Carbon capture use and storage (CCUS), CO2 transport
The current study considers the transport of CO2 using shuttle ships. It follows on from an earlier study completed by Chiyoda Corporation. In this study, the CO2 is stored and transported at different conditions and the injection site has been relocated meaning that different ocean conditions need to be considered. The viability of an unmanned injection buoy, instead of a platform, was also considered in this study. The impact of the changes to the CO2 conditions and the injection site on the tank and ship design, the loading and unloading equipment and the flexible riser pipe is studied in this report. An economic evaluation is also completed to assess the cost of CO2 transport for a nominal injection volume of 1 million tonnes per year with the transport distance ranging from 200 to 1,600 km. The shuttle ship’s capacity is approximately 3,000 tonnes CO2 and to reach the nominal injection volume requires a shuttle ship to inject its cargo on a daily basis.
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