期刊
FUEL
卷 309, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2021.122361
关键词
Heterogeneous agglomeration; Trace elements; Particulate matter; Synergistic removal; Flue gas
资金
- National Key R&D Program of China [2018YFB0605104]
- National Natural Science Foundation of China [42030807]
- Hubei Province Key RD Program [2020BCA076]
- Program for HUST Academic Frontier Youth Team [2018QYTD05]
The study examines the effect of heterogeneous agglomeration technology on the migration and emission of three trace elements (arsenic, selenium, and lead) in the tail flue gas of a domestic coal-fired power plant. The results demonstrate the efficient attachment of gaseous harmful trace elements to particulate matter, leading to significant reductions in their concentrations.
For a domestic 350 MW coal-fired power plant, the effect of heterogeneous agglomeration technology on the migration and emission of three trace elements of arsenic, selenium and lead in tail flue gas was studied. The results show that heterogeneous agglomeration technology can promote the attachment of gaseous harmful trace elements to particulate matter effectively. The reduction rates of gaseous As, Se and Pb concentrations at the ESP outlet were 24.10%, 61.08%, and 70.38%, respectively. Under the synergistic effect of ESP, more As, Se, and Pb are enriched in fly ash, and the concentration of As, Se, and Pb in fine particles below 10 mu m at the ESP outlet is reduced by 54.48%, 56.47%, and 75.17%, respectively. In addition, after spraying the agglomerating agent, the final As, Se, and Pb concentrations in the atmosphere were 1.29 mu g/m(3), 2.01 mu g/m(3), and 1.12 mu g/m(3), which were far lower than those of the relevant EPA emission limits.
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