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一、前言建造钢质油罐、贮存轻质油品(汽油、煤油),不但要保证油罐的使用寿命,防止油罐的腐蚀,而且要保证油品的质量,防止油品因腐蚀而引起的污染。目前轻质油往往因防腐蚀措施不力而造成油罐的严重腐蚀和油品的污染。油罐的腐蚀分为由于贮油的内部腐蚀和由于土壤导电的罐底的外部腐蚀。外部腐蚀一般除采用环氧沥青绝缘层外,还联合应用阴极保护防腐法防止腐蚀。这样可获得较为理想的防腐效果。油罐的内部腐蚀是残渣物或存水等原因造成的底部腐蚀和油中乳化水、夹带水或凝结水滴、瓦斯蒸汽等造成的壁板和顶部腐蚀。
Foreword The construction of steel tanks, storage of light oil (gasoline, kerosene), not only to ensure the life of the tank to prevent tank corrosion, but also to ensure the quality of oil to prevent the oil caused by corrosion Pollution. At present, light oil is often due to ineffective anti-corrosion measures caused by the serious tank corrosion and oil pollution. Corrosion of the tank is divided into internal corrosion due to oil storage and external corrosion due to soil-conductive tank bottom. External corrosion generally used in addition to epoxy asphalt insulation, but also the joint application of cathodic protection against corrosion to prevent corrosion. This can be a better anti-corrosion effect. Internal corrosion of the tank is due to debris or water storage and other causes of the bottom of the corrosion and oil emulsified water, entrained water or condensed water droplets, gas steam caused by the siding and top corrosion.