采用定点测厚、氢通量等腐蚀检测技术在2008-2010年对中石化四套加工高酸原油常减压装置进行了两年半的腐蚀监测，并将检测结果与API581中数据进行了对比。结果表明， 20#材质在220 ℃以上即腐蚀明显; 焦化装置高温进料线多为Cr5Mo，部分管道腐蚀减薄明显; 304/321材质在288 ℃以下腐蚀轻微，但用于高温、高流速的转油线则腐蚀严重; 316L材质抗高酸油腐蚀性能良好，即使是转油线也基本腐蚀轻微，腐蚀速率约0.1 mm/a，少部分监测点腐蚀速率为0.1～0.2 mm/a。

Corrosion detection technologies such as fixed thickness measurement and hydrogen flux testing were used to monitor the corrosion of 4 atmospheric and racuum distiuation units from 2008 to 2010 for about two and a half years. The monitoring results were compared with the database of API 581. The results showed that material 20# had obvious corrosion when the temperature was over 220 ℃. In the high temperature feed line of coking unit made of material Cr5Mo mainly, some of the pipelines were thinned by corrosion significantly. Corrosion of pipelines with material 304/321 was slight when the temperature was below 288 ℃. Serious corrosion occurred on material 304/321 when used for higher temperature and high fluid velocity transfer line. Material 316L had good anti-corrosion capability in processing high acid crude oil, even the corrosion of transfer line was slight. The corrosion rate of transfer lines with material 316L was about 0.1 mm·a-1, and small part of which was 0.1~0.2 mm·a-1.