The thesis aims at introducing the conditions of NS- 1018 neutralization corrosion inhibitor,which was manufactured by Nanjing petrol and chemical company , in FCC fractionator overhead application. From the result, we could draw a conclusion as below, In the raw material oil sulfur volume increased year by year the case , neutralization corrosion inhibitor had a satisfactory corrosion resistance upon Fractionating tower cooler system equipment.%介绍了南京石油化工公司生产的NS-1018中和缓蚀剂在催化裂化装置分馏塔顶的应用情况，使用结果表明，在原料蜡油含硫量逐年增加的情况下，NS-1018中和缓蚀剂对分馏塔顶冷却器系统设备具有良好的缓蚀作用。
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