Skip to main content
Air Liquide
Air Liquide worldwide
Please select

Engineering & Construction


Large projects


Our technologies

Leading innovative technologies to address the industry challenges

Air Liquide Engineering & Construction has always been committed to innovation by enhancing its comprehensive portfolio of proprietary technologies to meet customers’ requirements and exceed their expectations for safe, reliable and competitive solutions. Our customers can take advantage of our customizable technologies and leading engineering services to gain a competitive advantage across a broad range of industrial processing operations. Air Liquide Engineering & Construction is a premium strategic partner and a world leader in engineering and construction, helping to address the challenges of today’s ever-changing market place.

Standard plants

Depending on our customer’s needs, we can tailor a design to their exact specifications or propose a Standard Plant.

These are highly-packaged, modular, skidded units, easily integrated into existing or future industrial plants.

Our portfolio of Standard Plants technologies includes:

  • HYOS™ R Hydrogen Generation System
  • Nitrogen Generation Systems
  • Sigma Standard Air Separation Units
  • Vacuum Swing Adsorption
  • Yango™ Standard Air Separation Unit

Standard plants


Separation of gases using Cryogenics applies to a range of molecules with a boiling point from -40°C to -270°C.

Air Liquide Engineering & Construction developed a range of industry-leading solutions, designed to optimise capital expenditure (CAPEX) or operational expenditure (OPEX) for customers of any size.

Our portfolio of Cryogenics technologies includes:

  • CO Cold Box – Syngas Separation and Purification
  • Cryocap™ H2 – Cryogenic CO2 Separation
  • Cryocap™ Oxy - Cryogenic CO2 Separation for Oxy-combustion
  • Helium Recovery and Liquefaction
  • Hydrogen, Nitrogen and Argon Recovery
  • Large Air Separation Unit
  • Liquid Nitrogen Wash


Hydrogen is used in oil refineries, chemicals plants, and in clean transport solutions.

Our plants meet the needs of large, medium, and small customers with a wide range of possible steam export rates.

Our portfolio of Hydrogen technologies includes:

  • Pressure Swing Adsorption (PSA) - Hydrogen
  • SMR-X™ - Zero Steam Hydrogen Production
  • Steam Methane Reforming - Hydrogen Production

Engineering and Construction Hydrogen


Using reliable and robust technology, a wide range of low-quality hydrocarbon feedstocks, such as viscous oil, can be transformed into higher-value syngas.

Composed of hydrogen and carbon monoxide, syngas has applications in many industries.

Our portfolio of Syngas technologies includes:

  • Autothermal Reforming (ATR) - Syngas Generation
  • Gas POX - Natural Gas Partial Oxidation
  • Lurgi FBDB™ - Fixed Bed Dry Bottom Gasification
  • Lurgi MPG™ - Multi-Purpose Gasifier
  • Rectisol™ - Syngas Purification
  • Steam Methane Reforming (SMR) - Syngas Production


Using our expertise in oxidation, hydrogenation and extraction techniques, we provide technology to produce or to separate valuable chemicals from a variety of feedstock.

The end products of these processes are used in various petrochemical processes such as polymerization.

Our portfolio of Petrochemicals technologies includes:

  • Acrylates
  • Acrylic Acid
  • Butadiene Extraction
  • Distapex™
  • G2G™ - Gas-to-Gasoline
  • Low Pressure (LP) Methanol
  • Lurgi MegaMethanol™
  • Lurgi MTP™ - Methanol-to-Propylene

Natural gas treatment

Raw natural gas needs to be treated to meet pipeline and liquefaction specifications.

We offer a full range of technologies to remove any kind of contaminant, offering clients a reliable and cost-effective solution tailored to their needs.

Our portfolio of Natural Gas Treatment technologies includes:

  • Acid Gas Removal
  • Natural Gas Liquids Recovery
  • Nitrogen Rejection Unit

Natural gas treatment


Hydrogen sulphide removed in the Natural Gas Cleaning or Crude Oil Refining can be converted into pure sulfur product using proven Claus technology.

Over the years, we have developed a highly efficient and reliable burner system and further technologies to boost this traditional process, making it more efficient, less costly and more environmentally friendly.

Our portfolio of Sulfur technologies includes:

  • Emission-Free Sulfur Recovery Unit
  • OxyClaus™ Sulfur Recovery Unit
  • Sulfur Recovery Unit

Liquefied Natural Gas - LNG

As an expert in cryogenics and a pioneer in the field of Liquefied Natural Gas, we have extensive experience in equipping plants of all sizes with LNG technology.

Our modularized designs are easy to construct and our robust liquefaction technology helps reduce costs.

Our portfolio of LNG technologies includes:

  • Boil-Off Gas Reliquefaction
  • Liquefin™ - Dual Mixed Refrigerant Technology
  • Smartfin™ - Single Mixed Refrigerant Technology
  • Turbofin™ - Nitrogen Refrigerant Technology



Oleochemical technologies serve multiple industries, including the chemical, food and energy sectors.

Our portfolio covers the whole value chain from seed to final product, with processes optimized for rapidity, safety or capital expenditure (CAPEX).

Our portfolio of Oleochemicals technologies includes:

  • Bio Propylene Glycol
  • Fatty Acid
  • Fatty Alcohol
  • Glycerin Distillation and Bleaching
  • LP3™ - Low Pressure Fatty Alcohol Production
  • Lurgi Biodiesel
  • Natural Oil Refining
  • Sliding Cell Extractor - Seed Crushing and Extraction
  • Sorbitol Production


Our full suite of technologies and services

Air Liquide Engineering & Construction services many industries with customizable technologies. We can offer complete solutions, from feasibility study to handover of the completed facility with all utilities connected. We are flexible in scope and able to provide optimization studies, licensing packages, integrated engineering and procurement (EP) as well as turnkey packages (including engineering, procurement, construction and management).

For further information on Air Liquide Engineering & Construction’ comprehensive technology portfolio and services, visit