新型低磷循环冷却水缓蚀阻垢剂的实验室研究

Laboratory Study of a New Kind of Low Phosphorus Corrosion and Scale Inhibitor in Circulating Cooling Water System

在实验室合成绿色无磷阻垢剂聚环氧琥珀酸(PESA),进行结构表征与性能测试,表明合成产物有较好的阻垢性能。将聚环氧琥珀酸与氨基三亚甲基膦酸(ATMP)、羟基亚乙基二膦酸(HEDP)进行复配的试验表明,在投加质量浓度分别为25,15,10 mg/L时,能达到理想的缓蚀阻垢效果。对复配药剂阻垢机理的探讨表明,药剂分子的螯合和分散作用改变了碳酸钙的晶型,一定程度上阻止了垢的沉积。

Green scale inhibitor polyepoxysuccinic acid（ PESA） has been synthesized in the laboratory. Structural characterization and performance tests show that synthetic products have good scale performance. The tests of the complex of PESA, amino trimethylene phosphonic acid（ ATMP） and hydroxy- ethylidene diphosphonic acid（ HEDP） show that when the concentration of the dosing is 25,15,10 mg/L respectively,the complex can achieve the desired effect. The investigation of the mechanism of inhibition of the complex shows that chelating agents and dispersing agents of the molecule have changed the role of calcium carbonate polymorphs,which prevents the deposition of fouling to some extent.