IGT 25

IGT25 

IGT25 Technical specifications

OVERVIEW

  • Mechanical drive: 25.40 MW (34,100 bhp)
  • Shaft efficiency: 35.1 %
  • Heat rate: 10,258 kJ/kWh  (7,250 Btu/hph)
  • Turbine speed: 7,700 rpm (50–105 %)
  • Compressor pressure ratio: 14:1
  • Exhaust gas flow: 80.4 kg/s (177.3 lb/s)
  • Exhaust temperature: 543° C (1,009° F)
  • NOx emissions (with DLE corrected to 15 % O2 dry)- Gas fuel: ≤25ppmV
  • Liquid fuel ≤ 42 ppmV (wet) 

 

Axial Compressor 

  • 10-stage axial flow compressor
  • 2 stages variable guide vanes
  • Electron-beam welded rotor

 

Combustion 

  • 18 dual-fuel 2nd generation
  • Dry Low Emissions (DLE) burners
  • Welded annular sheet metal design

 

Compressor Turbine

  • 2-stage axial flow compressor turbine - Both stages are air-cooled

 

Power Turbine

  • 2-stage free power turbine, uncooled
  • Interlocking shrouds

 

Fuel System

  • Natural gas – Liquid fuel – Dual fuel
  • Fuel-changeover capability at full and part load

Emissions control 

  • DLE combustion system
  • Water injection for NOx-reduction during liquid fuel operation
  • DLE combustor

 

Bearings

  • Tilting pad radial and thrust
  • Vibration- and temperature monitoring

 

Lubrication 

  • Lubricating oil tank located in package base frame
  • Two main lube oil circuits, low pressure and high pressure
  • 3x50 % HP and 3x50 % LP AC-driven lube oil pumps with DC backup 

 

KEY FEATURES 

  • Robust industrial design
  • Excellent operational availability and reliability
  • Excellent DLE experience
  • Low emissions, DLE ≤25 ppm NOx
  • Dual-fuel capability
  • Wide range of fuel capability
  • Long-term efficiency, low deterioration
  • Low life cycle cost
  • Workshop tested

 

MAINTENANCE 

  • No need for special workshop maintenance
  • 24-hour gas generator exchange or Onsite maintenance
  • Modular build-up for easy maintenance on site
  • Standardized concepts for maintenance planning
  • Condition-based maintenance
  • Extended time between overhaul when running on part load
  • Low deterioration and service cost
  • Gas turbine can be removed on rollers through the maintenance doors
  • Horizontal split compressor casing 

  

IGT25 Gas turbine Upgrading

  • IGT25 PC (Performance concept)

Mechanical Drive: 27 MW

Shaft Efficiency: 36%

  • IGT25 MC (Maintenance  concept)

1.2 life time Extension in hot parts

  • IGT25 FC(Flexibility  concept)

Fast start option

Fast loading option

Contact Us

  • No 61,West Vanak St,Aftab St,
  • Khodami Ave,Tehran,Iran
  •     
  • Tell :+98(21) 88601650-9  
  • Fax :+98(21) 88620599
  •    
  • info@otc-ir.com