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10192 Effect of Iron Carbonate on the Corrosivity of Amine Solutions in CO2 Removal Unit

Picture for 10192 Effect of Iron Carbonate on the Corrosivity of Amine Solutions in CO2 Removal Unit
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Product Number: 51300-10192-SG
ISBN: 10192 2010 CP
Author: Takahiro Tsuda, Masashi Takeda and Keizo Hosoya
Publication Date: 2010
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This paper describes the corrosion behavior of carbon steel in two, different amine solutions intended for use in a new Acid-gas Removal Unit (AGRU) being developed for use in carbon dioxide capture and storage (CCS) processes. The corrosion rate in both amine solutions was affected by CO2 loading and temperature. The corrosion was also inhibited by the formation of FeCO3 scale. The FeCO3 solubility appeared to be affected by amine complex formation with Fe2+ in CO2 loaded amine solutions. When selecting an amine solution for the AGRU, an amine solution in which FeCO3 is less soluble is important in terms of its effect on the corrosion rate.

Keywords: CO2, Carbon dioxide, FeCO3, iron carbonate, complex, amine, CCS, AGR
This paper describes the corrosion behavior of carbon steel in two, different amine solutions intended for use in a new Acid-gas Removal Unit (AGRU) being developed for use in carbon dioxide capture and storage (CCS) processes. The corrosion rate in both amine solutions was affected by CO2 loading and temperature. The corrosion was also inhibited by the formation of FeCO3 scale. The FeCO3 solubility appeared to be affected by amine complex formation with Fe2+ in CO2 loaded amine solutions. When selecting an amine solution for the AGRU, an amine solution in which FeCO3 is less soluble is important in terms of its effect on the corrosion rate.

Keywords: CO2, Carbon dioxide, FeCO3, iron carbonate, complex, amine, CCS, AGR
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