Abstract:

The operation condition of the air cooler pipeline system of hydrocracker was simulated by a rotary single-phase erosion experimental device. The critical erosion-corrosion properties of 20^# steel pipe in sulfur-containing waste water was determined by using the electrochemical method. The micro-morphology of the protective corrosion product film was analyzed by scanning electron microscopy (SEM). Under experimental conditions, the thickness of the protective corrosion product film was 30—40 μm， and the critical flow velocity that caused erosion-corrosion of the protective corrosion product film of 20^# steel was about 8.03 m·s^-1.

Key words:

加氢裂化, 含硫污水, 冲蚀, 临界特性, 电化学测试方法

摘要：

利用旋转式单相流冲蚀实验装置模拟加氢空冷器管道系统的工况条件，采用电化学测试方法，研究20^#碳钢在含硫污水中的冲蚀临界特性。利用电子扫描电镜（SEM）表征试件表面腐蚀产物保护膜的微观形貌。结果表明：实验条件下，20^#碳钢腐蚀产物保护膜的厚度约为30～40 μm，使腐蚀产物膜发生冲蚀破坏的介质临界流速约为8.03 m·s^-1。

关键词:

加氢裂化, 含硫污水, 冲蚀, 临界特性, 电化学测试方法