关键词: 水冷设备 , 循环水 , 炼油厂 , 腐蚀 , 原因

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