煤化工循环水阻垢缓蚀剂(JC-800)的制备及应用

Preparation of Coal Chemical Circulating Water Scale and Corrosion Inhibitor(JC-800)and Its Application

针对西北地区煤化工企业高碱度、高硬度、高pH循环冷却水的水质特点,以锌盐、2-膦酸丁烷-1,2,4-三羧酸、苯并三氮唑、马来酸-丙烯酸共聚物等为原料,制备出适用于西北地区煤化工企业循环冷却水的阻垢缓蚀剂(JC-800),并通过静态阻垢试验、旋转挂片腐蚀试验和现场应用试验对其进行评价。同时,在不同水质条件下,确定达到最佳缓蚀效果时的药剂投加量。测试期间系统运行情况良好,循环水管道运行正常。该阻垢缓蚀剂各项指标满足国标和行业标准,综合性能优于现有阻垢剂,具有广阔的应用前景。

The water quality of circulating cooling water from coal chemical enterprises in Northwest China is characterized by high basicity,hardness and pH.By using zinc salt,2-phosphonate butane-1,2,4-tricarboxylic acid,benzotriazole and maleic acid/acrylic acid copolymer as the raw materials,a scale and corrosion inhibitor(JC-800)suitable for circulating cooling water from coal chemical enterprises in Northwest China was prepared and evaluated by static scale inhibition test,rotating coupon corrosion test and field application test.In addition,the dosage of inhibitor to achieve the best corrosion inhibition performance was determined under different water quality conditions.The system operated well and the circulating water pipe ran normally during the test.The indicators of the inhibitor meet the requirements of national and industrial standards,and its comprehensive performance is better than the existing scale inhibitors,which has a broad application prospect.