Details

Autor(en) / Beteiligte

• Yongzheng GU
• Shuzhou WEI

Titel

Synergistic emission reduction and distribution characteristics of heavy metals for ultra-low emission coal-fired power plants

Ist Teil von

• Méitàn xuébào, 2023-08, Vol.48 (8), p.3252-3262

Ort / Verlag

Editorial Office of Journal of China Coal Society

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Heavy metals pollutants (As, Pb, Se and Cr) emitted from coal combustion has caused widespread concern. In order to study the emission and distribution characteristics of heavy metals from ultra-low emission coal-fired power plant, the Method 29 of the United States Environmental Protection Agency (EPA) and total suspended particulate (TSP) sampling system were used to conduct parallel isokinetic sampling analysis for the gaseous and particulate heavy metals at multiple points on a 350 MW coal-fired power unit equipped with selective catalytic reduction (SCR), low-temperature economizer-electrostatic precipitator (LLT-ESP), wet flue gas desulfurization (WFGD), and wet electrostatic precipitator (WESP). The enrichment, migration, distribution, and synergistic control characteristics of heavy metals in different forms in flue gas were investigated. The results show that the relative enrichment factors of four heavy metals (As, Pb, Se and Cr) in fly ash were obviously higher than that of bottom ash, in which the