Dissolution Behavior of Steam Generator Deposit in EDTA Solution

Song Lijun; Xiao Yan; Sun Yun; Tian Zhaohui; Liu Canshuai; Zou Wei

doi:10.13832/j.jnpe.2024.04.0228

Volume 45 Issue 4

Aug. 2024

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Song Lijun, Xiao Yan, Sun Yun, Tian Zhaohui, Liu Canshuai, Zou Wei. Dissolution Behavior of Steam Generator Deposit in EDTA Solution[J]. Nuclear Power Engineering, 2024, 45(4): 228-234. doi: 10.13832/j.jnpe.2024.04.0228

Citation:

Song Lijun, Xiao Yan, Sun Yun, Tian Zhaohui, Liu Canshuai, Zou Wei. Dissolution Behavior of Steam Generator Deposit in EDTA Solution[J]. Nuclear Power Engineering, 2024, 45(4): 228-234. doi: 10.13832/j.jnpe.2024.04.0228

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Dissolution Behavior of Steam Generator Deposit in EDTA Solution

doi: 10.13832/j.jnpe.2024.04.0228

Song Lijun^{1, 2
,},
Xiao Yan^{1, 2},
Sun Yun^{1, 2},
Tian Zhaohui^{1, 2},
Liu Canshuai^{1, 2},
Zou Wei^{1, 2}

1.
Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou, Jiangsu, 215004, China
2.
National Engineering Research Center for Nuclear Power Plant Safety & Reliability, Suzhou, Jiangsu, 215004, China

Received Date: 2023-08-28
Rev Recd Date: 2023-09-21
Publish Date: 2024-08-12

Abstract

Abstract

In order to explore the solubility of chemical cleaning agent EDTA on simulated deposit Fe₃O₄ and steam generator sludge, and to guide the selection of chemical cleaning processes, XRF and ICP-OES were used to analyze the dissolution effects of solution temperature, EDTA concentration, and dissolution time on simulated deposit Fe₃O₄ and SG sludge. The chemically modified electrode was prepared by Fe₃O₄, and the cyclic voltammetry test and AC impedance test of the modified electrode were carried out by using a three-electrode system. The results indicate that the higher the solution temperature, the higher the EDTA concentration, and the stronger the solubility of Fe₃O₄. The longer the dissolution time, the higher the dissolution rate of Fe₃O₄ and SG sludge. Due to the differences between SG sludge and Fe₃O₄, EDTA solution has a weaker ability to dissolve SG sludge than Fe₃O₄. The electrochemical reaction process of Fe₃O₄ modified electrode in EDTA solution is diffusion-controlled process.
- Steam generator (SG),
- Fe₃O₄,
- Sludge,
- Chemically modified electrode,
- EDTA

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References(25)

References

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