KNCC Wins AiP for Liquefied CO2 Carrier Tank System

KNCC’s concept tank system aims to scale transport of LCO2 by pressurising carbon dioxide (PCO2) at high (35-45 bar) pressure and ambient temperatures in the range of 0-10°C.

The PCO2 concept is based on a cylinder-type CO2 containment system applying principles used in compressed natural gas transportation. The CO2 is stored in bundles of vertically stacked small-diameter pressure cylinders, rather than large cylindrical tanks.

“KNCC is pleased to have reached an important milestone in the commercial and technical development of our company,” said KNCC chief executive Anders Lepsøe. “KNCC is now prepared to take the next step with the PCO2 technology into this emerging shipping segment.”

By focusing on the transport of liquefied CO2 under high pressure at roughly ambient temperatures, the PCO2 concept looks to significantly scale potential transport volumes compared with existing designs. In addition, the concept aims to maintain a relatively uniform product across the LCO2 transport chain, in terms of pressure, temperature and state, from capture through transport, to offshore injection.

The PCO2 concept has been reviewed under the IGC code, DNV rules for Gas Carriers Pt.5 Ch. 7 and Compressed natural gas tankers, Pt.5 Ch.8, and will result in the DNV class notation Tanker for CO2. An approval in principle is an independent assessment of a concept within an agreed framework, confirming the design is feasible, and no significant obstacles exist to prevent the concept from being realised.