August 19th, 2024
Japan CCS Co., Ltd.
Nippon Gas Line Co., Ltd.
Startup of the Liquefied CO2 Ship Transportation Demonstration Project
Between 19th and 27th July, as part of the NEDO※1 demonstration project※2, the liquefied CO2transport demonstration vessel "EXCOOL" operated by Nippon Gas Line Co., Ltd. conductedliquefied CO2 loading and unloading, shifting within the port (marine transportation), and storage
in the onshore tank at the onshore terminal (Tomakomai Terminal), which is under construction
by Japan CCS Co., Ltd.
The liquefied CO2 transport demonstration vessel "EXCOOL" has been equipped with amarine cargo tank system capable of demonstrating liquefied CO2 transportation at low
temperatures and low pressures, which was developed by the New Energy and Industrial
Technology Development Organization (NEDO) project aimed at developing integrated
technology for transporting large amounts of liquefied CO2 for long distances. Since completionin November 2023, the vessel has been conducting training such as crew training andloading/unloading operation in preparation for various demonstrations planned in the NEDO
project.
This demonstration, comprised of loading liquefied CO2 from a tank truck at a berth inTomakomai Port, shifting the vessel from the berth to the Tomakomai Terminal, unloading andstoring the CO2 in the onshore storage tank was conducted upon receiving the understanding
and support of local stakeholders as well as the required approvals from the relevant authorities.
Up to now, the condition of liquefied CO2 for transportation has been generally around -20℃,
1.9MPaG, or so-called medium temperature and medium pressure. This demonstration wasconducted using liquefied CO2 at a lower temperature of around -35℃ for the first time.
After completing the construction of onshore terminals in Maizuru and Tomakomai, full-scaledemonstration at various transport conditions including low temperature and low pressure (-50℃,0.6MPaG) are scheduled to start.
Japan CCS Co.,Ltd., under the commissioning of NEDO will carry out the exploration anddevelopment of optimal temperature/pressure conditions for the onshore terminal with regard tointegrated CO2 ship transportation through the construction and operation of both onshore
terminals, which have liquefaction, storage and cargo handling facilities. Nippon Gas Line Co.,
Ltd., also under the commissioning of NEDO will utilize its know-how in the operation of coastal
gas carriers and carry out data measurements such as CO2 temperature, pressure, and flow
velocity while operating "EXCOOL" and develop optimal transportation and cargo handling
methods.
※1 New Energy and Industrial Technology Development Organization(https://www.nedo.go.jp/english/index.html)

※2 R&D and Demonstration of CO2 Ship Transportation[Scenes from demonstration]

・“EXCOOL” berthing at onshore terminal

・Manifold onboard “EXCOOL”

Liquefied CO2 is being transferred through the loading

Transferring the liquefied CO2 by connecting thearm shown in the middle.

loading arm and ship.

【Inquiries regarding this matter】
Japan CCS Co., Ltd.

Nippon Gas Line Co., Ltd.

International Affairs Dept.

Planning Dept.

TEL: 03-6268-7387

TEL: 03-5148-8855