The DerisCO2 project will contribute to the goal of a reduction of direct CO2 emissions from ships and other sea going units by up to ninety per cent compared to current emissions, through capturing the carbon dioxide and temporarily storing it on board at a cost price of less than fifty euros per tonne. The project is being implemented with a Topsector Energy subsidy from the Dutch Ministry of Economic Affairs (TCCU118008). The conclusions of the CO2ASTS feasibility study, in which TNO and Heerema also participate, form the input for this project.
Focus of the research is on LNG-fuelled vessels, for two reasons. Firstly, gas-fuelled engines produce relatively clean exhaust gases, reducing the complexity of the CO2 capture system. Secondly, the captured CO2 needs to be cooled in order to store it as a liquid. The LNG, stored onboard at very low temperatures, can be used for this liquefaction process, reducing both the energy required for SBCC and the cost of the capture system itself.
The DerisCO2 project focuses on the following results:
1. An improved concept of a ship-based CO2 capture system, combining the use of a novel solvent system, optimised for LNGbased SBCC.
2. CO2 capture pre-piloting tests supporting the credibility of the proposed concept, including the effect of ship motions on the capture process, thereby closing technological gaps for piloting.
3. Techno-economic analyses stating the economic feasibility of SBCC for Heerema’s new LNG-fuelled semi-submersible crane vessel Sleipnir.
If feasibility is shown for Heerema’s Sleipnir use case, a follow-up project could be initiated towards a piloting and demonstrator phase.