Abstract
The state of the issue, the main provisions and the results of the computational and graphic comparative analysis of theoretical models of the processes of formation of air and fuel nitrogen oxides are briefly described. The scientific novelty of the work consists of the methodology and experimental results on the influence of pyrolysis and phase shift of the input of coal dust and air on the formation of fuel nitric oxide. In the numerical simulation, the effect parameters such as fuel consumption, fuel temperature and air temperature on the nitrogen oxides' formation processes is investigated. Increasing the concentration of oxygen from 16 to 18% significantly increases both the temperature and the formation of thermal nitrogen.