海水淡化水缓蚀剂的研究及应用

对比了7种缓蚀剂在低碱、低硬、高氯离子的海水淡化水中对碳钢、黄铜、不锈钢的缓蚀性能。结果表明:80 mg/L的TS-528G在海水淡化水中对碳钢、黄铜、不锈钢有良好的缓蚀效果,运行20 d碳钢的腐蚀率为0.027mm/a,黄铜的腐蚀率为0.002 2 mm/a,不锈钢的腐蚀率为0.002 5 mm/a。将TS-528G应用于天津大港某化工厂循环冷却水系统,运行7个月碳钢的腐蚀率<0.05 mm/a,黄铜、不锈钢的腐蚀率<0.004 mm/a。

Research on corrosion inhibitor in desalination water and its application

The corrosion inhibition effects of seven kinds of corrosion inhibitors in desalinated seawater,under the following conditions: low-alkalinity,low hardness,and high chlorine ions,on carbon steel,brass and stainless steel have been contrasted.The results show that 80 mg/L of TS-528G in desalinated seawater has petty good corrosion inhibition effect on carbon steel,brass,and stainless steel.Running for 20 d,the corrosion rate of carbon steel is 0.027 mm/a,that of brass 0.002 2 mm/a,and that of stainless steel 0.002 5 mm/a.TS-528G has been used for the circulating cooling water system at a chemical plant in Dagang,Tianjin.After running for 7 months,the corrosion rate of carbon steel is <0.05 mm/a,those of brass and stainless steel are <0.004 mm/a.