Bromine and chlorine in aerosols and fly ash when co-firing solid recovered fuel, spruce bark and paper mill sludge in a 80MWth BFB boiler

P. Vainikka*, J. Silvennoinen, P. Yrjas, A. Frantsi, L. Hietanen, M. Hupa, R. Taipale

*Korresponderande författare för detta arbete

Forskningsoutput: KonferensbidragArbetsdokumentPeer review

4 Citeringar (Scopus)

Sammanfattning

Aerosol and fly ash sampling was carried out at a 80MWth bubbling fluidised bed (BFB) boiler plant co-firing solid recovered fuel (SRF), spruce bark and paper mill wastewater sludge in two experimental conditions. The SRF-Bark ratio in the fuel mix was kept constant at 50%-50% on dry mass basis in both experiments but two sludge proportions were used: 15% and 4% on dry mass basis. Aerosol samples were collected from the superheater region of the boiler furnace and fly ash from the electrostatic precipitator (ESP). Na, K, Cl and S were found to be in mainly water soluble compounds in the aerosols sampled by means of a Dekati type Low Pressure Impactor (DLPI). Bromine was found in several weight percentages in aerosols and it was amongst the main elements in some of the samples collected. Bromine is assumed to mainly originate from flame retarded plastics and textiles in the SRF. According to the measurements, the fate of Br seems to be analogous to the other main halogen, Cl, and its conversion from fuel to aerosols was high, indicating a strong tendency to form bromine salts.

OriginalspråkEngelska
Sidor1061-1066
Antal sidor6
DOI
StatusPublicerad - 2009
MoE-publikationstypO2 Other
Evenemang20th International Conference on Fluidized Bed Combustion - Xian, Kina
Varaktighet: 18 maj 200921 maj 2009

Konferens

Konferens20th International Conference on Fluidized Bed Combustion
Land/TerritoriumKina
OrtXian
Period18/05/0921/05/09

Nyckelord

  • Biomass and waste, BFB, bromine, chlorine

Fingeravtryck

Fördjupa i forskningsämnen för ”Bromine and chlorine in aerosols and fly ash when co-firing solid recovered fuel, spruce bark and paper mill sludge in a 80MWth BFB boiler”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här