一、概况上海石化总厂睛纶厂回收车间硫氰酸钠蒸发预热器共12台,材质均为1Cr18Ni12Mo2Ti,1980年大修期间,发现~#6预热器两端花板和部分列管管口严重腐蚀,影响继续使用。经实体检查,我们决定采用有机耐蚀涂料进行修复。经检修投产运行8000多小时后 First, the overview Shanghai Petrochemical Plant Eye fiber plant recovery plant sodium thiocyanate evaporation preheater a total of 12 units, the material is 1Cr18Ni12Mo2Ti, during the overhaul in 1980 and found ~ # 6 preheater both ends of the flower plate and some of the tube Serious corrosion of mouth, affecting the continued use. After physical examination, we decided to use organic corrosion-resistant coatings for repair. After the maintenance operation more than 8,000 hours