(348g) Onboard Membrane Carbon Capture and Liquefaction Design of LNG-Fueled Vessels

Shipping has the lowest carbon emissions compared to other modes of commercial transportation. However, to satisfy the Paris Climate Agreement in 2015, International shipping is making efforts to reduce carbon emissions through regulations on Energy Efficiency Design Index (EEDI) for ships established in the 62nd sessions of the International Maritime Organization’s (IMO) Marine Environment Protection Committee (MEPC). To meet the IMO’s greenhouse gas targets, alternative fuels such as liquefied natural gas(LNG), ammonia, and hydrogen are being explored by the shipbuilding and shipping industries. However, except for LNG, these fuels have several challenges to be adopted on vessels. For this reason, this study proposes the onboard membrane carbon capture and liquefaction system as a feasible alternative. Most previous studies concerning carbon capture mainly addressed the land-based power plants. Thus, there is a lack of research and awareness about onboard carbon capture and liquefaction. However, it consumes less energy and occupies less space than the land-based system because it only needs to satisfy the EEDI regulations. Therefore, this study suggests the onboard membrane carbon capture and liquefaction system as a feasible alternative technology by comparing the energy consumption.