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51315-5755-Influence of Impurities on Corrosion Performance of Pipeline Steels in Supercritical Carbon Dioxide

Picture for Influence of Impurities on Corrosion Performance of Pipeline Steels in Supercritical Carbon Dioxide
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Product Number: 51315-5755-SG
ISBN: 5755 2015 CP
Author: Yimin Zeng
Publication Date: 2015
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Carbon dioxide stream usually contains some impurities such as water oxygen SO2 and H2S etc. which may lead to exacerbated corrosion of pipeline steels. Available data on pipeline corrosion in supercritical CO2 stream is still quite limited and mechanistic understanding is far from certain. Preliminary studies at CanmetMATERIALS showed that the presence of water oxygen and ethanolamine could increase the corrosion rates of carbon steels in supercritical CO­2. In the current work the effects of water oxygen CO2 pressure and flow rate on corrosion performance of X42 X60 X80 and X100 steels were studied using a high pressure rotating cage. The corrosion rates of the steels were determined using weight loss measurements after CO2 stream exposure. The corrosion rates of the steels were relatively high in supercritical CO2 (99.995% Grade 4.8) in the presence of 3 vol% oxygen and 100 g water. Further increase in oxygen and water contents did not cause an increase in the corrosion rates. Alloy composition CO2 pressure and flow rate had negligible influence on the corrosion rates in the same CO2 stream. In supercritical CO2 (99.5% Grade 2.5) containing 3 vol% oxygen and 100 g water however the corrosion rates of the steels were remarkably increased. The surface morphology and the composition of the corrosion products formed under different test conditions were characterized by using SEM/EDS techniques for mechanistic understanding of CO2 corrosion.

Carbon dioxide stream usually contains some impurities such as water oxygen SO2 and H2S etc. which may lead to exacerbated corrosion of pipeline steels. Available data on pipeline corrosion in supercritical CO2 stream is still quite limited and mechanistic understanding is far from certain. Preliminary studies at CanmetMATERIALS showed that the presence of water oxygen and ethanolamine could increase the corrosion rates of carbon steels in supercritical CO­2. In the current work the effects of water oxygen CO2 pressure and flow rate on corrosion performance of X42 X60 X80 and X100 steels were studied using a high pressure rotating cage. The corrosion rates of the steels were determined using weight loss measurements after CO2 stream exposure. The corrosion rates of the steels were relatively high in supercritical CO2 (99.995% Grade 4.8) in the presence of 3 vol% oxygen and 100 g water. Further increase in oxygen and water contents did not cause an increase in the corrosion rates. Alloy composition CO2 pressure and flow rate had negligible influence on the corrosion rates in the same CO2 stream. In supercritical CO2 (99.5% Grade 2.5) containing 3 vol% oxygen and 100 g water however the corrosion rates of the steels were remarkably increased. The surface morphology and the composition of the corrosion products formed under different test conditions were characterized by using SEM/EDS techniques for mechanistic understanding of CO2 corrosion.

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Picture for Corrosion Assessment of Pipeline Steels in Supercritical Carbon Dioxide Stream
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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
Author: Yimin Zeng
Publication Date: 2016
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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.
Picture for Effect of Impurities on the Corrosion Performance of Steels in Supercritical Carbon Dioxide
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51313-02358-Effect of Impurities on the Corrosion Performance of Steels in Supercritical Carbon Dioxide

Product Number: 51313-02357-SG
ISBN: 02357 2013 CP
Author: Sankara Papavinasam
Publication Date: 2013
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Picture for Corrosion Inhibition of Pipeline Steels Under Supercritical CO2 Environment
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Corrosion Inhibition of Pipeline Steels Under Supercritical CO2 Environment

Product Number: 51317--9153-SG
ISBN: 9153 2017 CP
Author: Yoon-Seok Choi
Publication Date: 2017
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In the present study, the performance of imidazoline-based corrosion inhibitor was evaluated by examining environmental effects on the corrosion rate and corrosion behavior of materials.
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