| Carbon capture and storage


existing pipeline which can be repurposed for the transport of captured CO2


.


In October, Eni announced that it had successfully secured the UK government’s commitment and funding for the granting of an economic licence for the Liverpool Bay CO2


transport and storage project,


a key part of the HyNet CCS cluster. The Killingholme Low Carbon Power announcement followed Uniper’s recent purchase of land next to its existing power station site at Killingholme.


The land, purchased from C.GEN Killingholme Ltd, comes with planning consent for the development of a new state-of-the-art CCGT power station (formerly known as the North Killingholme Power Project).


The plan for the Killingholme Low Carbon Power project, is to develop and commission the consented CCGT power station on the newly purchased land, “so that it’s capable of responding quickly to increases in demand for electricity.” A carbon capture facility would be developed alongside the consented CCGT power station, subject to receiving separate planning approval and once the design of the CCS scheme has been agreed. This would include the CO2


pipeline


transport route, and the permanent offshore storage location for the captured CO2


.


Submission of a planning application for the CCS part of the project is envisaged for later in 2025. Both the new CCGT power station and proposed carbon capture system could be delivered by 2030, says Uniper, potentially contributing towards the UK


government’s ambition for Great Britain to achieve a clean power system by that date, “whilst providing a secure source of electricity when needed.” The next step for the Killingholme Low Carbon Power project will be to develop a detailed design to determine the exact technology that could be installed at the new power station. The project is at an early stage, notes Uniper, and final capacity will be determined following completion of FEED studies, which are due to commence during 2025, but it will be at least 470 MW. In February 2024 Uniper awarded process design package (PDP) contracts to Technip Energies and to Aker Carbon Capture for post combustion carbon capture technology to be retrofitted on up to three units at its 3 x GT26 Grain combined cycle power plant in the south east of England, with both companies submitting design studies in a competition to engineer the carbon capture design. This would enable the project to move to the front end engineering and design (FEED) phase, ahead of a final investment decision. However, In the absence of a “clear pathway”


for CCS projects relying on non-pipeline CO2 transport, Uniper took the decision to pause progression of the Grain carbon capture project. Nevertheless, it says it will continue to work in collaboration with specialist transport and storage companies to identify the best transport solution that could safely deliver captured CO2


from Grain


to a permanent storage location offshore. It has been proposed that captured CO2


from power plants in the Medway region of the UK (eg,


Foreground of image shows potential development site of the proposed Killingholme Low Carbon Power project. Source: Uniper


Grain) could be transported by shuttle tankers for sequestration in the depleted Camelot gas field, in the UK sector of the southern North Sea, about 30 km off the coast of Norfolk (a scheme known as the Medway Hub Camelot CCS project). This was initially to have been a 50:50 joint venture of Synergia and Wintershall Dea, but in September 2024 Harbour Energy acquired Wintershall Dea and decided to withdraw from Medway Hub Camelot, as part of a rationalisation of its CCS project portfolio. Synergia’s interest in the project has reverted to 100% and it is seeking a replacement joint venture partner. There are several other planned CCGT+CCS projects at various stages of development in the UK, including Net Zero Teesside Power (bp and Equinor), see pp 24-25, Peterhead Low Carbon CCGT (SSE Thermal and Equinor), Keadby 3 (SSE Thermal and Equinor) and Immingham CHP (VPI)).


Carbon capture without the columns


Aramco has signed a collaboration agreement with Carbon Clean and Samsung E&A to demonstrate a new compact carbon capture technology, which avoids the columns typical of conventional CCS systems by using rotating packed beds.


The demonstration will see deployment of Carbon Clean’s CycloneCC technology to capture CO2


from natural gas fuelled turbine exhaust streams containing approximately 4% carbon dioxide.


The modular CycloneCC unit has a 50% smaller footprint compared to conventional carbon capture processes, says Carbon Clean, and is estimated to be able to reduce the total installed cost of carbon capture systems by up to 50% compared to conventional systems, while maintaining high performance and process efficiency even at low CO2


concentrations.


Rotating packed bed (source: Carbon Clean)


Samsung E&A will be responsible for engineering, procurement and construction of the capture system, which will be installed on a sales gas compressor turbine exhaust gas stack, providing critical data on performance under real-world conditions.


CycloneCC’s high performance – even at low CO2


concentrations – is achieved through the combination of rotating packed beds with Carbon Clean’s proprietary APBS-CDRMax solvent. Aniruddha Sharma, Chair and CEO of Carbon Clean, said: “This first-of-a-kind deployment capturing very low concentrations of CO2


is a


key milestone in scaling up and commercialising CycloneCC. Its compact, modular design should be easily integrated with gas turbines, delivering


high performance carbon capture in an industrial setting where space is typically limited.” In October 2024, Carbon Clean announced the launch of its “fully columnless” CycloneCC C1 series, available for CO2


concentrations in


the range 3% to 20%, capturing up to 100 000 tonnes of CO2


per year.


Rotating Packed Bed (RPB) technology replaces every column used in conventional carbon capture plants, achieving a height reduction of 70%. Carbon Clean’ says its APBS-CDRMax solvent achieves substantial OpEx savings, outperforming industry-standard solvents. APBS- CDRMax lowers energy demand by 10-25%, reduces corrosion by a factor of 20, decreases degradation by a factor of 10, and has a lifespan that is five times longer than conventional solvents, according to Carbon Clean. In November 2024 Carbon Clean announced that a strategic supplier framework agreement had been signed with Julius Montz, a German company owned by Koch Engineered Solutions, for the packing technology to be employed in the rotating packed beds, with the patented metal packing to be manufactured by Montz in Hilden, Germany.


The centrifugal force generated by the RPB intensifies the absorption of emitted CO2


,


CycloneCC: columnless carbon capture technology (source: Carbon Clean)


amplifying the performance of the solvent and the metal packing, says Carbon Clean.


www.modernpowersystems.com | January/February 2025 | 29


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