Co-combustion of recycled RDF and PDF fuels
Book
·
OSTI ID:495346
- Neste Oy Corporate Technology, Porvoo (Finland)
- Borealis Polymers Oy, Porvoo (Finland)
Energy recovery of used materials can be performed as mixed municipal solid waste (MSW) incineration or as fuel recovery for co-combustion. Recovered fuels are refuse derived fuel (RDF), which is mechanically separated and processed from MSW, and packaging derived fuel (PDF), which is the source separated, processed, dry combustible part of MSW. A one year co-combustion of RDF with peat and coal was carried out in a 65 MW CFB power plant at Kauttua, Finland. The efficiency of the combustion process and the corrosion behavior of the boiler were particular focuses of attention in this study. Five different PDFs were also co-combusted in the same power plant. A wide analytical program was carried out including the solid and gaseous emission measurements. Results were encouraging, showing that RDF and PDFs are technically and economically feasible and environmentally friendly fuels for co-combustion. Low CO emissions showed clean and efficient combustion. SO{sub 2} emissions decreased, because part of the coal was replaced by RDF and PDFs. HCl emissions increased when the chlorine content of the fuel mixture increase, because limestone injection was not used. Heavy metals concentrated to the fly ash in unleachable form. PCDD/F (dioxin) emissions were in the normal power plant level and far below the strictest incineration limit. Long-term co-combustion of 10% RDF did not cause any high temperature chlorine corrosion of the superheater materials (500 C). The results showed that it is useful and technically possible to combine resource and waste management in the form of fuel recovery and energy production in the normal power plants.
- OSTI ID:
- 495346
- Report Number(s):
- CONF-9504119--
- Country of Publication:
- United States
- Language:
- English
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