Study on Fracture Characteristics of CO2 Transport Pipeline

Abstract

Republic of Korea is the seventh largest CO2 emission country in 2010 and the third fastest country in the growth of CO2 emission. To mitigate the effect of CO2 on the climate change and global warming, we should reduce the anthropogenic CO2 emissions from sources such as the power plants and iron works. So carbon dioxide capture and storage (CCS) technology is regarded as one of most promising reduction options in Korea. CO2 transport using pipeline is one of the prevalent methods for the CCS. In this study, the fracture characteristics of CO2 transport pipeline for the CCS in Korea were studied. To avoid the fracture propagation of CO2 pipeline, we should reinforce the toughness of the pipeline. Therefore, the CO2 pipeline should be optimised because it is so expensive to reinforce the pipeline. The characteristics of fracture propagation and arrest of CO2 pipeline could be analysed by the Battelle two-curve model (TCM). If there exists a pressure at which the fracture velocity and the CO2 decompression wave velocity are same, the pressure at crack will remain constant and then a ductile fracture will propagate along the pipeline. The CO2 transport system using pipeline will be optimized by studying the fracture characteristics depending on the pipeline and CO2 properties. The CO2 from the sources is not pure one because they include impurities such as N2, H2O, CH4 and so on.c CO2 emissions from sources such as the power plants and iron works. So carbon dioxide capture and storage (CCS) technology is regarded as one of most promising reduction options in Korea. CO2 transport using pipeline is one of the prevalent methods for the CCS. In this study, the fracture characteristics of CO2 transport pipeline for the CCS in Korea were studied. To avoid the fracture propagation of CO2 pipeline, we should reinforce the toughness of the pipeline. Therefore, the CO2 pipeline should be optimised because it is so expensive to reinforce the pipeline. The characteristics of fracture propagation and arrest of CO2 pipeline could be analysed by the Battelle two-curve model (TCM). If there exists a pressure at which the fracture velocity and the CO2 decompression wave velocity are same, the pressure at crack will remain constant and then a ductile fracture will propagate along the pipeline. The CO2 transport system using pipeline will be optimized by studying the fracture characteristics depending on the pipeline and CO2 properties. The CO2 from the sources is not pure one because they include impurities such as N2, H2O, CH4 and so on.