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51316-7740-Corrosion of Carbon Steel in Water Equilibriated with Liquid and Supercritical CO2

Picture for Corrosion of Carbon Steel in Water Equilibriated with Liquid and Supercritical CO2
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Product Number: 51316-7740-SG
ISBN: 7740 2016 CP
Author: Bjørn Morland
Publication Date: 2016
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Carbon Capture Utilisation and Storage (CCUS) requires pipeline transport of large quantities of liquid and supercritical CO2. Free water cannot be accepted in the pipeline and accidental ingress of water has to be removed immediately. The acceptable response time after water contamination will be system specific and depend on the corrosion rate and corrosion allowance. Presently the corrosion rate in a pipeline suffering from accidental water ingress cannot be estimated accurately due to lack of corrosion data at high CO2 partial pressure.The present paper discusses the results from flow loop experiments where carbon steel specimens were exposed to water equilibrated with liquid gaseous and supercritical CO2. The experiments were carried out at 25 °C flow velocity 0.65 m/s and CO2 pressures ranging from 1 to 10 MPa. The corrosion rates were determined from electrochemical measurement iron count and weight loss. The corrosion rate increased with increasing CO2 pressure up to 2 MPa (13 mm/y) at higher pressures (4 to 10 MPa) the corrosion rate was slightly lower (9-12mm/y) and independent of CO2 pressure. No protective film was formed under these conditions.
Carbon Capture Utilisation and Storage (CCUS) requires pipeline transport of large quantities of liquid and supercritical CO2. Free water cannot be accepted in the pipeline and accidental ingress of water has to be removed immediately. The acceptable response time after water contamination will be system specific and depend on the corrosion rate and corrosion allowance. Presently the corrosion rate in a pipeline suffering from accidental water ingress cannot be estimated accurately due to lack of corrosion data at high CO2 partial pressure.The present paper discusses the results from flow loop experiments where carbon steel specimens were exposed to water equilibrated with liquid gaseous and supercritical CO2. The experiments were carried out at 25 °C flow velocity 0.65 m/s and CO2 pressures ranging from 1 to 10 MPa. The corrosion rates were determined from electrochemical measurement iron count and weight loss. The corrosion rate increased with increasing CO2 pressure up to 2 MPa (13 mm/y) at higher pressures (4 to 10 MPa) the corrosion rate was slightly lower (9-12mm/y) and independent of CO2 pressure. No protective film was formed under these conditions.
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11377 Effect of Water Content on the Corrosion Behavior of Carbon Steel in Supercritical CO2 Phase

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51316-7223-Corrosion Assessment of Pipeline Steels in Supercritical Carbon Dioxide Stream

Product Number: 51316-7223-SG
ISBN: 7223 2016 CP
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Carbon Capture and Storage (CCS). The CO2 stream, captured from power plants contains highly corrosive impurities including H2O vapor, oxygen, and hydrogen sulfide. This paper presents our study on corrosion of pipeline steel in sc-CO2 containing H2O, H2S and/or O2 impurities in an autoclave.
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Lab Performance Testing on Corrosion Inhibitors Under Supercritical Carbon Dioxide Conditions

Product Number: 51317--9474-SG
ISBN: 9474 2017 CP
Author: Larry Chen
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This paper discusses the design philosophy for corrosion inhibitors used for carbon capture, transportation, and storage and the performance testing using rotating cylinder autoclave (RCA) and electrochemical impedance spectroscopy (EIS) methods under CO2 supercritical conditions.
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