Development of Onboard CO₂ Capture System

Abstract

With increasing global momentum for decarbonization, IMO adopted a "Initial Strategy on reduction of GHG emission from ships" aimed at halving GHG emissions from international shipping by 2050 and reducing these emissions to zero as soon as possible in this century. Even a speedier reduction has been discussed in many quarters. As a measure to reduce GHG emissions, a shift from fossil fuels to alternative fuels, such as synfuels, hydrogen and ammonia, has been studied. On the other hand, the utilization and semi-permanent storage of captured CO₂ is also regarded as one promising option to reduce GHG emissions. As part of Mitsubishi Heavy Industries Group's energy transition strategy, Mitsubishi Shipbuilding Co., Ltd. is engaged in the development of an onboard CO₂ capture system with the aim of reducing CO₂ emissions from ships. This paper introduces the "Carbon Capture on the Ocean" (CC-Ocean) project for verification testing of an onboard CO₂ capture system, which was conducted in cooperation with Kawasaki Kisen Kaisha, Ltd. and Nippon Kaiji Kyokai, with support from the Ministry of Land, Infrastructure, Transport and Tourism.