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

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。

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

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.