Community Research and Development Information Service - CORDIS


The European Union's Clefco project (2004-06) aimed to promote the development of once through steam cycle (OTSC) CFB technology. This was carried out by increasing the process knowledge that is essential for successful boiler design and demonstration of the multi-fuel flexibility of the process. To fulfil the development needs of OTSC CFB technology, a comprehensive understanding of CFB combustion processes needed to be achieved. Intensive research in laboratory, pilot and full-scale combustors was required to fulfil the abovementioned objectives. In the project, each partner worked in its own field of research. Cooperation between partners enabled the best-possible understanding of the process. In order to study different process characteristics and verify measurements and simulations, experiments were carried out with different size reactors — VTT's laboratory scale CFB reactor, VTT's 50 kW pilot CFB reactor, Chalmers' 12 MW CFB boiler, cold rig and several commercial boilers. To find out possibilities for end-use of ash, national legislations and standards were studied. Knowledge was applied to ash management possibilities for coal combustion and co-combustion of coal and biomass. The studies were based on the ash characterisation, which was carried out for ash samples collected during the projects' combustion tests.

Additional information

Authors: NEVALAINEN H et al, VTT, Jyvaskyla (FI);KETTUNEN A et al, Foster Wheeler Energia Oy, Varkaus (FI);JOHNSSON F, Chalmers University of Technology, Gothenburg (SE);PALLARÉS D, Chalmers University of Technology, Gothenburg (SE);KOUKOUZAS N et al, CERTH/ISFTA, Athens (EL)
Bibliographic Reference: EUR 23875 EN (2009), 127 pp. Euro: 20
Availability: (Catalogue Number: KI-NA-23875-EN-S)
ISBN: ISBN: 978-92-79-11698-8
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top