(p. B4) ATHENS—Ship operators have a radical idea for industrial companies that are searching for ways to dispose of carbon emissions: Take the captured CO2 out to sea and bury it deep under the ocean floor.
But first, supercool the carbon emissions to temperatures so low that they become a liquid.
HD Hyundai Heavy Industries, the world’s largest shipyard, and Greece-based shipowner Capital Product Partners have designed a specialized vessel to carry liquefied CO2. They envision such ships transporting their cargo to depleted offshore oil-and-gas wells, where it would be pumped in and entombed for permanent storage. Capital Product Partners signed a deal for four such ships, to be delivered in 2025 and 2026, that together cost more than $300 million.
“Ships move everything from oil to our furniture, clothes and toothpaste. Now they’ll move our emissions, which is in effect waste management,” said Jerry Kalogiratos, chief executive of U.S.-listed Capital Product Partners, which operates more than 100 cargo vessels.
. . .
“The wells are sealed with a fast drying mix of concrete and sand. If there is a leak inland the gas could end up back in the atmosphere, but there is no conclusive research about what will happen if it escapes in the water,” said Fotis Pagoulatos, a naval engineer in Athens. “The consensus for now is that pollution risk at sea from leaked CO2 is low.”
. . .
While no contracts have been signed, Kalogiratos said Capital Product Partners is in talks with a number of European emitters as well as big energy companies in Japan and South Korea.
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(Note: the online version of the story has the date January 31, 2024, and has the title “A New Solution for CO2 Emissions: Bury Them at Sea.” The online version of the article says that the title of the print version is “Ship Operators Offer to Bury Emissions” but my copy of the print version has the title “Ship Operators Offer to Bury Emissions at Sea.”)