ANALYSIS OF THE BURNING ENVIRONMENT OF A BOILER UNIT DURING THE COMBUSTION OF NON-DESIGN COAL

This paper presents the results of a study of the temperature fields of combustion products of nondesign coal from the Karazhyra open pit in the combustion space of a boiler unit. The purpose of the work is to establish operating conditions for the combustion chamber of the KV-T-116.3-150 boiler unit, ensuring the absence of slagging of radiation heating surfaces, reliable circulation in the boiler and minimal heat loss when burning off-design fuel.Experimental studies were carried out to determine the temperature of combustion products of nondesign fuel, which made it possible to construct gas isotherms and evaluate the operation of the boiler combustion chamber. Laboratory tests were also carried out on samples of non-design fuel, and its qualitative composition was determined. Heat losses during combustion of non-design fuel have been determined. Data on the efficiency of the boiler installation with variable heating output were obtained, and the optimal operating mode of the boiler unit was established.The subject of this work is of particular interest due to the need to control and reduce the intensity of slagging and contamination of heating surfaces, reduce the level of harmful emissions, and intensify heat exchange processes in the flues of boiler plants when burning modern fuels.To examine the heat exchange processes in the boiler, the method of pyrometric study of the combustion space was used at different heat outputs.