Abstract
Hvb coal and fir bark, were combusted with Cl-rich waste fuels (plastic
waste and paper sludge) under bubbling bed (BFB) combustion conditions.
Vaporisation and distribution to ash streams were studied for those elements
included in the EU's co-incineration directive (Hg, Cd, Pb, Mn, Cu, Cr, Ni,
Co, Sb, As, V). Increase of Cl-concentration in the feedstock was observed to
enhance the transfer of many toxic elements to finest fly ash, probably due to
the formation of volatile chlorides in the FB furnace. The surface area to
weight ratio of fly ash increases with decreasing particle size, causing
increased condensation of volatilised trace elements onto the finest size
fraction. Elements bound to ultra-fine fly as can pass through conventional
gas cleaning devices along with genuinely gaseous species. As a result, the
measured loss of toxic elements from the combustors studied was higher than
predicted by the thermodynamic calculations.
Original language | English |
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Title of host publication | EUBCE Conference Proceedings 2002 |
Publisher | ETA-Florence Renewable Energies |
Number of pages | 5 |
Publication status | Published - 2002 |
MoE publication type | B3 Non-refereed article in conference proceedings |
Event | 12th European Conference and Exhibition on Biomass for Energy, Industry and Climate Protection - Amsterdam, Netherlands Duration: 17 Jun 2002 → 21 Jun 2002 Conference number: 12 |
Conference
Conference | 12th European Conference and Exhibition on Biomass for Energy, Industry and Climate Protection |
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Country/Territory | Netherlands |
City | Amsterdam |
Period | 17/06/02 → 21/06/02 |