GAS EXPANSION TURBINES

RECOVERING ENERGY FROM THE EXPANSION OF GAS TO PRODUCE COLD AND ELECTRICITY

Transport du gaz avant la détente – Energie circulaire

APPLICATION

The gas expansion turbines enable to recover the lost energy in natural gas expansion stations.

Gas transmission/distribution system operators and industrial customers consume natural gas. They tend to improve their energy efficiency and their economic balance in order to reduce their electricity consumption. They self-consume and/or export the produced electricity to the grid by recovering the expansion energy from natural gas without releasing or producing greenhouse gases. This energy recovery also makes it possible to simultaneously produce cold.

 There are various applications: expansion to distribution networks or industrial consumers, simultaneous production of electricity and cold.

COMPONENTS

For powers below 1 MW:

  • Hermetic multi-stage turbo generator
  • Natural gas-cooled high-speed generator
  • Active Magnetic Bearings

For powers above 1 MW:

  • Multi-stage turbine cantilevered on a gearbox
  • Gearbox shafts supported by hydrodynamic bearings
  • Attached to a 2 or 4-pole generator (synchronous or asynchronous)
  • Double tandem or double pressurized gas mechanical seal
Turbine axiale multiétage Enertime
Poste de détente de gaz remplacés par une turbine – Energie Circulaire

PERFORMANCE

AN EFFECTIVE SYSTEM

  • Turbine efficiency over 80%.
  • High performance at part load
  • Modular configuration
  • Lifetime of more than 20 years

FULLY AUTOMATED

  • Automatic start and stop
  • Load control
  • Advanced power electronics
  • Unattended operation
  • Low operating costs
  • Low maintenance required

FLEXIBLE

  • Wide operating range (50% to 110% load)
  • Simple and compact installation design

EXPLANATORY SCHEME

Diagram:  operation of an ORC to recover industrial waste heat