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Enhancement of Desulfurization System Efficiency in 1,000 MW Coal-Fired Power Plants  

Lee, Young-Su (Department of Power Engineering, Hanyang University)
Moon, Seung-Jae (Department of Mechanical Engineering, Hanyang University)
Publication Information
Plant Journal / v.17, no.2, 2021 , pp. 32-41 More about this Journal
Abstract
Recently, air environmental issues such as fine dust have rapidly emerged as national issues, and intensive environmental regulations are being applied to coal-fired power plants. This study introduces the case of improving the performance of desulfurization facilities for removing sulfur oxides and dust, which are the main air pollutant emitters of coal-fired power plants, and conducted four case studies to improve the performance of 1,000 MW power plants currently in operation and carried out construction. Liquid ratio was increased by remodeling the absorption tower of desulfurization facilities, and vaporization reaction was promoted by increasing the flow rate of oxidized air. In addition, the gas heater leakage rate was improved to improve the efficiency of final desulfurization facilities. It is expected that performance improvement work considering harmony with existing facilities will satisfy the regulations(25ppm of sulfur oxides, 5mg/Sm3) that will be applied from 2023, and can be referred to other thermal power plants for review and application.
Keywords
Power Plant; Process Design; Desulfurization System; Performance Improvement; Absorber;
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