Abstract. Some aspects of boiler toxic pollutant emission reduction in the presence of carbamide are discussed in the paper. Theoretical pollution reduction investigation was conducted by using thermodynamic function calculation methods and evaluating the Gibbs' energy value changes at various temperatures. The equations of these changes were derived. It was determined that the most reliable compounds, formed during the reaction between carbamide and nitrogen oxides, are CO 2 , nitrogen and water. Other products are formed when carbamide is oxidized. Also, it was found that carbamide could reduce sulphur oxides to sulphur, and in some cases -to H 2 S. The pyrolysis of carbamide is possible at temperatures above 450 K.
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