Possibility of using alternative fuels in Polish power plants in the context of mercury emissions

The progressive decarbonisation of industry is leading to a reduction in coal consumption and the substitution for with other types fuels, including waste-derived alternative fuels. These fuels are characterised by high variation content highly toxic mercury. Co-combustion can cause significant emissions, exceeding mercury emission limits. Various (refuse-derived fuel (RDF), waste paper, textiles, plastics, film, tires their char, sewage sludge) were examined content. analysed ranged from 0.4 92.0 µg Hg/MJ, an average 17.7 Hg/MJ. highest RDFs (2.0–79.3 Hg/MJ) sludge (42.3–92.0 Hg/MJ). An acceptable amount RDF added hard which would remain within limits was estimated be 9–24% chemical energy blend. For sludge, this 5–13%. brown coal, much higher than co-combustion has positive effect on reducing emissions. It possible meet 95% contribution coming RDF. blending various supported mild pyrolysis high-mercury allows relatively low produced. Such may contribute emissions coal-fired power plants Poland.