Abstract: It is an effective way to reuse the refinery wastewater after advanced treatment to the circulating cooling water system in petroleum industry. However，corrosion and fouling are two unfavorable problems in practical application. In this paper，effects of flow velocity and temperature on corrosion and fouling in dynamic circulating cooling water system were investigated. Results showed that the change in flow velocity was only influential to the point corrosion in stainless steel test tube，the most serious point corrosion formed at flow velocity of 1.0 m/s，the weakest point corrosion was found at flow velocity of 0.5 m/s. While，the change in temperature was similarly only influential to the point corrosion in stainless steel test tube，the most serious point corrosion formed at the temperature of 30 ℃，the weakest point corrosion was found at the temperature of 20 ℃. Meanwhile，the fouling in stainless steel test tube showed a sharp increase when temperature increased. To control the fouling formation and to avoid the invalidation of scale inhibitors，the temperature in circulating cooling water system should be controlled no higher than 30 ℃.

摘要： 将达标排放的炼油废水经深度处理后回用于循环冷却水系统，是石油、石化行业节水减污一个行之有效的办法，但腐蚀和结垢则是实际应用中存在的严重问题。本文在动态模拟循环冷却水系统中，考察了流速、温度等因素对腐蚀和结垢的影响。研究表明，对于不锈钢试管，流速的变化只对点蚀速度有影响。其中，在1.0 m/s时点蚀最厉害，在0.5 m/s时点蚀最弱。流速的变化对试管腐蚀影响较小，只有个别时间存在腐蚀情况。对于不锈钢试管，温度的变化只对点蚀速度有影响，30 ℃对点蚀速度的影响最大，在20 ℃时点蚀最弱。温度的变化对试管腐蚀影响较小，只有个别时间存在腐蚀情况，随温度的增加冷却系统管壁结垢现象逐渐明显。无论从抑制系统结垢还是避免阻垢剂失效的角度来看，系统的温度应控制在30 ℃以内。