Co-firing of wood and wastes with fossil fuels to produce clean power with reduced emissions

The interest for renewable fuels has been increased clearly during last few years.The most important reason for this is the concern of clean environment.Especially the Kyoto objects set in have forced us to think realistic and most environmentally friendly ways to reduce CO2 emissions. Co-firing of biomass-based fuels and recovered fuels with fossil fuels has found to be one possibility for cleaner power production.Utilization of those non-CO2 producing fuels has many local effects and advantages.The modern power production applications based on co-firing technologies ensure a clean method for power generation with reduced emissions.Especially the reduction of CO2 emissions will be the most critical target in the following years.In addition, the flexible utilization of local renewable fuels produces new working places on energy sector.The utilization of biomass-based fuels is not, however, always unproblematic for power producers.There exist many examples where the unexpected ash behavior has caused problems for power plant availability.The problems will be discussed in this paper.