Influence of Air Pollution Control Devices on the Polycyclic Aromatic Hydrocarbon Distribution in Flue Gas from an Ultralow-Emission Coal-Fired Power Plant
Influence of Air Pollution Control Devices on the Polycyclic Aromatic Hydrocarbon Distribution in Flue Gas from an Ultralow-Emission Coal-Fired Power Plant
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DOI：
10.1021/acs.energyfuels.6b01381
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发表时间：
2016-10
期刊：
影响因子：
5.3
通讯作者：
Jingwei Li;Xiaodong Li;Min Li;Shengyong Lu;Jian-hua Yan;Xie Wei-yang;Li Chunhong;Zhifu Qi
中科院分区：
文献类型：
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作者：
Jingwei Li;Xiaodong Li;Min Li;Shengyong Lu;Jian-hua Yan;Xie Wei-yang;Li Chunhong;Zhifu Qi
众所周知，燃煤电厂会释放大量的多环芳烃（PAHs）和颗粒物。部分电厂已升级烟气净化设备，实现超低排放。以某超低排放燃煤机组为研究对象，考察了烟气净化设备对烟气中多环芳烃分布的影响。湿法烟气脱硫系统入口处16种多环芳烃的总浓度为6.340 μg/m3，萘（Nap）是主要的多环芳烃化合物。电除尘器出口16种多环芳烃的总浓度为0.870 μg/m3，主要为5环和6环多环芳烃。WFGD系统可以部分降低烟气中多环芳烃的浓度。WESP去除了大部分Nap和部分气相PAHs，而颗粒相中部分5环和6环PAHs的浓度随着烟气通过WESP而增加。
Coal-fired power plants are known to release a large quantity of polycyclic aromatic hydrocarbons (PAHs) and particulate matter. Some power plants have been upgraded with flue gas purification equipment to achieve ultralow emission. A coal-fired unit with ultralow emission was selected to investigate the influence of gas purification equipment on the PAH distribution in flue gas. The total concentration of the 16 PAHs at the inlet of the wet flue gas desulfurization (WFGD) system was 6.340 μg/m3, and naphthalene (Nap) was shown to be the major PAH compound. The total concentration of the 16 PAHs at the outlet of the wet electrostatic precipitator (WESP) was 0.870 μg/m3, and the 5-ring and 6-ring PAHs were the major PAH compounds. The WFGD system could partially reduce the concentration of PAHs in the flue gas. The WESP eliminated most of the Nap and a portion of the gas-phase PAHs, whereas the concentrations of some 5-ring and 6-ring PAHs in the particulate phase increased as the flue gas passed through t...