optimal burner operating conditions.