一种环保型阻垢缓蚀剂的性能

Performance of an environmentally friendly scale and corrosion inhibitor

以聚环氧琥珀酸(PESA)、聚丙烯酸(PAA)、水解聚马来酸酐(HPMA)、苯并三氮唑(BTA)为原料,研制出一种新型具有环保功能的复合型高效阻垢缓蚀剂。通过正交试验确定该阻垢缓蚀剂中各组分的最佳浓度为:PESA(1.0 mg/L)/PAA(1.0 mg/L)/HPMA(0.6 mg/L)/BTA(0.5 mg/L)。分别采用鼓泡法、电化学试验和旋转挂片腐蚀试验研究了其阻垢缓蚀性能。试验结果表明,该阻垢缓蚀剂的阻垢率为92%,对A3碳钢、铜、不锈钢的缓蚀率分别达到了83%、97%、99%,动态模拟试验结果也显示该阻垢缓蚀剂满足循环冷却水运行要求。

A new kind of efficient environmentally-friendly composite scale and corrosion inhibitor consisting of polyepoxysuccinic acid（PESA）, polyacrylic acid（PAA）, hydrolyzed polymaleic anhydride（HPMA）, benzotriazole（BTA） was developed. The optimal concentrations of such components obtained from orthogonal experiments were PESA（1.0 mg/L）/PAA（1.0 mg/L）/HPMA（0.6 mg/L）/BTA（0.5 mg/L）. Its scale inhibition and corrosion inhibition performance was studied with bubble method,electrochemical experiment and rotary weight loss/hanging-piece corrosion experiment. The scale inhibiting rate and corrosion inhibiting rates for A3 carbon steel,copper,stainless steel of the scale and corrosion inhibitor were 92% and 83%,97%,99%,respectively. Further dynamic simulated test also indicated that the scale and corrosion inhibitor meet the demand of circulating cooling water.