Analysis of Performance for SCR Deactivated Catalyst before and after Regeneration

doi:10.11930/j.issn.1004-9649.201711088

Abstract

Abstract: In order to systematically study the performance of deactivated SCR catalyst for coal-fired power plant before and after regeneration, the microscopic characteristics of deactivated catalyst for a 330MW coal-fired unit are analyzed. The testing results show that after regeneration the active components of the catalyst after regeneration are effectively supplemented, and the catalyst activity is greatly improved. During the regeneration process, the sulfate salt deposition on the catalyst surface is eliminated and the weak acid and the strong acidity sites of the catalyst surface are enhanced, while the anatase phase of the catalyst is well maintained, and the microstructure of the catalyst is restored to a relaxed and even state. This proves that the catalyst regeneration method in terms of adding active ingredients and eliminating deposited salt can prolong the service life of the catalyst, and reduce the production cost of the power plant.

Key words: coal-fired power plant, SCR denitrification, deactivated catalyst, regeneration, micro-characteristics

CLC Number:

X511
TM621.9

DU Zhen, WU Bo, YAN Min, ZHANG Yang, ZHU Yue. Analysis of Performance for SCR Deactivated Catalyst before and after Regeneration[J]. Electric Power, 2018, 51(10): 130-133,138.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201711088

https://www.electricpower.com.cn/EN/Y2018/V51/I10/130

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