Analysis of Air Pollutant Emission Characteristics of Ultra-low Emission Coal-Fired Units Based on CEMS Data

doi:10.11930/j.issn.1004-9649.202203075

Abstract

Abstract: Taking 54 ultra-low emission coal-fired units as the research object, the annual emission compliance rate, annual emission concentration, emission performance and other emission characteristics of major air pollutants (particulate matter, SO₂, NO_x) were compared and analyzed. The causes of excessive emissions and failures were analyzed on the basis of the survey of the commissioning and failures of environmental protection facilities. As shown by the results, the annual up-to-standard emission rates of particulate matter, SO₂, and NO_x in the coal-fired units participating in the survey were 99.981%, 99.962%, and 99.893%; The average emission performance of particulate matter, SO₂, and NO_x were 11.11, 68.16, and 140.26 mg/(kW·h), respectively, which meet and exceed the requirements of national standards; The proportions of the emission of particulate matter, SO₂, and NO_x exceeding the standard during the start-stop period were 54%, 64%, and 57%, respectively, indicating that the emission concentrations of particulate matter, SO₂, and NO_x during the start-stop process of the units were difficult to control. Therefore, eliminating the influencing factors that restrict the normal operation of environmental protection facilities during start-stop period is the research direction of subsequent technical public relations.

Key words: ultra low emission, atmospheric pollutant, emission concentration, emission performance

QU Litao, QI Xiaohui, WANG Dexin, YU Honghai. Analysis of Air Pollutant Emission Characteristics of Ultra-low Emission Coal-Fired Units Based on CEMS Data[J]. Electric Power, 2023, 56(2): 171-178.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202203075

https://www.electricpower.com.cn/EN/Y2023/V56/I2/171

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