Fouling on the secondary side of nuclear steam generator tube: experimental and simulated study
Fouling on the secondary side of nuclear steam generator tube: experimental and simulated study
复制标题
核蒸汽发生器二次侧管道结垢的实验与模拟研究
DOI：
10.1016/j.apsusc.2022.153143
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发表时间：
2022-03
影响因子：
6.7
通讯作者：
Dongbai SUN
中科院分区：
文献类型：
--
作者：
Lu REN;Shicheng WANG;Jian XU;Tong ZHANG;Qi GUO;Dongyang ZHANG;Jiajia SI;Xiaohui ZHANG;Hongying YU;Tetsuo SHOJI;Dongbai SUN
通过实验和仿真研究了蒸汽发生器污垢的形成。•在大颗粒沉积中首次发现了双层结构。•氧化层会影响污垢颗粒的分布。•通过污垢沉积，氧化物的性质得到了改善。压水堆（PWR）核电站二次回路中，由于浓稠氧化物的生长和可溶颗粒的沉积，导致蒸汽发生器（SG）内结垢，严重影响了SG管的内部完整性、传热效率和水化学控制。本文描述了含不同金属阳离子的污垢的成核、聚集和生长机理。在SG管的缝隙处观察到三层结垢，其中较大的fe3o结垢颗粒呈双层结构。发现污垢颗粒的生长过程和方向与氧化层有关。同时，结垢过程受基体形状和大块结垢颗粒分布的影响，较大的结垢颗粒在氧化层表面优先向原生晶面方向生长。研究发现，污垢沉积对氧化物的成核、团聚、吸附和生长有显著影响，但对SG管的可靠性可能有相反的影响。
• Formation of steam generator fouling was investigated by experiment and simulation. • A double layer structure was firstly found in the large deposited fouling particles. • Distribution of fouling particles could be influenced by oxide layer. • The nature of the oxide was verified to be modified by fouling deposition. The fouling in the steam generator (SG), seriously affecting the internal integrity of SG tube, heat transfer efficiency and control of water chemistry, is commonly caused by the growth of thick oxides and deposition of soluble particles in the secondary circuit of pressure water reactor (PWR) nuclear power plant (NPP). Herein we describe the nucleation, aggregation and growth mechanism of fouling containing different metallic cations. Three fouling layers were observed at the crevice position of SG tube and the large Fe 3 O 4 fouling particles exhibited a double layer structure. The growth process and direction of fouling particles were found to be related with the oxide layer. Meanwhile, the deposition process of fouling is affected by the matrix shape and distribution of the massive fouling particles, and large fouling particle grows preferentially in the direction of primary crystal plane on the surface of the oxide layer. The nucleation, agglomeration, adsorption, growth of the oxide was identified to be affected significantly by fouling deposition, however, it exhibited possibly opposing impacts on the reliability of SG tubes.
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影响因子：
3.2
作者：
T. Jack
通讯作者：
T. Jack
影响因子：
8.3
作者：
Zihao Wang;Y. Takeda
通讯作者：
Zihao Wang;Y. Takeda
影响因子：
3.7
作者：
Kiejna, Adam;Ossowski, Tomasz;Pabisiak, Tomasz
通讯作者：
Pabisiak, Tomasz
影响因子：
8.3
作者：
F. Scenini;G. Palumbo;N. Stevens;A. Cook;A. Banks
通讯作者：
F. Scenini;G. Palumbo;N. Stevens;A. Cook;A. Banks
影响因子：
3.3
作者：
Lu Ren;Jian Xu;W. Jia;Hongying Yu;T. Shoji;Tong-Yi Zhang;Ning Li;Dong-Yang Zhang;Dong-bai Su
通讯作者：
Lu Ren;Jian Xu;W. Jia;Hongying Yu;T. Shoji;Tong-Yi Zhang;Ning Li;Dong-Yang Zhang;Dong-bai Su