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Samförbränning av bilfluff, rötslam och avfall i en 20 MW fluidbäddpanna - Studier av bränslesammansättningens påverkan på beläggningsbildning
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- Blomqvist, Evalena (author)
- RISE,Förbrännings- och aerosolteknik
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- Eskilsson, David (author)
- RISE,Förbrännings- och aerosolteknik
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- Johansson, Andreas (author)
- RISE,Förbrännings- och aerosolteknik
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- (creator_code:org_t)
- 2007
- Swedish.
- Series: SP Arbetsrapporter ; 2007:11
- Reports (peer-reviewed)
Abstract
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- In order to prevent a further increased use of resources and to decrease the environmental impact from landfills, organic wastes are today diverted towards material and energy recovery. This creates a waste market with an increasing number of waste fractions that needs to be treated properly. As an example, in Sweden it has recently been prohibited to landfill source separated combustible waste (2002) and organic waste (2005). Wastes as automotive shredder residue (ASR) and sewage sludge can no longer be landfilled and needs to be either material or energy recovered, which challenge the waste treatment sector. This work investigates the effects of ASR and sewage sludge co-combustion in a 20 MW Energy-from-Waste plant (bubbling fluidised bed). The long term objective of the work is to increase the fuel flexibility, the boiler availability and the power production. This report focus on boiler operation and combustion performance in terms of agglomeration, deposit rates and emissions. In addition to the tests with ASR and sewage sludge, repeated measurements were performed during normal load as a reference. The results show that the co-combusted fractions of ASR and sewage sludge, which on mass basis constituted 6 % and 15 % respectively, did not increase the risk for agglomeration or deposits on heat-exchanging surfaces. Instead, compared to the two reference cases, the deposit rates decreased when sewage sludge was added. Only minor variation in the emissions was seen between the different cases. The levels of I-TEQs were far below the legislated values in all cases.
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