An Experimental Study of CO2 Pipeline Transport for CCS Application

Abstract

Carbon dioxide capture and storage (CCS) technology is regarded as one of the most promising emission reduction options for the mitigation of climate change and global warming. Although the technologies for capture and storage of CO2 have been globally investigated and verified, the development of transport infrastructure is still in the initial stage except some typical cases. Especially, the effect of impurities on transport and injection is not clearly resolved yet. Up to now, process design researches for CO2 transport and storage have been focused on pure CO2 case. Unfortunately, some impurities such as N2, H2O, SOx, H2S can change the thermodynamic properties and then significantly affect the compression, purification, transport and injection processes. In this study, CO2-imputities mixture pipeline transport process was experimentally investigated. The experimental apparatus consisted of high pressure compression module, liquefaction module, mixing module, cooling module and transport test section. To understand the physical behavior of high pressure CO2-N2 mixture flow, the effect of transport pressure, N2 impurity concentration on single phase and two- phase pressure drop was analyzed. Based on this experimental data, we may suggest some design guideline for CO2 pipeline transport. Finally, we introduce the CCS demonstration project and hypothetical pipeline transport scenario