CCS from multiple sources to offshore storage site complex via ship transport

AbstractFor the developed countries whose increase of demand of fuel energy has become slow, Japan for example, CCS would need to be deployed under the given conditions, such as geographical localities of large emission sources, social conditions facing each plant, etc. In order to address the issues emerged from such restrictions, the authors propose the hub-type CCS, featuring shuttle ships and socket buoys. Carbon dioxide (CO2) injection wells for Japan’s (or a certain country’s) CCS in the immediate future are to be located keeping proper space among one another within one or two intensive sea areas, so that the human and financial resources could be efficiently allocated to the geological survey, the environmental assessment, the public communication and moreover to monitoring after the launch of CCS. Then, multiple existing plants would be retrofitted to the CO2 capture facilities on their respective reasonable scale. Capture-ready new plants may also be fitted well to this scheme. CO2 would be transported by ships from the multiple sources to the storage site complex and injected to the assigned wells via socket buoys. This paper describes a preliminary feasibility study on CO2 ship transport system with the tentative size of one unit, that is, a spoke of the proposed hub-type CCS