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Effect of Acetic Acid on Sour Corrosion of Carbon Steel

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An experimental study of corrosion of carbon steel in the presence of H2S, CO2 and acetic acid has been carried out. H2S and CO2 partial pressures up to 10 bar each were applied, with temperatures of 25 and 90oC.

Product Number: 51317--9318-SG
ISBN: 9318 2017 CP
Author: Jon Kvarekval
Publication Date: 2017
Industry: Science of Corrosion
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$20.00
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An experimental study of corrosion of carbon steel in the presence of H2S, CO2 and acetic acid has been carried out. H2S and CO2 partial pressures up to 10 bar each were applied, with temperatures of 25 and 90oC. The test solutions consisted of high-salinity brine (100 g/L NaCl, 150 ppm bicarbonate) and low-salinity condensed water (0.1 g/L NaCl). The duration of the tests was around 14 days. Both weight loss corrosion and localized corrosion data were obtained. The entire surfaces of the exposed coupons were scanned with a 3D profilometer, obtaining detailed data on localized corrosion morphology, pit frequency and pit depths. The results are discussed on the background of previous findings and available literature.

Keywords: Sour corrosion, carbon steel, pitting, localized corrosion, acetic acid

An experimental study of corrosion of carbon steel in the presence of H2S, CO2 and acetic acid has been carried out. H2S and CO2 partial pressures up to 10 bar each were applied, with temperatures of 25 and 90oC. The test solutions consisted of high-salinity brine (100 g/L NaCl, 150 ppm bicarbonate) and low-salinity condensed water (0.1 g/L NaCl). The duration of the tests was around 14 days. Both weight loss corrosion and localized corrosion data were obtained. The entire surfaces of the exposed coupons were scanned with a 3D profilometer, obtaining detailed data on localized corrosion morphology, pit frequency and pit depths. The results are discussed on the background of previous findings and available literature.

Keywords: Sour corrosion, carbon steel, pitting, localized corrosion, acetic acid

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