The Industrial Application and Technical Optimization of First Domestically-Made Urea Hydrolysis Unit in Large Power Plants

doi:10.11930/j.issn.1004-9649.2014.7.150.5

Abstract

Abstract: With the promulgation of the national standard of Emission Standard of Air Pollutants for Thermal Power Plants(GB 13223-2011), the selective catalytic reduction (SCR) flue gas denitrification devices shall be built in a large number of coal-fired generating units, Ammonia will be gradually replaced by urea for safety. In the past, the urea hydrolysis technology is mainly dependent on importation. The domestically-manufactured urea hydrolysis devices can reduce the operating costs and avoid the dependence on the imported technology. In this paper, the characteristics, operating results and key technical optimization of the first set of domestically-made ammonia preparation system for two 330-MW units in Dongsheng Power Plant with urea for denitrification are introduced. The operating practice shows that the reliability of the system is quite good; the overall system operation is stable and can meet the design requirement of load following. The project can be a reference for the design, installation and debugging of the flue gas denitrification systems of the same kind.

Key words: flue gas denitrification, selective catalytic reduction (SCR), hydrolysis of urea, localization

CLC Number:

TM621.7

HUI Run-tang, WEI Fei, YAN Shi-ping, LIU Shu-dong, YANG Ai-yong, JIANG Yan-liang, ZHENG Wei. The Industrial Application and Technical Optimization of First Domestically-Made Urea Hydrolysis Unit in Large Power Plants[J]. Electric Power, 2014, 47(7): 150-155.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.7.150.5

https://www.electricpower.com.cn/EN/Y2014/V47/I7/150

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