Test Study on SO3 Control Effect of Slurry Cooling Wet Plume Treatment Project in a Typical Coal-Fired Power Plant

doi:10.11930/j.issn.1004-9649.202004179

Abstract

Abstract: In this paper, the SO₃ control effect of the slurry cooling wet plume treatment project is tested and evaluated. With the controlled condensation method and the isopropanol absorption method applied respectively in a 1 000 MW coal-fired power generation unit, the testing results show that the SO₃ removal efficiency of the wet flue gas desulfurization (WFGD) system reaches 62.50% and 64.63% accordingly. The SO₃ mass concentrations of the flue gas can be controlled under 3 mg/m³ with current ultra-low flue gas emission treatment facilities. However, using the same controlled condensation method and the isopropanol absorption method, the SO₃ removal efficiency of the slurry cooling wet plume treatment project is only 6.68% and 5.55%, respectively, which indicates unsatisfactory SO₃ control effect and relatively low environmental benefit. At last, it is suggested that the wet plume treatment of coal-fired generation plants should be implemented with great caution and on the basis of scientific verifications. Further studies are needed for efficient SO₃ control techniques, SO₃ testing benchmarks and related environmental management policies.

Key words: ultra-low emission, wet plume treatment project, slurry cooling, SO₃, controlled condensation method, isopropanol absorption method

WU Jiayu, ZHU Jie, MO Hua, ZHANG Feng, SHUAI Wei, ZHANG Qing, NA Qin. Test Study on SO₃ Control Effect of Slurry Cooling Wet Plume Treatment Project in a Typical Coal-Fired Power Plant[J]. Electric Power, 2020, 53(8): 145-150,172.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202004179

https://www.electricpower.com.cn/EN/Y2020/V53/I8/145

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Test Study on SO₃ Control Effect of Slurry Cooling Wet Plume Treatment Project in a Typical Coal-Fired Power Plant

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