超低排放下不同湿法脱硫协同控制颗粒物性能测试与研究

对7个实现超低排放电厂的脱硫烟气中颗粒物实测结果进行了分析,发现不同超低排放湿法脱硫技术协同控制颗粒物性能存在明显差异,采用管束式除雾器、高性能屋脊式除雾器等高效除雾器的复合塔湿法脱硫项目颗粒物脱除效率明显高于采用常规除雾器的空塔湿法脱硫项目,测试结果表明超低排放下湿法脱硫技术协同控制颗粒物性能主要受除雾器性能、塔内强化气液传质组件影响,湿法脱硫可以实现颗粒物的高效协同控制,这表明超低排放脱硫技术革新也带来了湿法脱硫系统颗粒物控制性能的进步。建议选择燃煤电厂超低排放技术路线时,应结合场地、煤质、炉型统筹考虑,更加注重各系统之间协同控制。

Test and Study on Performance of Wet FGD Coordinated Particulate Matter Control for Ultra-Low Pollutants Emission

The test results of the particulate matters after flue gas desulphurization are analyzed for some ultra-low pollutants emission power plants. It is discovered that the performances of wet FGD coordinated particulate matter controls vary quite significantly. The particle removal efficiency of non-empty tower with efficient demister such as bundle and roof types, are substantially higher than the empty tower with common demisters. The test results show that the performance of collaborative particulate matter controls is greatly affected by the performance of demisters and the components with gas-liquid mass transfer enhancement. Using the wet FGD can achieve effective collaborative control of particulate matters.