CORROSION AND PROTECTION OF LOW TEMPERATURE SECTION IN CRUDE OIL UNIT

The corrosion problems in low temperature section of crude oil unit in Shengli Refinery were analyzed.The main reasons of corrosion were the instability of desalting operation and pH control,the high contents of sulfur and organic chloride in crude oil.The protection methods adopted are described,and the suggestions such as optimization of process anti-corrosion project and strengthening of the corrosion monitoring are presented.