Solution corrosivity of MDEA/water soluions containing added HClor NaCl have been measured by weight loss coupons at 250°F and by linem polarization resistance (LPR) at 208°F using carbon steel, 304SS, 316SS and 410SS. General corrosion as well as pitting or crevice corrosion tendencies were recorded for each species. Based on these results, recommendations are made for chlorides in MDEA that minimizes corrosion in gas treating operations.
Keywords: methyldlethanolarnine, MDEA, corrosion, chlorides, linear polarization resistance, LPR, gas treating