Optic diagnostics on pulverized coal particles combustion dynamics and alkali metal release behavior

This text focuses on pulverized coal particle devolatilization, ignition, alkali metal release behaviour, and burnout temperature using several novel optic diagnostic methods on a Hencken multi-flat flame burner.

Firstly, it presents a novel multi-filter technique to detect the CH* signal during coal ignition, which can be used to characterize the volatile release and reaction process.

It then offers observations on the prevalent transition from heterogeneous ignition to hetero-homogeneous ignition due to ambient temperature based on visible light signal diagnostics.