Study on Performance of Deactivated and Regenerated Catalysts for Coal-Fired Power Plant SCR Denitration

doi:10.11930/j.issn.1004-9649.2014.4.139.4

Electric Power ›› 2014, Vol. 47 ›› Issue (4): 139-143.DOI: 10.11930/j.issn.1004-9649.2014.4.139.4

• Orginal Article • Previous Articles Next Articles

Study on Performance of Deactivated and Regenerated Catalysts for Coal-Fired Power Plant SCR Denitration

LIU Hong-hui, LIU Wei, HUANG Rui, YUAN Peng, XI Wen-chang, HUANG Xin-zhu, WANG Gang

Chongqing Yuanda Catalyst Manufacturing Co. Ltd., Chongqing 401336, China

Received:2013-11-10 Online:2015-12-22 Published:2014-04-30
Supported by:
This work is supported by National High Technology Research and Development Program of China(863 Program 2010AA065001), Key Technology Projects of China Power Investment Corporation(2013-126-CQD-KJ-X), Integrated Demonstration Projects of Chongqing(CSTC2013JCSF20001)

Abstract

Abstract: The activity and SO₂/SO₃ conversion rate of catalyst units are tested for the fresh, deactivated and regenerated SCR catalysts used in a thermal power plant by means of XRF, ICP, SEM-EDX, BET, Mercury Porosimeter and XRD. The test results show that the activity of used catalysts greatly decreases (from 41.5 m/h to 29.5 m/h). The causes of deactivation are analyzed and the catalyst regeneration process is designed. Compared with the fresh SCR catalysts, the activity of regenerated catalysts can be recovered to 99% of that of the fresh ones (from 29.5 m/h up to 41.1 m/h), the SO₂/SO₃ conversion rate is well controlled, and the microstructure and properties are basically the same.

Key words: coal-fired power plant, SCR catalyst, deactivation, regeneration

CLC Number:

X506

LIU Hong-hui, LIU Wei, HUANG Rui, YUAN Peng, XI Wen-chang, HUANG Xin-zhu, WANG Gang. Study on Performance of Deactivated and Regenerated Catalysts for Coal-Fired Power Plant SCR Denitration[J]. Electric Power, 2014, 47(4): 139-143.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.4.139.4

https://www.electricpower.com.cn/EN/Y2014/V47/I4/139

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Study on Performance of Deactivated and Regenerated Catalysts for Coal-Fired Power Plant SCR Denitration

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