omparative Analysis on the Performance of High-Content Aluminium De-NOx Catalysts before and after Operation

doi:10.11930/j.issn.10.11930.2015.4.50

Abstract

Abstract: In order to study the impact of excessive Al2O3 added to the catalyst carrier on the catalyst and its performance the appearance, technological characteristics, main chemical components, micro mechanisms, crystal structures and SEM between the fresh and 8 000-h-used high-content aluminum catalyst are compared and analyzed. The results show that after 8 000 hours of operation, the Al2O3 in the catalysts interacts with the SO2 and SO3 in the flue gas and turns to Al2(SO4)3 , which causes not only the catalysts to deform and break down, but also the micro specific surface area to fall off rapidly and the particles of the catalysts to sintering. Consequently, the denitration efficiency drops down sharply. Therefore, high-content aluminium de-NOx catalysts should be avoided being applied in the de-NOx reactors.

Key words: thermal power plant, flue gas de-NOx, selective catalytic reduction, catalyst, high-content aluminium catalyst, Al2O3

CLC Number:

TM621
X511

YAN Min, CHEN Jinsheng, SONG Xiaoning, DU Zhen. omparative Analysis on the Performance of High-Content Aluminium De-NOx Catalysts before and after Operation[J]. Electric Power, 2015, 48(4): 50-53.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.4.50

https://www.electricpower.com.cn/EN/Y2015/V48/I4/50

[1]	LIU Xiwen, PENG Zhuoyin, HU Xinqiang, YE Ze, HE Huixue, CAI Rui, WEI Wenbo. Annual Fuel Cost Minimization Decision Model for Thermal Power Plant and Its Applications [J]. Electric Power, 2022, 55(6): 202-207.
[2]	CHEN Chen, JIA Shuya, LIU Dingjia, JIA Haiwei, ZHANG Ying, QU Yanchao. Research on the Activation Change of Plate-Type Anti-arsenic-poisoning SCR De-NO_x Catalyst in High-Arsenic Flue Gas [J]. Electric Power, 2022, 55(11): 202-208.
[3]	LIU Zhitan, YAO Jie, ZHUANG Ke, YU Lemeng, ZHOU Kai. Comparison of Characteristics of SCR-DeNO_x Catalyst for Gas-Turbine Units and Coal-Fired Units [J]. Electric Power, 2021, 54(6): 145-152.
[4]	YAN Min, ZHANG Yang, GUO Bowen, ZHU Yue. Analysis on the Optimization of SCR Denitrification System Based on Life Cycle Cost [J]. Electric Power, 2021, 54(3): 191-196.
[5]	HUA Chenfei, ZHU Lin, YAO Jie, ZHUANG Ke. Research on the Quality and Characteristics of Carriers for Resource Reuse of Waste Flue Gas Denitration Catalyst [J]. Electric Power, 2021, 54(2): 197-204.
[6]	YANG Yang, HU Dalong, HUANG Qian, XU Zhen, WANG Jing, WU Huoqiang, WANG Bo. Review on Policy and Technology Route of Water Discharge Control in Thermal Power Plant [J]. Electric Power, 2020, 53(8): 131-138.
[7]	DENG Yuqiang, QI Ji, WANG Qiliang, QI Dongdong, SONG Fei, LI Haiyang, CHENG Jiaqing, WANG Dongmei, MA Yanbin. Effects of Lay-up Protective Agent on Water and Steam TOCi During Unit Start-up and Lay-up Processes [J]. Electric Power, 2020, 53(6): 161-165,196.
[8]	YAO Yan, MA Yunlong, YANG Xiaoning, ZHANG Huadong, WANG Lipeng. Deactivation of Honeycomb SCR Catalysts in High-Arsenic Coal-Fired Power Plant [J]. Electric Power, 2020, 53(6): 191-196.
[9]	WANG Muhan, ZHU Lin, ZHANG Jingjie, YANG Fan. Practice of Quality Assurance System of Carbon Dioxide Emission On-Line Monitoring System in the European Union [J]. Electric Power, 2020, 53(3): 154-158,176.
[10]	LI Haoran, XU Yongfeng, MA Xiang. Optimization and Engineering Application toward Energy Saving for Flue Gas Ducts in Large Coal-Fired Power Plants [J]. Electric Power, 2019, 52(7): 123-131.
[11]	MA Dawei, HE Jun, ZHANG Qiliang, HUANG Qishun, ZHANG Benyao, CHENG Jing, ZHU Shuai. Analysis and Research on SCR System Performance and Resistance Increase of Air Preheater in Ultra-Low Emission Unit [J]. Electric Power, 2019, 52(6): 187-192.
[12]	DUAN Xuchen, PENG Daogang, YAO Jun, ZHAO Huirong, XIA Fei. Assessment on the Threat to the Information Security of Power Plant Control System Based on SA-PSO-AHP Method [J]. Electric Power, 2019, 52(5): 29-35.
[13]	YAN Junfu, ZHAO Xuebin. Testing and Numerical Simulation on the Abrasion of SCR Catalysts [J]. Electric Power, 2019, 52(5): 170-175.
[14]	SONG Yubao, ZHAO Peng, YAO Yan, XIE Xinhua, WEI Zhenzu, ZHANG Fajie. Study on the Macro Non-uniform Catalytic De-NO_x Reaction Model for SCR System [J]. Electric Power, 2019, 52(5): 176-184.
[15]	PANG Le, ZHAO Yuzhu, ZHANG Shuai, LI Peng. Study on the Effects of Low Pressure Economizer on Turbine Exhaust Volume [J]. Electric Power, 2019, 52(4): 133-137.

omparative Analysis on the Performance of High-Content Aluminium De-NOx Catalysts before and after Operation

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics