Graz University of Technology explores feasibility of CO2 caputre on deck

In Austria, researchers at Graz University of Technology (TU Graz) and the COMET K1 Centre LEC (Large Engines Competence Center) have evaluated the feasibility of current CO2 capture technologies for different types of ships in the “CCS on Ships” research project. For its investigation, the team used the LEC ENERsim software developed at the LEC, which simulates complex energy systems and enables the optimization of energy and mass flows.

How much carbon dioxide can ultimately be captured on board the ships depends on a number of factors – first and foremost the type of ship. LNG tankers, for example, have better prerequisites than container ships or general cargo ships due to the existing infrastructure for cooling and storing liquefied gases. Expected future fuel prices, freight rates and CO2 taxes will also influence how much cargo volume shipping companies can forego for interim CO2 storage. However, route planning is also a very important factor, so that the ships can unload the CO2 in appropriately equipped harbours before the storage facilities on board are at full capacity. Andreas Wimmer believes that separation rates of around 30 per cent make sense for initial retrofits to establish the technology.