Influences of NO on mercury adsorption characteristics for HBr modified fly ash
Influences of NO on mercury adsorption characteristics for HBr modified fly ash
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DOI：
10.1016/j.coal.2016.10.002
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发表时间：
2017-02
影响因子：
5.6
通讯作者：
Yongsheng Zhang;Lili Zhao;R. Guo;Jiawei Wang;Yan Cao;W. Orndorff;W. Pan
中科院分区：
文献类型：
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作者：
Yongsheng Zhang;Lili Zhao;R. Guo;Jiawei Wang;Yan Cao;W. Orndorff;W. Pan
将废飞灰用于汞捕获应用是发电厂的一个有吸引力的低成本选择。采用连续监测法和热分解法研究了一氧化氮（NO）对HBr改性粉煤灰吸附汞特性的影响。结果表明，在烟气中添加NO后，HBr改性粉煤灰对汞的吸附效率显著提高。此外，随着NO含量的增加，烟气中汞浓度的变化速率也随之增大。在旋流反应器中，HBr改性粉煤灰吸附的汞主要以HgBr2和HgO两种形式存在。在混流式反应器上进行的HBr改性粉煤灰吸附汞的实验中，NO主要促进了HgBr2的生成。
Using waste fly ash for mercury capture applications is an attractive, low-cost option for power plants. In this paper, the influence of nitric oxide (NO) on the mercury adsorption characteristics of HBr modified fly ash in an entrained-flow reactor was investigated using continuous monitoring and thermal decomposition methods. The results show that the adsorption efficiency of mercury by HBr modified fly ash was significantly enhanced when NO was added to the flue gas. Additionally, the rate of change of mercury concentration in the flue gas was increased due to increasing NO. The mercury adsorbed by HBr modified fly ash, in the entrained-flow reactor, exists primarily in two forms, HgBr2and HgO. In the experiments of mercury adsorption with HBr modified fly ash on the entrained-flow reactor, NO mainly augmented the generation of HgBr2.