Skip to content
Le Gaz Integral

Gas treatment & sour gas processes

Sweetening, sulphur recovery, tail gas treatment and gas production units for refineries and natural gas facilities

Le Gaz Integral covers the full life of a gas treatment unit: conceptual design, studies, procurement, construction, pre-commissioning, commissioning, start-up supervision and training of operating crews.

We work for petroleum refineries and natural gas treatment facilities, to the standards of the most demanding operators, such as Total, ExxonMobil, Chevron and Lukoil. Solutions are built on our own proprietary technologies and on those of partners such as Shell, BASF and Dow.

Gas treatment and conditioning

  • Separation
  • Compression
  • Dehydration
  • Sweetening (H₂S, CO₂) and CO₂ capture
  • Liquids fractionation and distillation
  • Contaminant removal (tar, NH₃, HCl, Hg…)
  • LPG recovery and hydrocarbon dew point control

Processes for sour gases

  • Sweetening: amines, fixed bed, caustic
  • Sulferox®: authorised licensor from Shell – OIP
  • Sulphur recovery units (SRU): modified Claus processes
  • Shell Paques® with melter / filter
  • SRU tail gas treatment, 95 to 99.9+ % recovery
  • Liquid sulphur degassing
  • Sulphur solidification
  • Sour water strippers: low-pressure and double-stage
  • Ammonium thiosulphate (ATS) production

Gas production

  • Coal gasification

    Our own low-pressure process for town gas and syngas – more than 300 units built, including 15 in China

  • Oil gasification

    High-calorific gas from fuel oils or high-sulphur residues – more than 70 units built

  • Steam reforming

    Methane and other hydrocarbons converted to hydrogen and carbon monoxide over a nickel catalyst

Pilot tests validate target performance against air emission standards and fix CAPEX and OPEX before investment.

Planning a gas treatment, sulphur recovery, chemical or energy unit?

Our process and project teams in Switzerland and France will review your requirements with you.

Discuss your project