Influence of phosphorus on sulphur capture during co-firing of sewage sludge with wood or bark in a fluidised bed

Interference from phosphorus on sulphur capture during co-firing of sludge with wood has been investigated in a circulating fluidised bed boiler. Chemical equilibrium analyses were performed on the combustion system to complement the experimental results. It was found that the relatively high conten...

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Bibliographic Details
Published in:Fuel (Guildford) 2006-09, Vol.85 (12), p.1671-1678
Main Authors: Elled, Anna-Lena, Åmand, Lars-Erik, Leckner, Bo, Andersson, Bengt-Åke
Format: Article
Language:English
Subjects:
Applied sciences
Boilers
Co-combustion
Energi och material
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Phosphorus interference
Sewage sludge
Sulphur capture
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Summary:Interference from phosphorus on sulphur capture during co-firing of sludge with wood has been investigated in a circulating fluidised bed boiler. Chemical equilibrium analyses were performed on the combustion system to complement the experimental results. It was found that the relatively high content of phosphorus in municipal sewage sludge interferes with the sulphur capture by occupying calcium, which otherwise would be available for reaction with sulphur. This fact must be taken into account when sulphur capture strategies are decided for reduction of sulphur dioxide emissions from sewage sludge as an additional fuel.
ISSN:0016-2361
1873-7153
1873-7153
DOI:10.1016/j.fuel.2006.02.008