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Numerical study ofoxy-flame-dropletcombustion ofsuspension fuelprepared from waste :научное издание Kuznetsov V.A.Bozheeva D.M.Minakov A.V.2026 год

Numerical study of oxy-flame-droplet combustion of suspension fuel prepared from waste : научное издание
статья из журнала

База данных: Каталог библиотеки СФУ
Аннотация: Due to the growth in the volume of household and industrial waste, there is a need to develop environmentally friendly methods of their disposal. One of such promising technologies could be oxy-flame-droplet combustion of suspension fuel prepared from waste. Increasing the oxygen concentration in the blast provides a number of advantages that allow: reducing the ignition induction period of low-reactivity fuel, intensifying the combustion process, increasing the efficiency of the power plant and reducing the level of harmful emissions (NOx, CO, CO2, dust). The dependence of the ignition and combustion processes of suspension fuels with high moisture content on the fuel characteristics and the properties of the combustion environment under conditions with increased oxygen content is a research gap. The paper presents a numerical study of the physical and chemical processes of oxy-flame-droplet combustion of a fuel suspension prepared on the basis of a product from the processing of worn-out automobile tires. The atomization of suspension fuel is described using the ELSA (Eulerian-Lagrangian Spray Atomization) method and the KHRT (Kelvin-Helmholtz Rayleigh-Taylor) breakup model. The description of combustion processes is based on the URANS (Unsteady Reynolds-Averaged Navier-Stokes) approach, the Lagrangian model of droplet motion and the EDC (Eddy Dissipation Concept) model. A numerical study was conducted on the dependence of spray parameters, combustion processes and the level of harmful emissions on the operating modes of a pneumatic nozzle. The results of modeling the process of spraying suspension fuel showed that increasing the speed of the oxygen jet inside the nozzle from 90 to 340 m/s leads to a decrease in the average droplet size by 3 times (from 138 to 45 μm). It was found that a decrease in the average droplet size from 150 to 50 μm (with other parameters fixed) leads to a decrease in the torch size and an increase in the local maximum torch temperature from 1170 to 1270 ◦C. It has been shown that for all the modes considered, this technology provides a low level of NOx emissions (no more than 200 (ppm, 6% O2 d.b.).
Год издания: 2026
Авторы: Kuznetsov V.A., Bozheeva D.M., Minakov A.V.
Источник: Applied Thermal Engineering

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