Dept. of Environmental Engineering, Yonsei University, Wonju, 220-710, Republic of Korea.
R&D Center, J-E Tech Co., Ltd., Seoul, 153-813, Republic of Korea.
Environ Pollut. 2018 Jun;237:531-540. doi: 10.1016/j.envpol.2018.02.080. Epub 2018 Mar 15.
The hybrid filter (HF) was newly designed and operated with powder activated carbon (PAC) injection to capture mercury and fine particulate matter in the coal power plant. With PAC injection in HF operation, the capture efficiency of elemental mercury was clearly enhanced. When the injection rate of PAC increased from 0 to 20 mg/m, the speciation fraction of elemental mercury significantly decreased from 85.19% to 3.76% at the inlet of the hybrid filter. The speciation fraction of oxidized mercury did not vary greatly, whereas the particulate mercury increased from 1.31% to 94.04%. It was clearly observed that the HF played a role in the capture of mercury and fine PM by leading the conversion of elemental mercury as particulate mercury and the growth of PM via electrode discharge in the HF operation with PAC injection.
混合滤池（HF）采用粉末活性炭（PAC）注入法进行了全新设计和运行，以捕获火力发电厂中的汞和细颗粒物。在 HF 运行中注入 PAC，元素汞的捕集效率明显提高。当 PAC 的注入速率从 0 增加到 20mg/m 时，混合滤池入口处元素汞的形态分数从 85.19%显著下降到 3.76%。氧化汞的形态分数变化不大，而颗粒汞从 1.31%增加到 94.04%。显然，HF 通过在 PAC 注入的 HF 运行中通过电极放电导致元素汞转化为颗粒汞以及 PM 的增长，从而在汞和细 PM 的捕集方面发挥了作用。
