Investigation of energy efficiency of heating systems in power plant boilers for different conditions with CFD analysis

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2023-08-05 DOI:10.1007/s13762-023-05130-1

H. D. Yildizay, Ö. Aydin, Y. Erhan Böke, I. Y. Uralcan, F. Sen

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Abstract

Flame shape temperature distribution, CO_2, and O₂ concentrations in the pulverized coal-fired boiler at Seyitömer Thermal Power Plant are numerically investigated for real operating conditions. The numerical results are compared with the measured results to validate the model. It is observed that the calculated and measured temperature differences are less than 50 K. For both numerical analysis and measurements, a decrease in O₂ concentrations and an increase in CO₂ concentrations in the flame zone of the furnace are observed. The flame shape was numerically analyzed for various operating conditions of the burners. It is observed that the flame does not fill the boiler, narrows along the boiler, and disturbs the homogeneity of the temperature distribution for the cases when the opposite burners 2 and 5 are switched off separately. As a result, coal burners should be shut down during operation, considering proper flame formation. This study has provided important information to the literature for more efficient and environmentally friendly coal combustion in thermal power plants.

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用CFD分析方法研究电厂锅炉不同工况下供热系统的能效

对Seyitömer火电厂煤粉锅炉火焰形状、温度分布、CO2和O2浓度进行了数值模拟。将数值结果与实测结果进行了比较，验证了模型的正确性。结果表明，计算和测量的温度差均小于50 K。在数值分析和测量中，观察到炉内火焰区的O2浓度下降，CO2浓度增加。对燃烧器在不同工况下的火焰形态进行了数值分析。结果表明，当对侧燃烧器2和5分别关闭时，火焰不充满锅炉，沿锅炉方向变窄，并扰乱了温度分布的均匀性。因此，考虑到适当的火焰形成，在运行期间应关闭燃煤燃烧器。本研究为火力发电厂煤的高效环保燃烧提供了重要的文献资料。

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.