Greenhouse gas emission reduction by biomass co-combustion with lignite

The paper presents a study case concerning the CO₂ reduction which could be obtained by the co-combustion lignite-biomass at a 420 t steam/h lignite fuelled boiler in different running conditions, as well a monetary quantification of these results, considering that the range of allowances price on EU-ETS is between 10 and 30 euro/t CO₂. The case study took into consideration the influence of boiler load on CO₂ emission, as well as the number of working hours/year. The biomass thermal input was considered between 5 and 50%. The case study shows that there will be important financial benefits obtained by trading CO₂ emissions reduction. The available allowances would be sold on the market, the revenues being used for environment investments.