Introduction
Delayed coking unit is the processing that turn the thermal cracking into depth of residual gas, light middle distillate and coke. Coke tower in hot cracking residue in the process of generating the hydrogen sulfide ammonia, which gets into the tower and condenses the cooling system fractionation with formation water temperature in HCl in the CN H₂S, NH₃ - H₂O corrosive environment which caused the damage of leakage by fractionation of tower internals and subsequent equipment, pipeline, heat exchanger, etc. Even corrosive perforations of the metal corrosion or general corrosion, hydrogen sulfide stress corrosion bulge and etc. WD03-301 type corrosion inhibitor is a kind of corrosion inhibitors imidazole Lin, and metal function mainly is absorbed through physical and chemical, absorption in metal surface film, and the corrosion inhibitor molecule adsorbed in the polargroup metal surface which changes electric double layer structure, and improve the activation process of metal ionization and the corrosion in the polar groups from metal surface for directionally aligned to form a protective film, and it becomes the hydrophobic diffusion barrier erosion reactants, thereby corrosion inhibition can happen in the reaction.
Quality Index

Use method and amount
☆ The recommended amount is 20～80μg/g；Regulate with the properties of the oil, materials or the amount of S.
☆ The entrance is on the top of the tower or before the cool conditioner.
Test method
☆ Regulatory test the amount of iron icon, and make sure the amount is lower than 3mg/l。
Package
☆ 25-200kg plastic barrels and Stored in cool and dry environment and avoid of fire..
storage and transportation
☆ Avoid of sunlight, rain and knocking.
☆ Stored in cool, clean and dry environment.