Plasma enhancement of combustion of solid fuels

Аскарова, А.С.; Карпенко, Е. И.; Мессерле, В. Е.; Устименко, А. Б.

doi:10.1134/s0018143906020081

Cited by 18 publications

(15 citation statements)

References 4 publications

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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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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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“…Tables 2 and 3 show basic geometric parameters and also technical parameters of the combustion chamber of the BKZ-75 boiler. For the numerical solution, the initial and boundary conditions were used, also the control volume method for solution of differential equations was applied [12,[28][29][30].…”

Section: Basic Characteristics Of the Boilermentioning

confidence: 99%

Simulation of Low-Grade Coal Combustion in Real Chambers of Energy Objects

et al. 2019

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The aim of the work is to create new computer technologies for 3D modelling of heat and mass transfer processes in high-temperature physicochemically reacting environments that will allow to determine the aerodynamics of the flow and heat and mass transfer characteristics of technological processes occurring in the combustion chambers in existing coal-fired thermal power plants of the Republic of Kazakhstan. The novelty of the research lies in the use of the latest information technologies of 3D modelling, which will enable project participants to obtain new data on complex heat and mass transfer processes when burning pulverized coal in real combustion chambers operating in Kazakhstan’s Thermal Power Plants (TPP). A numerical simulation, including thermodynamic, kinetic and threedimensional computer simulation of heat and mass transfer processes when burning low-grade fuel, will allow finding optimal conditions for setting adequate physical, mathematical and chemical models of the technological process of combustion of burning high ash coals. The computer modelling methods proposed for the development are new and technically feasible, since coal-fired power plants all over the world use all types of coal. The developed technologies will allow replacing or eliminating the conduct of expensive and labour-consuming natural experiments on coal-fired power plants.

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“…In this case, regardless of the quality of the original product, we get highly reactive twocomponent fuel. When mixed with secondary air in the combustion chamber, it is intensely ignited and burns steadily without fuel oil or gas, traditionally used to ignite and stabilize the combustion of lowgrade pulverized coal [14][15].…”

Section: Statement Of the Problem Of Burning Thermochemically Activatmentioning

confidence: 99%

“…This research builds on the achievements of modern thermal physics, on the use of new numerical methods for 3-D modeling, on the construction of efficient computational algorithms and new computational models, which make it possible to more accurately describe the actual physical and chemical processes occurring during at burning of power fuel in the combustion chambers of existing energy facilities [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%