Numerical simulation of the coal combustion process initiated by a plasma source

Аскарова, А.С.; Мессерле, В. Е.; Устименко, А. Б.; Bolegenova, S.А.; Maksimov, V. Yu.

doi:10.1134/s0869864314060092

Cited by 21 publications

(18 citation statements)

References 6 publications

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“…The results of which allow to optimally solve scientific and project engineering tasks in this area (improvement, design of new boilers; burners upgrade; development of multistage fuel combustion systems, optimization of combustion processes and other) [5][6][7]18]. At the present stage of development of the energy industry, immediate consideration and resolution of environmental issues are required.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of heat and mass transfer processes in the combustion chamber of industrial power plant boiler. Part 1. Flow field, temperature distribution, chemical energy distribution

Аскарова

Maximov

Bolegenova

et al. 2017

ACM

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In the present paper, the furnace chamber of the BKZ-160 boiler of Almaty TPP-3 (Kazakhstan) has been calculated. The thermal characteristics of the process were studied in the form of the distribution of temperature fields and chemical energy, and the aerodynamics of the combustion chamber was also calculated. The type of fuel, its elementary and fractional composition, exerts the greatest influence on the course of heat-mass exchange processes and aerodynamics. The computational experiment was carried out with two models of particle size distribution: a polydisperse fuel flame (the particle diameter varies from 10 to 120 μm) and monodisperse fuel flame (particle size identical and equal to d p = 60 μm). Based on the results of the computational experiments, the main regularities in the distribution of heat fluxes in the combustion chamber volume and flow aerodynamics were obtained. It is shown that the greatest thermal load falls on the central region of the walls of the combustion chamber and the location of the burner devices, which is typical for both mono-and polydisperse fuel flames. The temperature data obtained as a result of the computational experiment showed better convergence with the empirical data obtained directly at TPP-3. Aerodynamics of the flow for the two selected models of particle size distribution has insignificant differences, but how they affect other characteristics of the process is one of the following tasks in view of the authors. It should be noted that the calculation of the polydisperse fuel flame takes much more calculation time.

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Section: Introductionmentioning

confidence: 99%

Numerical investigation of heat and mass transfer processes in the combustion chamber of industrial power plant boiler. Part 1. Flow field, temperature distribution, chemical energy distribution

Аскарова

Maximov

Bolegenova

et al. 2017

ACM

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“…The present paper provides an overview of the current capabilities of the CFD-computer code FLOREAN (acronym for FLOw and REActioN) developed at the Institute for Fuel and Heat Technology in Technical University of Braunschweig (Germany) and Al-Farabi Kazakh National University (Kazakhstan) (Askarova, Safarik, et al 2015;Askarova, Messerle, et al 2014;Askarova, Karpenko, et al 2006).…”

Section: Resultsmentioning

confidence: 99%

3-D Modeling of Heat and Mass Transfer during Combustion of Solid Fuel in Bkz-420-140-7C Combustion Chamber of Kazkhstan

Аскарова

Bekmukhamet

Bolegenova

et al. 2016

JAFM

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In this paper the results obtained by the numerical method of modeling of Ekibastuz coal burning in BKZ-420 combustion chamber of Kazakhstan Power Plant are presented. They are devoted to the numerical simulation of combustion processes in the furnace boiler BKZ-420. Boiler's steam generates capacity equal 420 T/h. Boiler has six vertical pulverized coal burners arranged in two levels with three burners on the front wall of the boiler. High ash, low-grade coal from Ekibastuz burned in the furnace. Its ash content is 40%, volatile -24%, humidity-5%, highest calorific value is 16750 kJ/kg. Milling dispersity of coal was equal to R 90 = 15%.It was shown in this research that the most intense burning is observed in the central part of the chamber where the flow temperature reaches about 980 °C and it is seen that the temperature reaches a peak in the cross sections of the burners location. The combustion reaction there occurs more intensively.

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“…In this paper software package FLOREAN [1,[6][7][8][9]] for 3-D modelling of coal-dust combustion in furnaces of real-sized boilers was used. This program enables to calculate velocity components u, v, w, temperature T, pressure P, concentration of combustion products and other characteristics of combustion process all over the combustion space and at its exit.…”

Section: Coal Combustionmentioning

confidence: 99%

Computational modeling of heat and mass transfer processes in combustion chamber at power plant of Kazakhstan

et al. 2016

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Abstract. In this paper the results obtained by the method of numerical modelling of Ekibastuz coal burning in furnace of Kazakhstan Power Plant. Numerical experiment was carried out on the basis of three-dimensional equations of convective heat and mass transfer, taking into account the heat propagation, heat radiation, chemical reactions and multiphase structure of the medium to predict the influence of different water content in coal on overall furnace operation and formation of combustion products.

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Numerical simulation of the coal combustion process initiated by a plasma source

Cited by 21 publications

References 6 publications

Numerical investigation of heat and mass transfer processes in the combustion chamber of industrial power plant boiler. Part 1. Flow field, temperature distribution, chemical energy distribution

Numerical investigation of heat and mass transfer processes in the combustion chamber of industrial power plant boiler. Part 1. Flow field, temperature distribution, chemical energy distribution

3-D Modeling of Heat and Mass Transfer during Combustion of Solid Fuel in Bkz-420-140-7C Combustion Chamber of Kazkhstan

Computational modeling of heat and mass transfer processes in combustion chamber at power plant of Kazakhstan

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