GUO Tingshan, ZHAO Yongfu, LIANG Zhiyuan, et al. Research progress of alkalizing agents in water chemical treatment of secondary circuit in pressurized water reactor nuclear power plants[J]. Thermal power generation, 2021, 50(5): 1-9.
GUO Tingshan, ZHAO Yongfu, LIANG Zhiyuan, et al. Research progress of alkalizing agents in water chemical treatment of secondary circuit in pressurized water reactor nuclear power plants[J]. Thermal power generation, 2021, 50(5): 1-9. DOI: 10.19666/j.rlfd.202008228.
Flow accelerated corrosion(FAC) in the secondary circuit of pressurized water reactor(PWR) nuclear power plant is one of the main causes of pipeline failure
and its water chemical working conditions are directly related to the safety and economy of nuclear power plants. Inorganic amine alkalizers in water chemical treatment are gradually replaced by organic amines. The use of single organic amine and mixed alkalizers can significantly reduce the rate of FAC and prolong the operating life of structural materials. Based on the analysis on research status of single organic amine and mixed alkalizer at home and abroad
this paper points out that
the mixed alkalizer has better performance and lower operating cost than the single organic amine. In view of the thermal stability of the mixed alkalizer
it proposes to use N
N-diethylhydroxylamine(DEHA) and other new oxygen scavengers instead of hydrazine. In addition
the deoxidizer is recommended to be used with the mixed alkalizer together.