一种低磷缓蚀阻垢剂TH-682在不同水质中的性能研究

TH-682是-种新型缓蚀阻垢剂，具有含磷低，缓蚀阻垢性能好的特点。对全国五大水域水质，特别是南方水系的超低硬度、腐蚀性较强的水质，TH-682具有良好的缓蚀效果；加药量为60mg／L时，其碳钢腐蚀速率均符合GB50050--2007标准。不同药剂量下，TH-682的静态阻垢率均高于HEDP、ATMP和国外药剂-A。通过电厂低硬度、强腐蚀水现场应用一年，TH-682的缓蚀阻垢效果良好。并且TH-682含磷低，仅为4．8％，可以有效避免磷的水中富营养化问题。

Performance Research of TH-682 Low Phosphorus Scale and Corrosion Inhibitor in Different Qualities Water

TH-682 is a new type corrosion and scale inhibitor with low phosphorus, which has advantages of good corrosion and scale inhibition performance. TH-682 has the best inhibition effect on carbon steel over five major river systems, especially for ultra-low hardness and corrosive water in the South China. Results indicate that when the chemical dosage in circulating water is 60 mg/L, the corrosion rate can meet GB 50050-2007 industrial circulating cooling water design standard. The static scale inhibition rate of TH-682 is the highest among HEDP, ATMP and foreign products-A with different chemical dosages. TH-682 has been applied to circulating cooling water of one power plant for one year. Results indicate that TH-682 has good inhibition corrosion and scale performance. Furthermore, it contains low phosphorus, only 4.8%, which can effectively avoid the eutrophication phosphorus in water.