Effects of APCDs on PM emission-A case study of a 660 MW coal-fired unit with ultralow pollutants emission
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Effects of APCDs on PM emission-A case study of a 660 MW coal-fired unit with ultralow pollutants emission
- 发表刊物：
- Applied thermal engineering
- 摘要：
- A 660 MW unit of a CFPP (coal-fired power plant) with ultralow pollutants emission was chosen for field experiment. The PM (particulate matter) was sampled by DLPI (Dekati low pressure impactor) at the inlet/outlet of
APCDs (air pollution control devices). The removal efficiencies of PM1, PM2.5, PM10 and the concentrations of
WSIs (water-soluble ions) in PM from different APCDs were obtained. The experimental results show that SCR
can increase the mass concentration of PM1 by 52.11%. The concentrations of water-soluble Na+, NH4+, Cl−,
and SO42− in PM1 also increase. LLTe (low-low temperature economizer) can improve the PM removal efficiency
of ESP (electrostatic precipitator), especially for particles in the size range of 0.1–1 μm. The removal efficiency of
water-soluble Na+, NH4+, Mg2+, Ca2+, Cl−, SO42− and NO3− are all above 86% for ESP. WFGD (wet flue gas
desulfurization) can remove SO2 and fly ash simultaneously, but will increase the mass concentration of PM1 by
59.41%. The desulfurization slurry is rich in Mg2+, Cl− and SO42− which is richest in PM10 after WFGD. WESP
(wet electrostatic precipitator) can further purify flue gas with high humidity and low dust concentration.
Through ultralow emission retrofit, the final PM10 emission of the 660 MW unit is 2.04 mg/Nm3.
- 合写作者：
- Renhui Ruan,Hexin Liu,Houzhang Tan,Fuxin Yang,Yan Li,Sicong Zhang
- 是否译文：
- 否
- 发表时间：
- 2019-04-06