Leixing Tao1, Yanyan Wang1, Chunmei Yue1, Zhigang Shen2, Zhichao Liu2, Qizhen Liu3, Junchao Lu1, Jian Wang1, Honglei Ding This email address is being protected from spambots. You need JavaScript enabled to view it.4, Weiguo Pan This email address is being protected from spambots. You need JavaScript enabled to view it.4

1 Shanghai Minghua Power Science & Technology Co., Ltd., Shanghai 200090, China
Shanghai ChuangLan Testing Technology Co., Ltd., Shanghai 200233, China
Shanghai Environmental Monitoring Centre, Shanghai 200235, China
4 Shanghai University of Electric Power, Shanghai 200090, China


Received: February 28, 2020
Revised: May 13, 2020
Accepted: May 13, 2020
Download Citation: ||https://doi.org/10.4209/aaqr.2020.01.0004 

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Cite this article:

Tao, L., Wang, Y., Yue, C., Shen, Z., Liu, Z., Liu, Q., Lu, J., Ding, H. and Pan, W. (2020). Synergistic Emission Reduction of Particulate Pollutants in Coal-fired Power Plants Using Ultra-low Emission Technology. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2020.01.0004


HIGHLIGHTS

  • Three typical coal-fired units in Shanghai were selected to be tested.
  • PM2.5 comprehensive removal rate can reach 99.689%–99.878%.
  • CPM is simultaneously reduced while FPM is reduced greatly.
 

ABSTRACT


Total particulate matter (TPM) is a crucial indicator for evaluating flue gas emissions from coal-fired units. TPM contains solid and liquid contaminants and condensable particulate matter (CPM), which is mainly composed of sulfate and various anions, cations, and metal ions. Three large-capacity coal-fired units in Shanghai were selected as research objects, and the emission of PM2.5, SO3, and CPM in the power generation process was monitored. The results showed that comprehensive removal rates of 99.689%–99.878% and 86.99%–92.92% can be achieved for PM2.5 and SO3, with emission concentrations of approximately 0.99–1.79 and 1.91–2.50 mg·m-3, respectively. Compared with the traditional flue gas process, PM2.5 and SO3 levels decreased considerably in ultra-low emission units. A considerable decrease in the filterable particulate matter (FPM) results in a simultaneous decrease in CPM. The emission concentration of FPM decreased by 76% and the FPM/CPM ratio changed from 1:1 to 1:2 in the ultra-low-emission units. The average measurement concentration of TPM (the sum of CPM and FPM) was 7.36 ± 3.56 mg·m-3, and a reduction rate of 82% was achieved. The TPM emission values obtained from the experiments are representative and can provide basic data for environmental assessment and local environmental policy formulation.


Keywords: Ultra-low emission; Total particulate matter; Condensable particulate matter; PM2.5; SO3.



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