低温等离子体技术脱除废气中NO和Hg^0研究进展

Research Progress of NO and Hg^0 Removal from Waste Gas by Low Temperature Plasma Technology

针对燃煤电厂中NOx和Hg0排放日益突出的问题,综述了低温等离子体技术脱除废气中NO和Hg0的研究现状,着重阐述了低温等离子体方法耦合催化剂及低温等离子体方法单独脱除NO和Hg^0的性能。结果表明,放电过程产生的·OH、·O、O3等强氧化性粒子可以修饰催化剂使其活性增强,同时活性氧化物对NO和Hg0脱除起到的化学反应作用强于放电过程产生的可见光和紫外线等物理现象的作用。

In view of the increasingly prominent problems of NOx and Hg^0 emissions in coal-fired power plants,the development and research of low-temperature plasma technology for NO reduction and Hg^0 oxidation is summarized.The performance of low temperature plasma method coupling catalyst and low temperature plasma method for NO and Hg^0 removal separately are emphatically expounded,respectively.The results show that the catalyst can be modified by strong oxidizing particles such as·OH,·O,O3 during the discharge process to enhance its activity.At the same time,the chemical reaction of the active oxide on the removal of NO and Hg^0 is stronger than the physical phenomena such as visible light and ultraviolet light.