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This work investigated corrosion of carbon steel in the CO 2 capture unit using aqueous solutions of blended monoethanolamine (MEA) and piperazine (PZ). Results show the MEA/PZ solutions are more corrosive than the MEA solutions. Corrosion rate increases with PZ concentration, total amine concentration, CO 2 loading, solution temperature and heat stable salts. Formate is the most corrosive...
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