Abstract: The corrosion factors in cooling equipment of Liaoyuan refinery was studied in this paper, and it is shown that the main reason of serious corrosion is that high slime content in circulating water leads to the deposition of dirt, which makes heat transfer efficiency drop, and seriously affects the normal operation of the heat exchange. In addition, the growth of microorganisms in circulating water brings great harm to the circulating water equipment, a large number of microorganism mucus secretions made the impurity of water and a chemical precipitate adhesive in the heat exchanger surface, and further leads to the formation of mud and debris, and finally blockage of equipment and leakage would occur. The leakage of the equipment will cause the loss of corrosion inhibitor seriously, which increases the deterioration of water quality. The chloride or sulfate ions in the water will accelerate the pitting of the carbon steel.

Key words: Water cooler , circulating water , Oil refinery plant , Corrosion, Reason

摘要： 对辽化炼油厂水冷设备腐蚀因素进行了实验分析研究,结果发现,造成本厂水冷设备腐蚀严重的主
要原因是某些装置循环水中生物黏泥含量高导致污垢沉积,污垢的沉积使水冷设备换热效率下降,严重影响热交换
的正常进行。另外循环水中微生物的滋长给循环水设备带来极大危害,大量微生物分泌的黏液使水中漂浮的杂质
和化学沉淀物黏附在换热器的传热面上导致黏泥和软垢的生成,严重时会导致设备堵塞乃至泄漏。设备泄漏后会
导致系统中阻垢缓蚀剂流失严重,进而加重水质的恶化。

关键词: 水冷设备 , 循环水 , 炼油厂 , 腐蚀 , 原因