Høglund Marine Solutions and HB Hunte Engineering have developed a breakthrough tank concept for CO2 transportation, based on existing, proven technology.

The new system more than doubles current vessel cargo capacity to transport liquified CO2, representing a vital step forward in the development of maritime transport solutions for the expanding carbon capture and storage (CCS) market, which will require maritime CO2 transport to scale up rapidly.

Høglund and HB Hunte’s transportation solution uses a unique bilobe tank with a capacity of 8000cbm, drawing on Cargo Handling System (CHS) and tank designs that they have previously proven in LNG, LPG and other sectors.

The development of this unique solution came following a proof of concept request from gas technology experts.

Høglund said the solution is readily available for use in existing tanker designs and it more than doubles the transportation capacity of liquid CO2 over current vessel capacity, without the size, weight and stability concerns that would have come from a higher capacity “monolobe” design.

The tank configuration has a direct and positive impact for the use of different alternative material and reasonable fabrication processes while complying with IGC Code and conventional rule.

This allowed the production of a solution which is substantially lower cost and risk than conventional very large diameter cylindrical type offering the same capacity, Høglund said.

Currently, the maximum capacity for transporting liquified CO2 is approximately 3600cbm, or roughly 1770 tonnes in dedicated CO2 tankers predominantly with specialist operators.

However, as CCS chains develop, maritime transportation capacity needs to increase significantly, requiring innovation in tank design and cargo handling systems.

Commenting on this new solution, David Gunaseelan, Vice-President of Sales and Marketing at Høglund, said, “With the global economy facing more pressure to reduce its carbon emissions, we must develop the technology for a viable CCS chain, and new ways of solving the complex challenges that come with upscaling CO2 transportation.”