The factors which have influence on nitrogen conversion formation

Abstract

The European Union's normal proposal - to use 12 percent of indigenous fuel sources in Lithuania – make good conditions for expanded use of wood waste in all balance of energy. Biofuel use greener due to the fact that burning the carbon dioxide depends on natural carbon cycle flow and does not increase greenhouse effect, and does not include the sulfur dioxide. However, the ecological importance and combustion products resulting from nitrogen oxides and carbon monoxide. In the view of nitric oxide formation and the negative impact on the environment (Buinevičius and Puida 2005), it is necessary to reduce their concentrations in the atmosphere with emissions from fuel combustion in smoke. The aim of this work - using biofuels and wastes in the experimental studies, to identify the factors which have influence on nitrogen conversion coefficient formation. The paper presents selected fuels combustion technique, the measured concentrations in smoke are compared with the permissible concentration limits, as well submit as the nitrogen conversion into nitrogen oxides the dependence of nitrogen content in the fuel and oxygen content supply to the furnace. In addition, was additionally tested with varying quantities of urea-water solution sprayed pellets. It was found that the coefficient of conversion decreases with increasing nitrogen content in the incinerated fuels, and vice versa - with increasing oxygen content in the furnace, increasing the nitrogen conversion to nitrogen oxides. Also, was found influence of fuel density to NOx formation, submit calculation methodology of the nitrogen conversion coefficient.