کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1743258 | 1522009 | 2013 | 8 صفحه PDF | دانلود رایگان |

Pure carbon dioxide is reported not to be corrosive. In the presence of impurities corrosion of pipelines is a risk CCS systems are exposed to. Allowable concentrations of gas constituents and humidity are not yet fully determined. Therefore, three different materials, two pipeline steels and pure iron, have been exposed to continuous flows of carbon dioxide with varying concentrations of water, sulphur dioxide and oxygen to approach carbon capture and storage conditions. Corrosion effects occurred when condensates containing sulphurous and sulphuric acids precipitated. A variety of different morphologic characteristics in direct vicinity were found. The surface appeared to be uniformly corroded, and no significant localized corrosion was found. Although X-ray spectroscopy revealed an oxygen depleted layer in the corrosion build-up (indicating the presence of sulphides), only iron sulphite and sulphate have been detected with X-ray diffraction. Material and thickness losses were severe for elevated humidity and 650 ppm sulphur dioxide.
► Sulfur dioxide, oxygen and water in CO2 potentially very corrosive.
► Severe material losses on pipeline steels with SO2 and 1 volume percent water.
► No localized but uniform corrosion.
► Corrosion products contain sulfite and sulfate.
Journal: International Journal of Greenhouse Gas Control - Volume 13, March 2013, Pages 9–16