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０ 前言在尿素生产过程中，其中间物料氨基甲酸铵的腐蚀性非常强，虽然尿素生产所用的高温、高压设备及管道均为３１６Ｌ及其它型号不锈钢材质，但它们在熔融生产介质中却主要依靠作为缓蚀剂加入的氧（或空气）的数量多少来决定设备的腐蚀状态，即活化还是钝化，而设备腐蚀状?
0 Foreword In the urea production process, the intermediate material, ammonium carbamate, is very corrosive. Although the high temperature and pressure equipment and piping used in urea production are 316L and other types of stainless steel, they rely mainly on the molten production medium Corrosion inhibitor as added oxygen (or air) the number of how much to determine the corrosion status of the equipment, that is, activation or passivation, and equipment corrosive?