CARR二回路冷却系统碳钢管道的腐蚀与防护
Corrosion and Protection of Carbon Steel Pipe in Cooling System of CARR Secondary Loop
-
摘要: 针对中国先进研究堆(CARR)的特殊性,以静态挂片实验与动态模拟实验相结合,采用挂片失重的方法计算腐蚀速率,着重从Cl-、SO2-4、Mg2+和Ca2+浓缩比,pH值,缓蚀阻垢剂浓度等方面开展了碳钢腐蚀影响因素的分析与研究。结果表明,在CARR二回路中,Cl-、SO2-4、Mg2+和Ca2+的浓缩比为2~3,pH值为8.0~8.5,缓释阻垢剂LJ-301的浓度为0.12 g/L左右的水质为最佳状态,经24 h浸泡或循环水冲击下,20#碳钢的防腐效果明显。Abstract: According to the characteristics of CARR, the weight loss measurement was used to calculate the corrosion rate. This method combined the static test and dynamic simulation associated with the analysis of the factors for carbon steel corrosion, and the ion concentration ratios of Cl-, SO2-4, Mg2+ and Ca2+ and the pH value as well as the content of corrosion inhibitor LJ-301 were mainly studied. The results show that in the secondary loop of CARR, the water quality is at the best state when Cl-, SO2-4, Mg2+ and Ca2+ concentration ratios are 2.3, pH value range is 8.0-8.5, and the concentration of corrosion inhibitor LJ-301 is about 0.12 g/L. The anti-corrosion effect of 20# carbon steel is obvious after 24 hours soak or water impingement.
-
Keywords:
- CARR ,
- secondary loop ,
- corrosion rule ,
- protective measure
-
-
[1] 云桂春. 压水反应堆水化学[M]. 哈尔滨:哈尔滨工程大学出版社,2009:57-58. [2] ASAMI K, KIKUCHI M. In-depth distribution of rusts on aplain carbon steel and weathering steels exposed to coastal-industrial atmosphere for 17 years[J]. Corros Sci, 2003, 45: 2671-2676. [3] OH S J, COOK D C, TOWNSEND H E. Atmospheric corrosion of different steels in marine rural and industrial environments[J]. Corros Sci, 1999, 41: 1687-1691. [4] 安洋,徐强,吴子涛,等. 模拟循环冷却水中几种离子对碳钢腐蚀的影响[J]. 电镀与精饰,2011,33(4):35-39.AN Yang, XU Qiang, WU Zitao, et al. The influence of several important ions in circulating cooling water on corrosion of carbon steel[J]. Plating and Finishing, 2011, 33(4): 35-39(in Chinese). [5] 杨秀忠. 低温水系统腐蚀问题处理过程及对策[J]. 金山油化纤,2000(2):44-46. [6] 马欣. 金属在含氯离子水介质中的腐蚀行为[J]. 石油化工腐蚀与防护,2005,22(5):5-7.MA Xin. Corrosion behavior of metals in water containing chlorine ions[J]. Corrosion & Protection in Petrochemical Industry, 2005, 22(5): 5-7(in Chinese). [7] 田先勇. 20#低碳钢腐蚀因素分析[J]. 科学技术与工程,2012,12(16):3959-3961.TIAN Xianyong. Corrosion factors analysis on 20# low carbon steel[J]. Science Technology and Engineering, 2012, 12(16): 3959-3961(in Chinese). [8] 吴晓光,段国华,李慧玲. JB/T 7901—1999金属材料实验室均匀腐蚀全浸试验方法[S]. 北京:国家机械工业局,1999. [9] 胡家元,曹顺安,谢建丽. 锈层对海水淡化一级反渗透产水中碳钢腐蚀行为的影响[J]. 物理化学学报,2012,28(5):1153-1162.HU Jiayuan, CAO Shun’an, XIE Jianli. Effect of rust layer on the corrosion behavior of carbon steel in reverse osmosis product water[J]. Acta Physico-Chimica Sinica, 2012, 28(5): 1153-1162(in Chinese). [10] 纪芳田,包义华. 循环冷却水处理基础知识[M]. 北京:化学工业出版社,1986:76-78. [11] 杨淑琴. 循环冷却水pH值的控制[J]. 浙江冶金,2005(2):57-58. [12] 金熙,项成林,齐冬子. 工业水处理技术问答[M]. 4版. 北京:化学工业出版社,2010:297-298.
计量
- 文章访问数: 259
- HTML全文浏览量: 0
- PDF下载量: 1064