低温等离子体注入定向Hg氧化实验研究

发布时间：2018-05-28 17:37

本文选题：汞氧化 + Cl自由基注入　；参考：《工程热物理学报》2017年05期

【摘要】：燃煤烟气汞脱除的核心是单质汞(Hg~0)的高效氧化。本文基于低温等离子体技术,系统研究了放电电压、自由基源气体组成、烟气温度及烟气组分对氯自由基(Cl)注入强化氧化Hg~0的影响,结果发现降低注入点烟气温度、增加Cl注入量以及烟气中的NO均有利于Hg~0氧化,最佳放电电压的选取则与自由基源气体组成密切相关,一定条件下,注入极少量C_(12)(19 mg/m~3)即可获得97.9%的Hg~0氧化率。
[Abstract]:The core of mercury removal from coal-fired flue gas is the high-efficiency oxidation of elemental mercury. Based on the low temperature plasma technology, the effects of discharge voltage, free radical gas composition, flue gas temperature and flue gas composition on the enhanced oxidation of Hg~0 by chlorine free radical implantation have been systematically studied. The results show that the flue gas temperature at the injection point is reduced. Increasing the amount of Cl injection and no in flue gas is beneficial to Hg~0 oxidation. The optimal discharge voltage is closely related to the composition of free radical source gas. Under certain conditions, Hg~0 oxidation rate of 97.9% can be obtained by injecting a very small amount of C _ (12) C _ (12) to 19 mg / m ~ (3).
【作者单位】：华中科技大学能源与动力工程学院;
【基金】：国家自然科学基金资助项目(No.51306064) 湖北省自然科学基金资助项目(No.2015CFB242)
【分类号】：X773

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