ProcessEngineeringContractorsince 1919
Process engineering and turnkey units for the energy and chemical industries
Engineering, execution, commissioning and operation of industrial units

- years of plant engineering
- 107
- projects delivered
- 500+
- countries with references
- 30+
- engineering hours on our largest projects
- 150,000
- man-hours of site works on our largest projects
- 350,000
- reportable accidents in 30 years
- 0
What we deliver
From process licence and basic engineering to lump-sum turnkey units and long-term operation
Gas treatment & sour gas
Sweetening, sulphur recovery, tail gas treatment and gas production units for refineries and natural gas facilities
Learn moreProcess chemistry
EPC services for chemical transformation processes, from needs assessment to start-up and operator training
Learn moreWaste-to-energy
Gasification of alternative feedstocks and biomass cogeneration, from concept studies to turnkey delivery
Learn moreEngineering services
From licensing and basic engineering to package supply, lump-sum turnkey delivery and life-cycle support
Learn moreFinancing & operations
Project financing support, then operation and maintenance of new or co-financed units
Learn more
Selected projects
Lump-sum turnkeyOMV Petrom
Sulphur recovery and tail gas treatment unit
- Site
- Brazi, Romania
- Capacity
- 35 t/day of sulphur
Lump-sum turnkeyIndustrial client
Biomass cogeneration unit
- Site
- France
- Capacity
- 25 MW
Lump-sum turnkeyTKG
Ammonium thiosulphate (ATS) production unit
- Site
- Geleen, Netherlands
- Capacity
- 128,500 t/year

The Group
More than a century of plant engineering
Le Gaz Integral provides engineering services and has been a contractor for the oil and gas industry since 1919. With more than 500 project references worldwide, we offer a portfolio of proven technologies and the management of complex projects.

- ISO 9001:2015 Quality management
- ISO 45001:2018 Occupational health & safety
They trust us
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.






















