Abstract
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.
Highlights
Kazakhstan is currently a developed country with a population of around 18 million people spread unevenly over an area of 2.7 million km2 [1]
From the analysis of the three-dimensional distribution shown in Fig. 3, it can be said that the flow of the air mixture with the combustion products has a vertical character in the region of the burners and in the lower part of the combustion chamber at a height from 2 m to 8 m
The used method give an adequate character of the processes of heat and mass transfer and formation about emissions of harmful substances during the burning of low-quality Karaganda coal of grade KR-200 with a high ash content in the combustion chamber of the existing power boiler BKZ-75 of Shakhtynskaya Thermal Power Plants (TPP)
Summary
Kazakhstan is currently a developed country with a population of around 18 million people spread unevenly over an area of 2.7 million km2 [1]. Kazakhstan is rich in natural resources including coal, oil, natural gas and uranium and has a significant renewable potential from wind, solar, hydro-power and biomass [2]. Due to the rapid economic development of Kazakhstan and the related increase in demand for electricity, by 2020, a significant modernization of existing energy facilities is needed in addition to the construction of new power plants with a capacity of 20 GW [3]. The Republic of Kazakhstan is dependent on fossil fuels for the power generation. Coal-fired plants lead to a greenhouse gas emissions and impacts on human health and the environment. 13% of Kazakhstan’s power is generated by hydroelectric power plants while the other 87% is from thermal-powered plants (75% coal-fired stations)
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