Mercury emission and speciation in fly ash from a 35 MWth large pilot boiler of oxyfuel combustion with different flue gas recycle

• The distribution of Hg in a 35MWth large pilot boiler of oxyfuel combustion was investigated. • Higher concentration of gaseous mercury is contained in oxyfuel combustion flue gas. • The oxyfuel combustion atmosphere enhances the conversion of Hg0 to Hgp. • Trigonal red HgS is the main mercury spe...
Ausführliche Beschreibung

• The distribution of Hg in a 35MWth large pilot boiler of oxyfuel combustion was investigated. • Higher concentration of gaseous mercury is contained in oxyfuel combustion flue gas. • The oxyfuel combustion atmosphere enhances the conversion of Hg0 to Hgp. • Trigonal red HgS is the main mercury species in air combustion fly ash. • Mercury bound to organic matter (Hg–OM) and trigonal red HgS are the main species in the oxyfuel combustion fly ash. Ausführliche Beschreibung