Analiza kriterijuma za procenu formiranja naslaga na kotlovskim grejnim površinama pri sagorevanju biomase

Abstract

Combustion of different fuels in boiler furnaces leads to formation of fireside deposits on irradiated as well as on convective surfaces. This problem is not a new one, but it became one of the main operational problems in boilers using low rank coal and some sort of biomass, especially agricultural. In the paper presents the results of the analysis of the criteria for estimating the formation of deposits on heating surfaces of boilers in the case of biomass combustion. Also, the ash related problems during biomass combustion in the boiler furnace were considered. Key empirical correlations have been tested for slagging and fouling in case of coal or biomass combustion based on testing of different types of fuel in laboratory and real furnace conditions. The analysis has shown that many sorts of agricultural biomass as well as the Kosovo lignite have a high fouling and slagging tendency, as confirmed by indicators based on the chemical composition of fuel ash and ash solubility temperatures.