The risk associated with CO2 transportation in pipelines during the implementation of CCS technologies

Milko Iovchev, Dimitar Popov, Petyo Gadzhanov

Abstract

In order to decrease carbon dioxide emissions in the atmosphere and to arrest the climate changes in the Earth due to these emissions Commission (through European Technology Platform for Zero Emissions Fossil Fuels Power Plants) decided to suppress this process by implementation of so called CCS technologies (Carbon Capture and Storage Technologies). The implementation of these technologies includes several consecutive steps namely: purification of the flue gases from flying ashes, NOx and SOx dehydration and compression of CO2 (to 80 bar) and transportation of this dense gas to place gas to place of storage. It is possible during this operation maid of carbon steel pipelines to be corroded and some amount of CO2 (as gas) to be released in the atmosphere. As this gas is heavier than the air it can be collected in low-lying areas and therefore increases the risk for population including lethal consequences. These problems are discussed in the paper in order to mitigate pipeline corrosion. Nevertheless in some countries for instance Germany the Implementation of CCS technologies due to this risks are under considerations.