Turboexpanders

Impeller turbine

Atlas Copco Gas and Process radial inflow turbines (turboexpanders) offer high efficiency, robust construction and extremely reliable performance that have proven an ideal solution in thousands of applications around the world.

In many applications across a range of industries, an expander’s isentropic efficiency is key to higher productivity.

In processes such as air separation for industrial gases and the extraction of natural gas liquids (NGLs), higher isentropic efficiency translates into greater cooling power. This means higher product yields and lower energy costs.

For power generation applications, higher isentropic efficiency produces more power from the same resource, creating greater returns for geothermal, waste heat, and pressure letdown power plants.

By employing advanced computational-fluid dynamics, finite element analysis and proven impeller designs, Atlas Copco turboexpanders provide high efficiency targeted at your specific process.

Contact our Atlas Copco Turboexpander specialists to find out more:

Rasmus Rubycz
Technology Scout
 rasmus.rubycz@de.atlascopco.com

Joe Lillard
Technology Manager
 joseph.lillard@us.atlascopco.com

Full Process Control

In many processes, actual turbine operating conditions vary from their original design points. Inlet pressure, flow rate, gas molecular weight and temperature are all subject to change depending on the specific application.

Our turboexpanders incorporate Variable Inlet Guide Vanes (IGVs) to produce optimal flow patterns and give precise continuous control across the full range of operation. IGVs deliver higher efficiency and boost performance when flow levels drop to as low as 10% of the design point or up to 150% above it.

Our expanders are available in compressor-loaded, generator-loaded and hydraulic brake-loaded combinations. They can also be integrated with an integrally-geared compressor in one highly efficient and compact unit called a compander.

Companders drive applications such as onboard LNG-reliquefaction, energy generation from excess gases in fertilizer production, and simultaneously chilling and compressing gases in liquefied natural gas (LNG) and hot-gas processes.

Large industrial tower in front of blue sky
Atlas Copco single-stage-EGI-8 turboexpander

Customer Benefits:

  • Variable Inlet Guide Vanes (IGVs) ensure optimal flow patterns and continuous control, even under varying conditions, such as ambient temperature changes
  • Computer-aided aerodynamics and impeller design for top efficiency and reliability
  • Solutions for a wide range of uses including: hydrocarbon processing, LNG reliquefaction, pressure letdown, air separation, and geothermal / waste-heat power generation
  • Easy installation, operation and maintenance
  • Available as standardized units or customized packages

 Brochure Driving Expander Technology
   
(900kB, Pdf document) – Download

 Delivering Complete ORC Solutions
   
(1.7MB, Pdf document) – Download

Atlas Copco turboexpanders are available in a number of models that can handle pressures up to 200 bar and are offered in booster compressor, expander generator, integrally-geared generator or hydraulic brake configurations.

Atlas Copco single-stage EG-6.0 expander generator

Inlet pressure up to: 200 bar
Gas handled:
all industrial gases and hydrocarbon gas mixtures, including condensing streams
Maximum power output in pressure letdown or ORC applications: 25 MW

Atlas Copco single-stage ETB 190 NS air expander

Inlet pressure up to: 160 bar
Gases handled:
all industrial gases and hydrocarbon gas mixtures, including condensing streams
Maximum power output in pressure letdown applications: 10 MW

Atlas Copco single stage ECM-4.0 expander compressor

Inlet pressure up to: 200 bar
Gases handled:
all industrial gases and hydrocarbon gas mixtures, including condensing streams