Numerical simulation of nitrogen oxide formation in dust furnaces

Keywords: Coal particles, Burner, Nitrogen oxides, Atomic nitrogen, Molecular nitrogen


Even though natural sources of air pollution account for over 50 % of sulphur compounds, 93 % of nitrogen oxide which are the most dangerous artificial anthropogenic sources of air pollution and primarily associated with the combustion of fossil fuel. Coal-fired thermal power plants and industrial fuel-burning plants that emit large quantities of nitrogen oxides (NО and NО2), solids (ash, dust, soot), as well as carbon oxides, aldehydes, organic acids into the atmosphere pollute the environment in majority. In the present work, a mathematical model and a scheme for calculating the formation of nitrogen oxide has been developed. Also, the dependence of the rate of release of fuel nitrogen from coal particles at the initial stage of gasification and content of volatiles has been obtained. The main regularities of the formation of NOx at the initial section of the flame in the ignition zone of the swirl burner flame during the combustion of Ekibastuz coal have been revealed. Modern environmental requirements for the modernization of existing and the creation of new heat and power facilities determine the exceptional relevance of the development of effective methods and constructions to reduce emissions of nitrogen oxides, sulfur oxides and ash to 200, 300, and 100 mg/nm3 at a=1.4. The dust consumption in all experiments was kept constant and amounted to 0.042 g/s, as well as with the results of calculating the thermal decomposition of the Ekibastuz coal dust, the recombination of atomic nitrogen into nitrogen molecules, and the kinetics of the formation of fuel nitric oxide.

It was found that despite the presence of oxygen in Ekibastuz coal for gases Odaf=11.8 % in an inert atmosphere, nitrogen oxides are not formed


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Author Biographies

Bulbul Ongar, Academy of Logistics and Transport; Al-Farabi Kazakh National University

Department of Power Engineering

Department of Thermal Physics and Technical Physics

Hristo Beloev, University of Ruse

Department of Thermotechnics, Hydraulics and Environmental Engineering

Iliya Iliev, University of Ruse

Department of Thermotechnics, Hydraulics and Environmental Engineering

Assem Ibrasheva, Satbayev University

Department of Automation and Control

Anara Yegzekova, Academy of Logistics and Transport

Department of Power Engineering


Belikov, S. E. (2006). Integrated development of methods for reducing emissions of nitrogen oxides from thermal power plants by optimization of the combustion process and methods of fuel combustion. Moscow, 282.

Ongar, B., Iliev, I., Smagulova, G., Mergalimova, A. (2020). Numerical Simulation of the Formation of Nitrogen Oxides in Pulverized Furnaces. Journal of Engineering Science and Technology Review, 171–175. Available at:

Umyshev, D. R., Dostiyarov, A. M., Tyutebayeva, G. M. (2017). Experimental investigation of the management of NOx emissions and their dependence on different types of fuel supply. Espacios, 38 (24).

Umyshev, D., Iliev, I. (2020). Research of the Combustion Process in a Heat Generator with Ansys Fluent. 2020 7th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). doi:

Al-Abbas, A. H., Naser, J., Dodds, D. (2011). CFD modelling of air-fired and oxy-fuel combustion of lignite in a 100KW furnace. Fuel, 90 (5), 1778–1795. doi:

Yang, J., Golovitchev, V. I., Redón Lurbe, P., López Sánchez, J. J. (2012). Chemical Kinetic Study of Nitrogen Oxides Formation Trends in Biodiesel Combustion. International Journal of Chemical Engineering, 2012, 1–22. doi:

Chernetsky, M., Dekterev, A. (2011). Mathematical model of the processes of heat exchange and burning of pulverized coal in flaring. The physics of combustion and explosion, 3, 37–46.

Abildinova, S. K., Musabekov, R. A., Rasmukhametova, A. S., Ongar, B., Yessengabylov, I. Zh., Aldabergenova, А. О., Issayeva, G. B. (2018). The efficiency of district heating systems in conditions of joint use of heat pumps. News of the National Academy of Sciences of the Republic of Kazakhstan. Series of Geology and Technical Sciences, 4 (430), 201–207.

Mergalimova, A., Ongar, B., Georgiev, A., Каlieva, K., Abitaeva, R., Bissenbayev, P. (2021). Parameters of heat treatment of coal to obtain combustible volatile substances. Energy, 224, 120088. doi:

Zhitarenko, V., Bejan, V., Оstapenko, O. (2020). Adaptation of mathematical model of heat and energy characteristics of medium pressure boilers to real operating conditions. Technology Audit and Production Reserves, 4 (1 (54)), 23–30. doi:

Enyakin, Yu. P., Usman, Yu. M., Vereshetin, V. A. (2001). Development and research of burners with a reduced yield of nitrogen oxides. Bulletin of the Academy of Industrial Ecology, 1, 53–62.

Habib, M. A., Elshafei, M., Dajani, M. (2008). Influence of combustion parameters on NOx production in an industrial boiler. Computers & Fluids, 37 (1), 12–23. doi:

Shi, L., Fu, Z., Duan, X., Cheng, C., Shen, Y., Liu, B., Wang, R. (2016). Influence of combustion system retrofit on NOx formation characteristics in a 300 MW tangentially fired furnace. Applied Thermal Engineering, 98, 766–777. doi:

Cardona Vargas, A., Arrieta, C. E., Tumay, H. A. Y., Echeverri-Uribe, C., Amell, A. (2021). Determination of laminar burning velocity of methane/air flames in sub atmospheric environments. EUREKA: Physics and Engineering, 4, 50–62. doi:

Vascellari, M., Cau, G. (2012). Influence of turbulence–chemical interaction on CFD pulverized coal MILD combustion modeling. Fuel, 101, 90–101. doi:

Komissarov, K. B., Lutkov, S. A., Fil, A. V. (2007). Complex purification of flue gases of heat-generating plants. Rostov-on-Don: Branch of FSEIHPE, 134.

Ongar, B. (2018). The numerical research of the laws of the formation of nitrogen oxides during combustion of partially gasified coal. 6D071700 - Heat power engineering. Almaty: AUPET, 112.

Titov, S. P., Babiy, V. I., Barbarash, V. M. (1980). Study of NOx formation during combustion of coal dust. Heat power engineering, 3, 64–67.

Temirbaev, D. Zh. et. al. (2015). Pat. No. 90006 RK. Vortex pulverized coal burner. No. 30470/F23D1/02; published: 15.10.2015, Bul. No. 10.

Reid, D., Cabe, J. E., Bearden, M. D. (2010). PNNL Coal Gasification Research. Pacific Northwest National Laboratory Richland. Washington. doi:

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How to Cite
Ongar, B., Beloev, H., Iliev, I., Ibrasheva, A., & Yegzekova, A. (2022). Numerical simulation of nitrogen oxide formation in dust furnaces. EUREKA: Physics and Engineering, (1), 23-33.