• Cha, S. C.
• Lind, Terttaliisa
• Mäkipää, Martti
• Spiegel, M.
• Sroda, S.
• Orjala, Markku
• Högberg, J.
• Marca, C. La
• Baxter, C.
• Henderson, P.
• Kärki, Janne
• Oksa, M.

Abstract

This paper summarise the aim and some of the results of the FP5 Projectentitled “Mitigation of Formation of Chlorine Rich Deposits Affecting onSuperheater Corrosion under Co-Combustion Conditions“ (CORBI). This projectwas aimed to improve the understanding of corrosion mechanisms in the cases ofbiomass and waste combustion. The main focus of the work was on power plantand laboratory tests to characterize fuel and ash behaviour, deposit formationand corrosion mechanisms. The project includes power plant, pilot-scale,laboratory-scale, deposit formation, corrosion and material durability tests.The results of the tests were analysed and evaluated using theoreticalcalculations and models. The co-ordinator for the project was the TechnicalResearch Centre of Finland (VTT). Other partners were the Max-Planck-Institutfuer Eisenforschung GmbH, Vattenfall Utveckling AB, ENEL Produzione SpA andthe Joint Research Centre, Institute of Energy. The results of the presentedresearch project will give new possibilities for new and existing power plantsto increase the share of biomass and waste in energy production. It willassist in the exploitation of local fuels (such as renewable fuels,combustible residues, lignite and other hard to burn fuels) in large andmedium-scale power generation and also facilitate cost-optimised fuelselection, leading to an increased security and diversity of fuel supply.Project results contribute to achieveing higher operational reliability, costsavings, less shutdowns, higher boiler steam properties and efficiency of thepower plants. Results will be utilized in practice for power plant operation,for boiler design, for defining limits for fuel mixture ratios, and for heatexchanger material design and selection.

Topics

• corrosion
• laser emission spectroscopy
• combustion
• durability