Ash behaviour in a CFB boiler during combustion of coal, peat or wood

摘要: This paper presents selected results from an extensive on-site measurement campaign where the ash behaviour in a 12 MW CFB boiler was studied during firing of coal, peat and wood. Samples were taken all in-going (bed material, fuel) out-going solid material streams (secondary cyclone bag filter) as well bed return leg. Deposit samples further collected inlet two different locations convective path. In addition, operation monitored, including collection operational data, flue gas temperature profiles emissions. The discusses differences chemistry that detected between three combustion cases draws conclusions on impact agglomeration fouling tendency for each fuel.