典型燃煤电厂浆液冷却烟气消白设施SO3治理效果测试研究

doi:10.11930/j.issn.1004-9649.202004179

摘要/Abstract

摘要： 分别采用控制冷凝法和异丙醇吸收法对某1 000 MW燃煤发电机组浆液冷却烟气消白设施的烟气SO₃控制效果开展测试。结果表明，机组烟气湿法脱硫设施对SO₃去除效率为62.50%（控制冷凝法）和64.63%（异丙醇吸收法）。烟气经现有超低排放设施协同治理后SO₃质量浓度低于3 mg/m³。浆液冷却设施对SO₃的去除效率仅为6.68%（控制冷凝法）和5.55%（异丙醇吸收法），烟气SO₃控制效果和环境效益相对较低。建议基于科学论证审慎实施燃煤电厂烟气消白工作，应进一步开展高效SO₃治理技术、测试标准和环境管理政策研究。

关键词: 超低排放, 消白, 浆液冷却, SO₃, 控制冷凝法, 异丙醇吸收法

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

吴家玉, 朱杰, 莫华, 张峰, 帅伟, 张晴, 那钦. 典型燃煤电厂浆液冷却烟气消白设施SO₃治理效果测试研究[J]. 中国电力, 2020, 53(8): 145-150,172.

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

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典型燃煤电厂浆液冷却烟气消白设施SO₃治理效果测试研究

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

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