MODULATION OF SOOT RESIDENCE TIME IN A FLAME SYSTEM

The aim of this communication is to show how a very simple stagnation plate positioned transversally to the of an air-ethylene premixed flame ([C]/[O]=1.38) does introduce significant changes in both flame temperature, soot 2D distribution and, moreover, does produces a dramatic increase of the soot particle residence time about a factor 6-8 with respect to the identical flame without the stagnation plate. This has crucial effect of the possibility to modulate the permanence time of the carbon particle in the high-reactive flow according to the design of the burner system.