Selection of the optimal kinetic scheme for the formation of nitrogenous substances in the simulation of low-quality coal combustion
Bolegenova S. Askarova A. Georgiev A. Beketayeva M. Maximov V. Adilbayev N.
2024Bulgarska Akademiya na Naukite
Bulgarian Chemical Communications
2024#56Issue 138 - 43 pp.
The methods used to reduce emissions of harmful substances (mainly nitrogen oxides) at the moment still do not meet environmental requirements and don’t give the desired result. In this article, a study was carried out by methods of 3D computer modeling of mass transfer processes using the example of low-quality coal combustion in the furnace chamber of a real heat-power facility. The choice of the kinetic model of the formation of nitrogenous substances is important for determining the most realistic scheme of the technological process of fuel combustion. The novelty of the proposed work is that in order to choose the optimal chemical model, two kinetic schemes for the formation of NO are considered, these are the Mitchell Tarbell model and the De Soete model. As a result of the conducted computational experiments, the high efficiency and adequacy of the Mitchell Tarbell kinetic model was noted in relation to the high-ash coal under study. This allows to conclude that the use of the Mitchell Tarbell model to reproduce the process of burning low-grade coals is preferable. The results obtained will help to realistically estimate the amount of NO emissions, as well as to design and implement various approaches to their minimization.
3D computer modeling , emissions , kinetic model , low-grade coal , nitrogenous substances
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ETP SRI of Al-Farabi Kazakh National University, Al-Farabi av., 71, Almaty, 050040, Kazakhstan
Al-Farabi Kazakh National University, Department of thermal physics and technical physics, Al-Farabi av., 71, Almaty, 050040, Kazakhstan
University of Telecommunications and Post, Department of General Engineering, 1 Acad. Stefan Mladenov str., Sofia, 1700, Bulgaria
ETP SRI of Al-Farabi Kazakh National University
Al-Farabi Kazakh National University
University of Telecommunications and Post
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