Effect of Liquefaction Plant Performance and Location on the Cost of CO₂ Transport

Carbon capture and storage (CCS), a key technology for addressing global warming is in between demonstration to commercialization phase. Transportation of CO₂ is required since storage sites are not necessarily present under the source sites. Ships can be used for long distance transport of CO₂; liquefaction being a vital component in ship transportation. In this study, a state of art CO₂ liquefaction process has been designed by taking account of source facilities (i.e. post-combustion and pre-combustion). The proposed liquefaction process offers lower liquefaction energy requirement compared with other available literature. Three different scenarios for post-combustion and pre-combustion each have been studied on the basis of liquefaction plant location. The considered scenarios are categorized as: a) capture site, liquefaction plant and shipping terminal are located close to each other; b) capture site and liquefaction plant are far from shipping terminal; c) capture site is far from liquefaction plant and shipping terminal. Finally, an economic analysis is performed in order to evaluate the feasibility of CO₂ transport from source sites to ship loading terminal including liquefaction plant.