REDUCTION OF POLLUTANT EMISSIONS THERMAL POWER PLANTS DURING TRANSITION TO PRINCIPLES OF BEST AVAILABLE TECHNOLOGIES
The main stages of transition of thermal power enterprises to principles of best available technologies are presented. Regime-technological measures recommended for implementation at thermal power plants in framework of new environmental legislation provided by the Federal law of 21.07.2014 № 219-FL "On amendments to the Federal law "On environmental protection" and certain legislative acts of Russian Federation" are presented. Methods of introducing recirculating gases into blast air, into furnace and into slots under burners of the TGM-84B power boiler are considered. Calculations of efficiency of application of best available technologies based on recirculation of products of combustion in a boiler furnace for reduction of emissions of oxides of nitrogen in atmosphere are executed. Optimal share of input gas recirculation to reduce intensity of formation of nitrogen oxides in combustion chamber given deterioration of efficiency of boiler plant due to increased losses of heat with leaving gases.