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Corrosion reactions in simulated CO2 ship transport conditions

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For certain CCS (carbon capture and storage) projects, ship transport of captured CO2 to the storage site may prove more optimal than pipeline transport. The CO2 will be transported under two-phase conditions at low temperature (-10 to -25 °C) and moderate pressure (1.7 – 2.7 MPa), which are quite different from the typical pipeline transport conditions (5 – 60 °C and 7 – 12 MPa). Corrosion under pipeline conditions has been relatively well studied, and several conditions (impurity mixtures) that results in formation of corrosive acids have been identified. In contrast, almost no research exists on corrosion under ship transport conditions when the CO2 contains impurities. The present work tested corrosion of carbon steel at -25°C in CO2 with different concentrations of H2O, H2S, O2, NO2 and SO2. The experiments demonstrated that certain combinations of impurities gave no chemical reactions and no corrosion, while other combinations resulted in formation of solids and corrosive components that attacked carbon steel. The mass loss corrosion rate was around 0.1 mm/y. 

Product Number: 51320-14572-SG
Author: Morten Tjelta, Bjørn Helge Morland
Publication Date: 2020
$20.00
$20.00
$20.00
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Impurity Reactions in Gaseous and Liquid CO2 Streams

Product Number: 51324-20788-SG
Author: Bjørn Helge Morland; Gaute Svenningsen; Johannes Sonke
Publication Date: 2024
$40.00
Safe transportation of CO2 for carbon capture and storage requires strict control of contaminants in the captured CO2, so that corrosion and particulate matter problems are avoided. The present work tested two almost similar CO2 specifications for chemical reactions and liquid or solid drop-out. The tests were carried out with CO2 in liquid and gaseous state, at field-relevant pressure and temperatures. It was shown that the NO2 content had a strong effect on chemical reactions and tendency to drop-out, but the threshold was different depending on the physical state of the CO2. Presence of NO2 resulted in chemical reactions. Drop-outs were observed for 3 ppm-mol NO2 in the liquid state (+4°C, 100 bar) and for 8 ppm-mol in the gaseous state ( -3°C, 25 bar).
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Corrosion And Chemical Reactions In Simulated Ship Transport CO2 Containers

Product Number: 51321-16669-SG
Author: Gaute Svenningsen; Bjørn Helge Morland; Arne Dugstad
Publication Date: 2021
$20.00
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