Turbo Expanders

Maintenance Partners has a broad experience in overhauling and repairing turbo expanders:

  • Single stage radial and axial turbo expanders
  • Multi stage axial turbo expanders
  • Single stage axial turbo expander wheels directly connected to axial compressor – can be in combination with an abradable sealing upgrade to the compressor for increasing efficiency

These turbo expanders are utilised in the following applications:

  • Chemical and petrochemical industries
    • Fluid Catalytic Cracking (FCC)
    • Residue Fluid Catalytic Cracking (RFCC)
    • Nitric Acid
    • Acetic Acid
    • Terephtalic acid, or PTA
  • Natural gas and oil industry
    • Pipeline pressure reduction
    • LNG, LPG
    • Liquefaction of methane
  • Coal gasification and hydration
  • General industrial power recovery for example blast furnace top gas expansion

Turbo Expander Activities

Our services on turbo expanders include:

  • Standard minor inspections
  • Full comprehensive overhauls
  • Re-blading
  • Complete new rotor manufacturing
  • Emergency interventions and repairs
  • Spare parts manufacturing including:
    • Labyrinths
    • Radial inflow expander wheels
    • Diaphragms
    • Tie bolts
    • Bearings
    • Casings
  • Overlay welding and laser cladding of stub shafts
  • Mechanical re-design solving structural issues
  • Low and high speed balancing
  • On-site activities such as build-up, start-up support and vibrations measurements.

Inspections on turbo expanders are carried out and reported according to API 687 (Rotor Repair Phase 1 and 2) and API 617 (Axial and Centrifugal Compressors and Expanders-Compressors – Chapter 1&4) standards.