大型电厂循环水无磷绿色缓蚀阻垢剂的应用

Application of green and phosphorus-free corrosion and scale inhibitors to circulating cooling water systems in power plants

目前国内工业循环冷却水处理大多采用磷系配方,易引起水体富营养化.随着环保要求的不断提高,磷系配方的应用越来越受到限制.凤台发电厂采用绿色无磷方案,使系统在自然pH条件下运行,浓缩倍数3～4倍,且可以减少杀菌灭藻剂的用量.运行结果表明,该方案达到良好的防腐蚀、阻垢和微生物控制效果,同时具有很好的环境效益和经济效益.

At present, industrial circulating cooling water treatment in China mainly uses phosphorus-based formu- la, which may easily cause water eutrophication. With the increasingly strict environment protection requirements, the application of phosphorus-based formula becomes more and more restricted. The green phosphorus-free scheme has been used in Fengtai Power Plant. The system can be operated under natural pH conditions with 3-4 times of concentration multiples and can also reduce the consumption of bactericidal algicide. The operation results indicate that the scheme has achieved good anti-corrosion, anti-scaling and microbial control effect, and also has had obvious environmental and economic benefits.