INVESTIGATION OF THE CONTRIBUTION OF COAL POWER TO ATMOSPHERIC AIR POLLUTION OF THE CITY OF UST-KAMENOGORSK WITH HYDROGEN SULFIDE

Abstract

Electric energy in Kazakhstan is 56% generated by coal-fired thermal power plants. High-energy intensity of production and worn-out infrastructure result in high emissions. Analysis of the results of monitoring the quality of atmospheric air in the cities of Kazakhstan shows high hydrogen sulfide pollution mainly in industrial centers. This problem is most acute in the city of Ust-Kamenogorsk. At the same time, there are no significant sources of hydrogen sulfide emissions that could create an unfavorable situation. The article presents the results of a study on the determination of hydrogen sulfide in the flue gases of boilers and a quantitative assessment of emissions of this substance into the atmosphere. Scientific work is of great practical importance for expanding the theory of fuel combustion products, as well as in the aspect of improving the sanitary condition of the atmospheric air of the city of Ust-Kamenogorsk. The research used methods of computational mathematics and mathematical statistics, mathematical modeling using modern software, as well as instrumental methods for measuring industrial emissions. It was found that there is no H₂S in the flue gases during the combustion of fuel oil, while the concentration of H₂S in the flue gases depends on the combustion method during the combustion of coal. For bed furnaces, it is 22.3 mg/m³ (n.o.), for chamber furnaces 28.5 mg/m³ (n.o.). In addition, the article presents an estimate of gross emissions of hydrogen sulfide from boilers on the scale of the city of Ust-Kamenogorsk.