Liquefied CO2 Cargo Tank System Obtains AiP from Classification Society DNV

Breakthrough Cargo Tank System Transports Liquefied CO2 at Ambient Temperature.

Knutsen NYK Carbon Carriers AS, which is an affiliate of NYK, received approval in principle (AiP) from the Norwegian classification society DNV on April 5 for the PCO2® tank system, which can transport and store liquefied carbon dioxide (CO₂) at ambient temperature.

This is the world’s first AiP for a cargo tank system that can marine transport and store liquefied CO₂ at ambient temperature.

Carbon Capture, Usage and Storage (CCUS) is a technology that can capture and make effective use of the high concentrations of CO₂ emitted by industrial activities.

CCUS

Future expansion of the CCUS value chain* will require larger vessels to maximize transportation efficiency. The concept of the PCO2® tank system is to transport liquefied CO₂ over ambient temperatures (0–10°C) and under high pressure (35–45 bar).

Liquefied CO₂

This makes it possible to transport liquefied CO₂ in larger vessels than vessels that transport it under low or medium pressure, and to reduce costs incurred throughout the CCUS value chain.

Handling Liquefied CO₂

Furthermore, transporting at ambient temperature and high pressure makes it possible to keep the pressure, temperature, and condition of liquefied CO₂ relatively uniform from the transport of liquefied CO₂ to injection into the seabed or underground.

It makes it easier to handle liquefied CO₂ in the CCUS value chain, which also has the advantage of reducing costs throughout the CCUS value chain.