摘要：

分析了循环水中引起不锈钢腐蚀的各种因素,论述了氯离子对不锈钢腐蚀的机理和形态,指出引起不锈钢应力腐蚀的临界氯离子浓度受到水质、温度、流速、微生物、水稳剂等各种因素的影响,确定合理的循环水氯离子控制指标应以完善的循环水处理控制方案为前提,在保证生产平稳运行的同时兼顾节水减排。

关键词: 循环水, 氯离子, 不锈钢, 应力腐蚀

Abstract:

The factors that result in the corrosion of stainless steel in circulating water are analyzed.The mechanism and forms of the stainless steel corrosion caused by chloride ions are discussed.It is pointed out that the critical chlorine ion concentration which causes stress etching of stainless steel can be affected by various factors,such as water quality,temperature,flow velocity,bacteria,water treatment agents,etc.In order to formulate reasonable controlling indexes of chloride ions,the premise should be making the circulating water treatment scheme perfect.Attention should also be paid to water saving and emission reduction,at the time of making the production run smoothly.

Key words: circulating water, chloride ions, stainless steel, stress etching

中图分类号: 

• TG172

• TQ085