Effect of SCR Catalyst Activity Evaluation on Ultra Low Emission of NOx

doi:10.11930/j.issn.1004-9649.2017.08.163.05

Abstract

Abstract: The catalyst is the key material in SCR denitrification technology, which plays the indispensable role to realize NO_x ultra-low emission. However, depending on the practical operation conditions and the coal quality, the attenuation law of the catalyst activity will deviate from the theoretical curve. In this paper, the chemical lifetime of the catalyst is predicted by applying a mathematical model. In combination with the actual cases, the efficiency of catalyst layers and the selection of the catalyst are studied. The results show that in the ultra-low emission modifications, the catalyst activity evaluation is very critical to the selection of the catalyst. It may affect the stable operation of the equipment and the cost of the investment.

Key words: SCR, ultra-low emission, catalyst, activity evaluation, molar ratio of ammonia to nitrogen, chemical lifetime

CLC Number:

X701
TM621

LI Shuaiying, WU Baohui, YAO Hao, NIU Guoping, WANG Xiaobing, HUANG Gangying, ZHANG Lide, LU Xiaofeng, LIU Yi. Effect of SCR Catalyst Activity Evaluation on Ultra Low Emission of NO_x[J]. Electric Power, 2017, 50(8): 163-167.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.08.163.05

https://www.electricpower.com.cn/EN/Y2017/V50/I8/163

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Effect of SCR Catalyst Activity Evaluation on Ultra Low Emission of NO_x

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