Français | English
Search :
Cryostar, manufacturer of cryogenic equipment. Proposes cryogenic pumps, centrifugal compressor for Industrial Gas, Natural Gas (LNG), Hydrocarbons and Clean Energy Cryostar, turboexpanders
Clean Energy
LNG Transport & Terminals
Process Machinery
Industrial gas products
Hydrocarbons products / Turbo-expanders
Liquid expanders
Centrifugal blowers
The Cryostar Group
Media Centre
Eco Responsible
Home Page > Process Machinery > Hydrocarbons products / Turbo-expanders > Turbo-expanders


Turbo-expanders for natural gas processing and the petrochemical industry


  Cryostar, turboexpandersCryostar is a pioneer in active magnetic bearings expanders:
Cryostar was the first company to develop an expander equipped with active magnetic bearings (AMB) in 1988.
Cryostar was the first company to supply 8 AMB expanders for natural gas processing (offshore conditions in the North Sea environment)
Cryostar has the largest base of expanders equipped with AMB in operation in the world
Proven expertise of applications: dew point control, ethane recovery, NGL recovery, LNG production and project with high amount of liquid at expander outlet.
Full range of oil lubricated bearings turbo-expanders with different shaft sealing systems
Capability to reply to the applications of petrochemical industry such as ethylene plants, CO processing, etc.
A complete range from 100 kW up to 12 000 kW with inlet pressure up to 150 bar and inlet temperature down to -196°C as standard
A company certified ISO 9001/2000. Cryostar was one the first companies to be ISO certified in its field of activity.
Cryostar uses the latest technologies to design its turbo-expander. Each wheel is unique and completely optimised for its designated project. The company also employs final element analysis, computational fluid dynamics, 3D modelling, and laser holographic testing.
Cryostar combines its qualified service department with a design focus towards minimal downtime and high availability, resulting in maximum savings for your plant operations.

Oil brake turbo-expanders
The oil brake is provided in case the expander cold production is relatively low (< 100 kW) and when the process gas does not require re-compression.

Compressor-loaded turbo-expanders
The compressor-loaded turbo-expander is the more common arrangement. After separation of the heavy liquid hydrocarbon components in a separation drum, the gas is recompressed in the machine’s centrifugal compressor . The machine consists in a single shaft unit with one expander wheel and one compressor wheel mounted in opposition.

Generator-loaded turbo-expanders
The generator-loaded turbo-expander is also often used in the natural gas treatment plant or in ethylene plants. The generator brakes the expansion turbine. It is connected to the grid and allows electricity production. Different designs are available, including either planetary gearbox or parallel shaft gearbox, with the option of an asynchronous or a synchronous generator.


© Cryostar 2009 | Contact | Legal Informations | Sitemap
CRYOSTAR - Manufacturer of cryogenic equipment for Industrial Gas, Natural Gas (LNG), Hydrocarbons and Clean Energy