What we do

Engineering & Construction
Delivering innovation for a sustainable world

Air Liquide Engineering & Construction builds the Group’s production units - mainly air gas separation and renewable and low-carbon hydrogen production units - and supplies external customers with efficient, sustainable, customized technology and process solutions. 

With more than a century of technological expertise in industrial gas production, Air Liquide Engineering & Construction is a leader in its industry, stepping up to the urgent challenge of climate change and the energy transition to create the innovative technological solutions of the future.

We work hand-in-hand with our customers, covering the entire project life cycle, to design the solutions that contribute to the quality of their products and the growth of their business, while optimizing efficiency and reducing the environmental footprint

  • Process technology:
    Licensing engineering services & proprietary equipment

  • High-end engineering & design capabilities

  • Integrated solutions:
    Project management and execution services

Excellence in Engineering, Procurement and Construction

As an experienced international Engineering, Procurement and Construction (EPC) contractor, we are already executing a range of challenging projects, where our hands-on experience provides confidence to our customers. We are committed to providing innovative solutions of the highest quality and reliability that not only help our customers to grow their business, but also move to a low-carbon society.

2700 employees in 18 countries

183 new patents filed in 2023

17 engineering centers and front-end offices

5 manufacturing centers

Committed to sustainability

Air Liquide Engineering & Construction is working actively to help achieve the Group's environmental, societal and governance (ESG) objectives. Drawing on our know-how and innovative technology solutions, Air Liquide Engineering & Construction is working with its customers to reduce their carbon emissions, supporting them in their energy transition and supporting the Group and customers to play their part in creating a low-carbon society.

Safety and quality are key priorities. We ensure that every action we undertake, from initial design through to construction, reflects our goal of ensuring personal safety, and protecting the environment.

To achieve this, we have a diverse team of experts with extensive experience in areas such as process design, detailed engineering, piping and instrumentation and electrical, mechanical and civil engineering as well as health, safety, environment, security and process risk management. 

Delivering innovation for a sustainable future

Air Liquide Engineering & Construction innovates across all areas of its activities, nurturing the inclusion and diversity, growth and entrepreneurial spirit of employees and supporting the technical creativity of its teams to develop unique solutions that make a real difference to our customers. Our technology portfolio is continually expanding as we develop new innovative solutions for our customers that support the development of a low-carbon society.

At our Cryogenic Technology Center in Vitry-sur-Seine (France), innovations related to cryogenic technology topics are developed, tested and demonstrated in an accelerated innovation cycle, thus being ready for early industrialization.

A portfolio of proprietary technology

We  have built a comprehensive portfolio of proprietary technologies to enable us to find new and innovative solutions that meet customer needs.

Applied in a wide range of industries, our technologies produce and make use of low carbon hydrogen, drawing on our expertise in renewable energy and carbon capture, to support the production of lower impact chemicals and fuels.  From our pioneering development of air separation technologies to our renowned Lurgi Methanol to Propylene (MTP™) technology for propylene production, our innovations help optimize our customers' facilities and better integrate their processes.

As a responsible company, we design our technology solutions to be as environmentally-friendly as possible, enabling our customers to reduce the environmental impact of their production facilities.

  • Cryocap™, CO2 cold capture system

    Cryocap™ enables the capture of CO2 released during hydrogen production via a cryogenic process. The first industrial deployment of this technology was made in Port-Jérôme, France, at the largest steam methane reforming hydrogen production unit operated by Air Liquide.

  • The world's largest PEM electrolyzer

    Air Liquide Engineering & Construction contributed to the construction of the world's largest PEM (Proton Exchange Membrane) electrolyzer. Supplied with renewable energy, this unit is now producing up to 8.2 tonnes per day of low-carbon hydrogen in Bécancour, Québec. This way, Air Liquide confirms its commitment to the production of low-carbon hydrogen on an industrial scale and its ability to effectively deploy the related technological solutions.

  • The world’s largest plants for industrial gas production

    We have designed and assembled the largest single train air separation unit ever built. With a total capacity of 5,800 tons of oxygen per day (at mean sea level), the unit will supply industrial gases to the Secunda site for Sasol in South Africa. By 2030, Air Liquide will reduce the CO2 emissions of the plant by 30-40% through the sourcing of 600 MW of renewable energy.

    We have also designed and built units for the global-scale hydrogen production site in Yanbu Industrial City in Saudi Arabia with a total capacity of 340,000 Nm3 per hour.