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

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


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.  20: 2529–2535. 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


The total particulate matter (TPM) is a crucial indicator when 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. This study selected three typical large-capacity coal-fired power plants in Shanghai retrofitted with ultra-low emission technology and monitored their emissions of PM2.5, SO3, and CPM during power generation. The results showed that the plants achieved comprehensive removal rates of 99.689–99.878% and 86.99–92.92% for PM2.5 and SO3, resulting in emitted concentrations of approximately 0.99–1.79 and 1.91–2.50 mg m–3, respectively, which are considerably lower than those associated with the traditional flue gas process. Additionally, a significant decrease in the emitted filterable particulate matter (FPM) caused a simultaneous decrease in CPM. After being equipped with the ultra-low emission technology, the units displayed a 76% reduction in the emitted FPM concentration and a smaller FPM/CPM ratio (1:2 vs. 1:1). The emitted TPM (the sum of CPM and FPM) was reduced by 82%, with an average measured concentration of 7.36 ± 3.56 mg m–3. The values we obtained are representative and provide basic data for environmental assessment and local environmental policy formulation.


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



Aerosol Air Qual. Res. 20 :2529 -2535 . https://doi.org/10.4209/aaqr.2020.01.0004  


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