Air Liquide Starts Up Industrial-Scale Cryocap CO2 Capture Pilot at Holcim's CaptureLab for Cement Decarbonisation

Air Liquide has announced the start-up of its first industrial-scale pilot unit specifically designed for the cement sector, based on its proprietary Cryocap FG flue gas technology, located at Holcim's CaptureLab in France, the world's first carbon capture test platform for the cement industry. The pilot unit, with a capacity of 3,000 standard cubic metres per hour of flue gas, introduces key technologies for the pre-treatment of flue gas and preconcentration of carbon dioxide prior to final purification, addressing one of the primary technical challenges in deploying carbon capture at commercial scale in hard-to-abate industrial sectors. The scale-up validated by this pilot represents a significant milestone for the roll-out of Cryocap technology across an industry where most emissions result from the chemical breakdown of limestone rather than energy use, making it one of the most structurally difficult sectors to decarbonise.

 

The Technical Challenge of Cement Decarbonisation

 

Cement production is among the hardest industrial processes to decarbonise because approximately 60 percent of its carbon dioxide emissions arise from the calcination of limestone, a chemical reaction that produces carbon dioxide as an unavoidable byproduct regardless of the energy source used to drive the process. This process-related emission source cannot be eliminated through electrification, fuel switching or energy efficiency improvements alone, making carbon capture and storage the only currently available technology pathway for deep decarbonisation of cement production. The fundamental nature of this challenge distinguishes cement from other hard-to-abate sectors where alternative fuels or electrification can address the majority of emissions, creating urgent demand for proven carbon capture solutions that can be deployed at cement plant scale.

The Cryocap FG technology addresses the specific flue gas characteristics of cement production, which differ significantly from other industrial processes and require specialised pre-treatment before the carbon dioxide can be efficiently captured and purified. Cement flue gas typically contains higher concentrations of impurities including sulphur oxides, nitrogen oxides and particulates than the hydrogen-production flue gas at Port-Jérôme where Air Liquide has operated Cryocap H2 commercially for a decade. The pilot unit's pre-treatment and preconcentration capabilities are therefore critical enabling steps that must be validated at industrial scale before larger commercial carbon capture systems can be confidently designed and financed.

 

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The Modular Design and Its Commercial Implications

 

The Cryocap FG pilot unit has been designed with a modular approach that allows easy transport and installation, enabling relocation to other industrial sites after its initial phase at Holcim's CaptureLab. This portability is commercially significant because it allows the pilot to validate the technology across different cement plant configurations, feedstock types and operational conditions without requiring a separate fixed installation at each test site. Modular carbon capture systems also carry implications for the commercial deployment model, as they may enable staged capacity additions, lease-based rather than purely capex-funded deployment and more flexible integration with different plant layouts across a diverse global cement industry.

Armelle Levieux, member of Air Liquide's Executive Committee with responsibility for Innovation and Technology activities, said the commission of the industrial-scale pilot at Holcim's CaptureLab marks a significant step forward in the decarbonisation of the broader cement industry. She emphasised Air Liquide's ability to scale proprietary technologies from laboratory research to industrial-scale applications, positioning the Cryocap deployment as evidence of genuine technological leadership rather than developmental-stage capability. The partnership with Holcim, which operates CaptureLab as an open testing facility for the cement sector, provides Air Liquide with access to genuine cement industry operational conditions and the collaborative environment needed to validate technology under commercially representative conditions.

 

Broader Context for Industrial Carbon Capture in Hard-to-Abate Sectors

 

The Air Liquide and Holcim collaboration sits within a rapidly developing European industrial carbon capture ecosystem, where the EU Innovation Fund, Carbon Contracts for Difference and the development of dedicated CO2 transport and storage infrastructure are progressively improving the commercial viability of carbon capture deployment across cement, steel, chemicals and other hard-to-abate sectors. The European cement industry faces increasing pressure from the EU Emissions Trading System, where free allowance allocations are being phased down and carbon prices create direct financial incentives to invest in emissions reduction regardless of the technical difficulty. For cement producers operating in European markets, the development of proven carbon capture solutions that can be deployed at their existing facilities is therefore a commercial imperative rather than a voluntary sustainability initiative.

Air Liquide's decade of commercial experience with Cryocap H2 at Port-Jérôme provides a credible operational track record that strengthens investor and customer confidence in the technology's reliability and performance at scale. The transition from hydrogen production flue gas to cement flue gas represents a meaningful technical extension of the Cryocap platform, and the industrial-scale pilot is designed to generate the performance data and operational learnings needed to support the engineering design of first commercial cement carbon capture installations. Building this evidence base at pilot scale is essential for securing the project finance and insurance coverage that large-scale industrial carbon capture projects require.

 

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Outlook for Cryocap Deployment Across the Cement Industry

 

Whether the Cryocap FG technology can progress from the current pilot phase to commercial deployments at cement plants across Europe and globally will depend on the performance results generated at Holcim's CaptureLab, the economics of the technology at commercial scale and the availability of carbon dioxide transport and storage infrastructure in markets where cement plants are located. Sustained successful pilot operation generating reliable performance data would provide the foundation for Air Liquide and Holcim to advance toward first commercial projects, potentially supported by EU Innovation Fund grants or national industrial decarbonisation programmes. The next cement and lime projects referenced in Air Liquide's announcement suggest a commercial pipeline is already being developed in parallel with the pilot validation.

The global cement industry produces approximately 4 billion tonnes of cement annually and accounts for around 8 percent of global carbon dioxide emissions, making it one of the largest industrial emission sources and a critical target for climate mitigation. If Cryocap FG can be commercially validated and deployed at scale across a significant portion of global cement production capacity, the climate impact would be substantial. The combination of proven cryogenic technology heritage, industrial-scale pilot validation and a partnership with the world's largest cement producer creates a credible pathway for Air Liquide to establish a leading position in the industrial carbon capture market for one of the most challenging and important decarbonisation opportunities in the global economy.

 

Source: Air Liquide