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Examples of Full scale tests on BFB Waste to Energy boilers (WtE) with direct impact on the future operation of the facility
University of Borås, School of Engineering.
University of Borås, School of Engineering.
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2012 (English)Conference paper (Other academic)
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

The growing problem with municipal solid waste has helped to accelerate de development of Waste to Energy plants (WtE). However, WtE-plants have problems with agglomeration, deposition and corrosion. And at the same time new waste streams are considered for combustion. Co-combustion has sometimes proven to have positive effects on the combustion environment. In this project full scale tests were performed on two twin 20 MWth WtE Bubbling Fluidized Bed (BFB) boilers in Borås, Sweden. The aim of the research was to investigate if a lowered bed temperature by means of flue gas recirculation or addition of animal waste to the normal waste mix (NWM) could improve the boiler performance. The bed temperature was decreased from 870°C, the boiler design temperature, to around 750°C. The animal waste is a pumpable slurry consisting of crushed carcasses and slaughterhouse waste classified with risk of infection because of BSE (Bovine spongiforme encephalopathy or the mad cow disease). The result shoved both decreased deposit formation rate and decreased agglomeration tendency of the bed. And in the case with animal waste addition the NOx emission was reduced with 50% compared to ordinary performance. Furthermore the ammonia addition for NOx reduction was also cut by half in this case.

Place, publisher, year, edition, pages
Keyword [en]
WtE, BFB, RDF, waste, agglomeration, deposit, NOx, Resursåtervinning
National Category
Energy Engineering
Research subject
Resource Recovery
URN: urn:nbn:se:hb:diva-6864Local ID: 2320/11635OAI: diva2:887571
SCEJ Symposium on Fluidization November 8 - 9, 2012, Sakai, Osaka, Japan Organized by Fluidization Research Group, Division of Particle and Fluid Processes, The Society of Chemical Engineers, Japan (SCEJ) and 65th IEA-FBC meeting
Available from: 2015-12-22 Created: 2015-12-22

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Pettersson, AnitaMoradian, FarzadRichards, Tobias
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