Corrosion Behavior of Stainless Steels in CO2 Absorption Process Using Aqueous Solution of Monoethanolamine (MEA)

The corrosion behavior of two stainless steels (316L and 304L) was evaluated using a CO2-loaded aqueous solution 30 wt.% monoethanolamine (MEA) with view to simulating related mechanisms in amine treatment procedures. Corrosion experimentally as function CO2 loading temperature, electrochemical techniques (polarization curves, cyclic polarization, EIS measurement). results reveal that the MEA containing creates favorable environment for both steels. rate is accelerated when temperature loaded rises, which attributed thermal degradation MEA, thus causing higher kinetics cathodic reactions at temperatures. More specifically, SS 304L almost doubled increased from 25 °C 40 quadrupled rises 80 °C. For 316L, becomes threefold sixfold upon increasing load °C, respectively. overall 316L lower respect same conditions. essential dependency on type (unloaded solution) demonstrates process are controlled by diffusion mechanism.