World’s First Marine ‘Carbon Capture’ System by Mitsubishi-Class NK


  • A new project aims to conduct test operations and measurements for a small-scale ship-based CO2 capture demonstration plant.
  • The project, which will deploy the demonstration unit on a Kawasaki Kisen Kaisha, Ltd. vessel working in collaboration with Mitsubishi Shipbuilding Company and Nippon Kaiji Kyokai (ClassNK) is an R&D effort aimed at verifying the equipment’s use.
  • The two-year project will begin with the launch of a HAZID (hazard identification) evaluation of the demonstration plant and deployment on vessels, with verification from ClassNK.
  • Mitsubishi Shipbuilding will begin the development and construction of a small-scale CO2 capture demonstration plant and evaluation of system safety.

Mitsubishi Shipbuilding is partnering with transportation company Kawasaki Kisen Kaisha and non-profitable organisation Nippon Kaiji Kyokai to pilot the world’s first marine-based carbon-capture system, reads the company’s website.

CO2 capture demonstration plant

Mitsubishi Shipbuilding Co., Ltd., a part of Mitsubishi Heavy Industries (MHI) Group, is working in cooperation with Kawasaki Kisen Kaisha, Ltd. (“K” Line) and Nippon Kaiji Kyokai (ClassNK), to conduct test operations and measurements for a small scale ship-based CO2 capture demonstration plant, in order to verify the equipment’s use as a marine-based CO2 capture system.

This project is being conducted with support from the Maritime Bureau of Japan’s Ministry of Land, Infrastructure, Transport and Tourism (MLIT), as part of its assistance project for research and development of technological advancements in marine resource development.

The demonstration involves converting the design of an existing CO2 capture system for onshore power plants to a marine environment, and installing it onboard an actual ship in service.

This month, the consortium will launch a hazard identification (HazID) study for the design of the demonstration plant and the onboard installation, with verification from ClassNK.

Mitsubishi Shipbuilding will undertake manufacturing of the small scale CO2 capture demonstration plant and safety assessment of the system. Then, manufacturing of the demonstration plant will occur in mid-2021.

Carbon Capture on the Ocean project aims to achieve CO2 capture at sea.

First of its kind demonstration

Following operational tests at the factory, the plant will be installed onboard a coal carrier for Tohoku Electric Power Co., Inc. operated by “K” Line.

Through operational and performance confirmation in an actual marine environment, Mitsubishi Shipbuilding will then determine the system specification requirements as a marine-based device and will also consider how to make the plant more compact.

This demonstration experiment at sea is the first of its kind in the world.

The knowledge will be useful for future development of technologies and systems to capture CO2 from the exhaust gases of marine equipment and ships.

In addition, the captured CO2 can be recycled for use as a new source of CO2 for enhanced oil recovery (EOR) processes, or as raw material in synthetic fuel, providing a significant contribution to reductions in GHG emissions.

The project will last two years.

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Source: Mitsubishi Heavy Industries


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