Air Liquide Apps That Change Everything
- 01. Core industry applications
- 02. High-value sector use cases
- 03. Mobility and energy transition
- 04. Illustrative capabilities table
- 05. Concrete numbers and historical context
- 06. How Air Liquide delivers (technical pathways)
- 07. Representative statistics and quoted perspectives
- 08. Practical implementation considerations
- 09. Market segments and examples
- 10. Decision checklist for buyers
- 11. Example project snapshot (illustrative)
- 12. Data table - illustrative supply options
- 13. Closing operational notes
Air Liquide supplies industrial gases and related technologies across industries-chief applications include large-scale oxygen, nitrogen, argon, hydrogen and carbon monoxide delivery for metals, chemicals, refining, electronics, and hydrogen mobility, each tailored by on-site plants, pipelines and specialty equipment to specific process needs.
Core industry applications
Air Liquide's Large Industries arm delivers bulk gases and energy services that directly support industrial processes such as steelmaking, refining, chemical synthesis and glass manufacture through onsite Air Separation Units and pipeline networks providing oxygen, nitrogen and argon at scale.
The Group also supplies hydrogen made by steam methane reforming or electrolysis for fuel processing, desulfurization and low-carbon initiatives, and develops cogeneration and carbon capture technologies for energy optimization and emissions reduction.
High-value sector use cases
In metallurgy, high-purity oxygen is injected into blast furnaces and basic oxygen furnaces to raise productivity and lower CO₂ intensity, with documented industry deployments since the 1950s that scaled oxygen enrichment across global steel plants.
In the refining sector, hydrogen supplied at merchant scale enables hydrodesulfurization and hydrocracking; demand for merchant hydrogen rose notably after stricter fuel-sulfur limits in the 2000s and continues to grow as refineries shift feedstocks.
For the chemicals industry, gases such as hydrogen and carbon monoxide are core feedstocks for synthesis routes (e.g., methanol, Fischer-Tropsch, synthesis gas derivatives), while nitrogen is used widely for inerting and blanketing to prevent oxidation or explosions.
The electronics sector depends on ultra-high-purity nitrogen, argon and specialty gases for semiconductor fabs, flat panels and solar cell production, where contamination control at parts-per-billion levels is mandatory; Air Liquide's electronics business supplies these materials and associated services.
Mobility and energy transition
Air Liquide has commercialized hydrogen fueling stations for vehicles and buses, and supplies large-scale hydrogen for industrial customers while investing in electrolyser technology to deliver low- or zero-carbon hydrogen for mobility and industry.
Cogeneration and Cryocap™ carbon-capture systems are used at scale in several large installations to recover waste heat, generate steam and electricity, and capture CO₂ from process streams, reducing site emissions and improving energy efficiency.
Illustrative capabilities table
| Application | Main gases/tech | Primary benefit | Common customer |
|---|---|---|---|
| Steelmaking | Oxygen, Hydrogen, ASU, pipeline | Higher throughput, lower coke use, CO₂ reduction | Integrated steel mills |
| Refining | Hydrogen, Nitrogen, Steam | Desulfurization, yield conversion | Refineries |
| Chemicals | H₂, CO, N₂, ASU | Feedstocks for synthesis, process safety | Chemical plants |
| Electronics | Ultra-pure N₂, Ar, specialty gases | Contamination control, yield protection | Semiconductor fabs |
| Mobility | Hydrogen, dispersion systems | Low-emission transport refuelling | Bus fleets, hydrogen cars |
Concrete numbers and historical context
Air Liquide operates in more than 59 countries with roughly 65,000 employees and serves over 4 million customers and patients globally, statistics that reflect the Group's scale in industrial and healthcare markets as of its April 2026 corporate summary.
Historically, Air Liquide scaled Air Separation Units (ASUs) in the mid-20th century to meet steel and chemical demand, and by the 2000s had built pipeline networks that today deliver bulk oxygen and nitrogen directly to customer sites, reducing truck deliveries and steadying supply for continuous plants.
Since circa 2015, the company publicly accelerated hydrogen investments-both merchant hydrogen from SMR plants and electrolysis projects-anticipating stricter emission rules and industrial decarbonization targets, which has led to multi-year partnerships with energy and industrial customers.
How Air Liquide delivers (technical pathways)
- Air Separation Units (ASU): compress, liquefy and distill air to separate N₂, O₂, Ar-used where large continuous supplies are required. ASU installations are typically colocated with large plants or connected by pipelines.
- Steam Methane Reforming (SMR): produces hydrogen and carbon monoxide from natural gas, often paired with heat recovery and cogeneration; common for merchant hydrogen supply since the 1970s.
- Electrolysis: produces low-carbon hydrogen when powered by renewable electricity; deployed at increasing scale since the late 2010s as electrolysers have fallen in cost.
- Cogeneration and Cryogenic capture: combined heat-and-power plus cryogenic distillation or amine-based capture for CO₂ management; used to improve plant energy efficiency and reduce emissions.
Representative statistics and quoted perspectives
In a corporate overview, Air Liquide states it "serves more than 4 million customers and patients worldwide," a claim used to signal both merchant and industrial reach across healthcare and industry markets.
Industry reporting shows that oxygen injection and hydrogen substitution in steelmaking can reduce CO₂ intensity by up to 10-30% at retrofit scale depending on process and carbon accounting choices; such figures drive uptake of industrial gas solutions in heavy industry.
Practical implementation considerations
- On-site vs delivered: On-site ASUs and SMRs suit continuous heavy users; delivered cryogenic liquid or tube trailers suit smaller or variable-demand customers-Air Liquide offers both delivery channels.
- Purity and spec: Electronics and pharmaceutical customers require ultra-high-purity gases with contamination specs in parts-per-billion, so value-added services (filtration, monitoring) are bundled with supply contracts.
- Energy and emissions: Projects often include cogeneration or electrified electrolysis plus carbon capture to meet customer decarbonization goals and regulatory drivers.
Market segments and examples
The Large Industries business serves sectors where gases are integral to core processes: steel (oxygen for furnaces), refining (hydrogen for desulfurization), chemicals (synthesis gas feedstocks), glass (oxygen-enriched combustion) and energy (steam, electricity via cogeneration).
Air Liquide's Industrial Merchant and Healthcare activities supply packaged and bulk gases to SMEs, hospitals and laboratories, enabling applications such as food preservation with CO₂, medical oxygen therapy, and weld gases for fabrication shops.
Decision checklist for buyers
- Estimate demand profile (continuous high-volume vs intermittent use) to decide ASU/SMR vs delivered cryogenic supply; match demand profile to capital vs operating cost.
- Define purity and certification needs (electronics/pharma vs general industry) to choose filtration and monitoring services.
- Assess decarbonization targets and regulatory drivers to evaluate low-carbon hydrogen, cogeneration and carbon-capture options.
- Design supply security: pipeline connection, onsite redundancy or contract storage for uninterrupted production.
"The Large Industries business line supplies gas and energy solutions to customers in the metals, chemicals, refining and energy industries... to improve process efficiency and to make their plants more environmentally friendly,"-Air Liquide corporate materials describing their Large Industries focus.
Example project snapshot (illustrative)
Project: Steel mill oxygen retrofit, completed Q4 2019-installation of a new ASU and oxygen pipeline reduced coke consumption by ~12% and site CO₂ emissions intensity by an estimated 9% in year one; capital works included a 1200 t/day ASU and a 6 km dedicated pipeline to the furnaces, delivered under a 15-year supply contract.
Data table - illustrative supply options
| Supply mode | Typical scale | Lead time | Best for |
|---|---|---|---|
| On-site ASU | 100s-1000s t/day | 12-36 months | Continuous high-volume users |
| SMR plant | 10s-100s t/day H₂ | 18-36 months | Refineries, chemical complexes |
| Electrolyser | 1-100 MW (H₂) | 12-30 months | Low-carbon hydrogen projects |
| Delivered cryogenic | 0.1-50 t/day | Days-weeks | Intermittent or small users |
Closing operational notes
Buyers should evaluate lifetime cost (CapEx vs OpEx), integration complexity, safety and emissions; contracting often bundles gas supply with monitoring, maintenance and emergency response to ensure continuity of critical processes-elements Air Liquide routinely offers to industrial customers.
Everything you need to know about Air Liquide Apps That Change Everything
[What gases does Air Liquide supply]?
Air Liquide supplies oxygen, nitrogen, argon, hydrogen, carbon monoxide, carbon dioxide and many specialty and high-purity mixtures for industrial, electronics and healthcare applications delivered as gases, liquids, via pipelines or with on-site generation.
[How is hydrogen produced for industry]?
Hydrogen is produced by Steam Methane Reforming (SMR) using natural gas, and increasingly by water electrolysis using renewable electricity to produce low-carbon hydrogen; both routes are part of Air Liquide's portfolio depending on customer carbon requirements.
[Can Air Liquide capture CO₂ from plants]?
Yes-Air Liquide uses cryogenic distillation, membrane separation and amine processing (examples include Cryocap™) to capture CO₂ from industrial streams and to support customer decarbonization projects.
[Which industries use ultra-pure gases]?
The electronics and semiconductor industries, as well as pharmaceutical manufacturing, require ultra-pure gases (parts-per-billion impurity levels), and Air Liquide supplies gases and purification services to meet those specifications.
[Where does Air Liquide operate]?
Air Liquide is present in dozens of countries worldwide (the company reports operations in about 59 countries) and maintains plants, pipelines and commercial operations to serve global industrial and healthcare markets.