CORROSIVITY IN 2-AMINO-2-METHYL-1-PROPANOL (AMP)-CO2 SYSTEM

Weight loss tests were performed to investigate the corrosivity of a n ew absorbent, 2-amino-2-methyl-1-propanol (AMP) saturated with pure CO 2 and Mixture of CO2 and air on carbon steel under boiling conditions. The corrosion data were compared with those of a conventional amine, monoethanolamine (MEA), tested under the same conditions. The results indicated that corrosion rates in the AMP system were generally lower than those in the MEA system, probably due to differences in character istics of the corrosion products in each of the absorbents. Corrosivit y in the AMP system tended to stabilize when the amine concentration r eached 5 kmol/m(3) while corrosion rates in the MEA system were direct ly proportional to amine concentrations. Furthermore, it was observed that a small amount of O-2 seemed to expedite severe corrosion.