Abstract:
Taking a chemical plant in Tianjin,as example,the characteristics of using desalted sea water as make-up water of circulating cooling water are introduced.According to the strong corrosiveness of its water quality,some measures,such as using highly efficient corrosion inhibitors and dispersing agents,and adding corrosion inhibitors to water-supply pipe lines,have been adopted.After the project has been put into use,the mass concentration of total iron content in the circulating cooling water treatment system is less than 1 mg/L,the corrosion rates of carbon steel corrosion hanging piece and monitoring tube are both less than 0.075 mm/a,and the deposition rate is less than 15 mcm.It is proved that good antiseptive effect has been obtained by adopting these measures,and,normal operation in production has thus been guaranteed.
摘要：
以天津某化工厂为例,介绍了使用海水淡化水作为循环冷却水补水的特点,并针对其水质的强腐蚀性,采取使用高效缓蚀剂和分散剂,并在供水管道中投加缓蚀剂等措施。方案实施后,该循环冷却水处理系统的总铁质量浓度小于1 mg/L,碳钢挂片和监测管的腐蚀率均小于0.075 mm/a,监测管的沉积速率小于15 mcm。证明采取的措施起到了良好的防腐效果,保证了正常的生产运行。
关键词:
腐蚀性循环冷却水,
缓蚀剂,
海水淡化水
CLC Number: