Corrosion evaluation of pipeline steels in H2O-saturated s-CO2 environments

We are studying how to transport CO2 efficiently and safely after capturing it from places like power plants. To do this, we have to compress the CO2 above a specific point to avoid any problems during transportation. But this compressed CO2 can be very corrosive and harmful to the materials used in pipelines, especially steel. Our research is focused on understanding how different impurities in the CO2, like excess water, can affect the corrosion of steel in these environments. We want to find out why some research studies have shown different results, and we believe the presence of excess water might be one of the reasons. To get a better idea, we will carefully control the amount of water in the CO2, along with other impurities like oxygen and sulfur, and test how pipeline steels react in this environment. We will do this by exposing the steel samples to the CO2 at certain temperatures and pressures for a specific time. After the tests, we will look at the steel’s surface using special microscopes and tools to see how it reacts to the CO2 and impurities.

Faculty Supervisor:

Jing Liu

Student:

Partner:

EVRAZ North America

Discipline:

Engineering

Sector:

Manufacturing; Mining; Professional, scientific and technical services

University:

University of Alberta

Program: