Corrosion rate of high CO2 pressure pipeline steel for carbon capture transport and storage

摘要: The paper deals with the effect of pressure, temperature and time on corrosion rate pipeline steels in CO2 saturated water humid gas range from 25 to 60°C pressure 20 145 bar, up 400 hours exposure. results weight loss tests show very high rates aqueous phase, one or two order magnitude higher than values obtained water, but remaining any case much lower extrapolated by De Waard Milliams model at partial pressure. Depending cementite iron carbonate scales can grow metallic surface reducing rate. SEM metallographic analysis evidenced evolution scale defective cementitebased layer protective compact scale.