硫酸铝蒸发器为含高温稀硫酸介质的加热设备,其结构为在蒸发锅内安装加热排管,用蒸汽加热浓缩硫酸铝溶液。由于管壁温度高达150℃,造成十分严重的腐蚀。现在不少工厂改用工业纯钛蒸发管,但腐蚀仍很严重,一般使用几个月即出现腐蚀穿孔,使用两年需全部更新,蒸发器的腐蚀已成为当前硫酸铝行业的一 The aluminum sulfate evaporator is a heating device containing a high-temperature dilute sulfuric acid medium. The structure is that a heating exhaust pipe is installed in the evaporation boiler, and the concentrated aluminum sulfate solution is heated with steam. As the wall temperature as high as 150 ℃, causing very serious corrosion. Many factories now use industrial titanium evaporation tube, but the corrosion is still very serious, the general use of corrosion perforation occurs a few months, the use of two years to be fully updated, the evaporator has become the current corrosion of the aluminum sulfate industry