Liao Yujie, Zhong Zhong, Cui Shaoping, Fu Dong, Zhang Pan
Hebei Provincial Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, P. R. China.
ACS Omega. 2021 Feb 11;6(7):4899-4906. doi: 10.1021/acsomega.0c05859. eCollection 2021 Feb 23.
In this work, we prepared CuCe/Ti catalysts in a dielectric barrier discharge (DBD) reactor and proposed a new method for flue gas mercury oxidation using DBD coupling CuCe/Ti catalyst. Our experiments verified the oxidation efficiency of flue gas Hg (η) and clarified the influence of O content, NO concentration, SO concentration, water vapor content, and discharge voltage on η. The oxidation mechanism of Hg in the DBD-CuCe/Ti reactor was also illustrated. The Hg oxidation experiment on the simulated flue gas (70 μg/m Hg + 300 mg/m NO + 1000 mg/m SO + 6%O) with a flow rate of 1 L/min showed that when the amount of catalyst was 1.25 g and the discharge voltage was 9.5 kV, a η of 93% can be achieved, which indicates that the DBD coupling CuCe/Ti technology is suitable for Hg conversion and flue gas mercury removal.
在本工作中，我们在介质阻挡放电（DBD）反应器中制备了CuCe/Ti催化剂，并提出了一种利用DBD耦合CuCe/Ti催化剂进行烟气汞氧化的新方法。我们的实验验证了烟气汞的氧化效率（η），并阐明了O含量、NO浓度、SO浓度、水蒸气含量和放电电压对η的影响。还阐述了DBD-CuCe/Ti反应器中汞的氧化机理。对流速为1 L/min的模拟烟气（70 μg/m³ Hg + 300 mg/m³ NO + 1000 mg/m³ SO₂ + 6%O₂）进行的汞氧化实验表明，当催化剂用量为1.25 g且放电电压为9.5 kV时，可实现93%的η，这表明DBD耦合CuCe/Ti技术适用于汞转化和烟气脱汞。
