Electrochemical investigation of corrosion in CO2 capture plants-Influence of amines

The results of the corrosion tests on carbon steel show that reductions in corrosion rate, compared with those for MEA, are possible with the novel solvents. Under laboratory conditions, the electrochemical data also indicate that the presence of oxygen causes a significant decrease in the corrosion rate in all systems studied. Whether an increase in oxygen concentration can be used in practical PCC applications depends on the long term stability of new amine formulations under these more strongly oxidizing conditions. Longer term testing is required to determine whether novel blends, such as CSIRO-1, possess the required chemical stability in the presence of typical variations in oxygen and CO2 concentration as well as temperature.