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Volume 7, Issue 3, June 2018, Page: 27-32
The Effects of Flue Gas SO3 on the Operation of Coal-Fired Units and Countermeasures
Hu Yufeng, State Key Laboratory of Clean and Efficient Coal-Fired Power Generation and Pollution Control, Guodian Science and Technology Research Institute, Nanjing, China
Xue Jianming, State Key Laboratory of Clean and Efficient Coal-Fired Power Generation and Pollution Control, Guodian Science and Technology Research Institute, Nanjing, China
Received: Apr. 24, 2018;       Accepted: May 14, 2018;       Published: Jun. 1, 2018
DOI: 10.11648/j.ijepe.20180703.11      View  1979      Downloads  171
There exists a certain amount of SO3 in flue gas discharged from coal-fired power plants. The implementation and “ultra-low emission” retrofitting of SCR in China greatly increased the concentration of SO3 in flue gas, which will lead to fouling, erosion and plugging of the SCR reactor and the air preheater downstream. With the lowered dew point of the flue gas, the ammonia sliped from the SCR reactor together with the SO3 in flue gas will leads to dust accumulation in the Electric Precipitator or in the Bag-house Filter, too. In this study, the main effects and its mechanism of SO3 on the safety, stability and efficiency of units were analyzed, and measures to control SO3 were proposed.
Coal-Fired Flue Gas, SO3, Operation of Units, Control of SO3
To cite this article
Hu Yufeng, Xue Jianming, The Effects of Flue Gas SO3 on the Operation of Coal-Fired Units and Countermeasures, International Journal of Energy and Power Engineering. Vol. 7, No. 3, 2018, pp. 27-32. doi: 10.11648/j.ijepe.20180703.11
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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