Concentration of Nitrogen Oxides When Burning Wood Pellets of Various Origins

The paper examined the impact of wood pellets of different type on the emission of nitrogen oxides (NO_x) formed during the combustion process in a low-power heating boiler. The study aim was to determine the dependencies of the NO_x emission levels on the chemical composition of fuel. The test was carried out using a model of a combustion chamber equipped with a dedicated burner. The analysis of the results confirmed the relationship between flue gas and the formation of NO_x. The obtained results prove the possibility of reorganizing the combustion process in order to reduce the NO_x emission by selecting a proper composition of raw materials when producing wood pellets.