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A large scale, carbon dioxide (CO2) injection system from Hyundai Heavy Industries Group (HHI Group) has been awarded approval in principle by the American Bureau of Shipping (ABS). Plastic Insert Molding
The 1m tonne injection system will allow for offshore CO2 storage in geological formations under the ocean floor and more than doubles the previous injection capacity, supporting development of the carbon value chain and global decarbonisation goals.
Christopher J. Wiernicki, ABS Chairman, President and CEO, said, “Net zero cannot realistically be achieved without efficient carbon capture and storage technology. ABS is committed to delivering industry-leading support for transformational technologies such as these which have such a critical role to play in creating a more sustainable industry.”
The injection system will be installed and operated on a floating offshore platform, receiving CO2 from visiting gas carriers. The system will be equipped with a powerless CO2 heating circuit where the heating medium is circulated in a closed loop using seawater and without an external power source, which is designed to improve efficiency and allow the capture of the emitted gas to be stored underground on site.
Sungjoon Kim, Senior Executive Vice President & CTO of Korea Shipbuilding & Offshore Engineering, said it will continue to co-operate on the development of offshore CCS technologies in the marine industry.
Oceans’ appeal with CO2 capture
The oceans already absorb almost a third of our CO2 emissions and, as calls for greater deployment of carbon capture and storage technology (CCUS) grow, they could be used to store much more, according to the International Energy Forum.
Seawater has vast capacity for storing CO2, holding around 150 times more CO2 per unit volume than air. Oceans are already the world’s largest carbon sinks, and there is interest in using them to sequester CO2 captured from the atmosphere as part of climate mitigation efforts – with many governments mentioning this approach in their climate commitments. At depths of 2.7km and beyond, CO2 is denser than seawater and sinks to the ocean floor, where it remains sequestered for centuries.
It is estimated that around 1,000GT of CO2 could be injected without causing significant changes to the ocean and marine life.
Another way to remove CO2 is to run electrical currents through seawater. This triggers a series of chemical reactions that turn dissolved CO2 into solid minerals, which can be deposited on the ocean floor.
Molding Precision Dominic Ellis is Deputy Editor of gasworld and H2 View. Dominic, who joined the company in August 2022, has more than 25 years’ editorial experience, working across a wide range of business magazines and websites in the UK and the Middle East.