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GE, Frame 6B, 1981, Gas Turbines, paired with AEG Generators, 5105 RPM

GE, Frame 6B, 1981, Gas Turbines, paired with AEG Generators, 5105 RPM Sold

Description

  1. Overview
    1. Two GE MS 6001 B gas turbines paired with AEG generators (type S7102/2)
    2. Year of commissioning: 1981
    3. Gas-fired operation until 2005, primarily for base load (~7000 hours/year)
    4. Retrofitted in 1996 with water injection for NOx reduction
    5. Converted in 2007 to peak load operation using heating oil (HEL) with new steel chimneys and upgraded control systems to ABB Procontrol 14
    6. Last network operation: 2015
    7. Last oil service: GT21 in October 2015, GT22 in September 2016
    8. Last borescope inspection: December 2016
    9. Defect: heating oil transfer line issue in 2017 halted operations
    10. Decommissioning: September 2023
  2. Operational Hours
    1. GT21: ~167,000 hours, ~1130 starts in combined cycle; ~130 hours, ~177 starts in peak load
    2. GT22: ~159,000 hours, ~1180 starts in combined cycle; ~150 hours, ~180 starts in peak load
  3. Technical Specifications
    1. Application: generator drive
    2. Shaft speed: 5105 rpm
    3. Control system: ABB Procontrol 14
    4. Protection systems: overspeed, overtemperature, vibration, and flame monitoring
    5. Cooling mechanism: integrated rotation device in the torque converter
  4. Environmental Conditions
    1. Ambient temperature: 15°C
    2. Air pressure: 0.9945 bar
    3. Pressure drop in intake system: 10.0 mbar
    4. Exhaust diffuser outlet pressure: 30.0 mbar
    5. Relative humidity: 60%
  5. Compressor Section
    1. Stages: 17 axial stages
    2. Type: high-performance axial compressor
    3. Casing: horizontally split
    4. Inlet guide vanes: adjustable
  6. Turbine Section
    1. Stages: 3 continuous shaft stages
    2. Casing: horizontally split
    3. Guide vanes: fixed
  7. Combustion System
    1. Type: 10 concentric ring chambers around the compressor
    2. Fuel nozzles: one per chamber, pressure atomized
    3. Ignition: 2 spring-loaded, self-retracting electrode-type spark plugs
    4. Flame monitors: 2 ultraviolet
  8. Bearing Arrangement
    1. Number: 2
    2. Bearing no. 1: pressure lubricated, combination of thrust and journal bearings
    3. Bearing no. 2: lemon bore journal bearing
  9. Starting System
    1. Device: diesel engine (12 V-71-NT turbocharger)
    2. Torque converter: hydraulic with integrated reversing gear and rotation device
  10. Fuel System
    1. Operating fuel: heating oil (HEL)
    2. Fuel pump: auxiliary gear-driven screw pump with constant flow
    3. Fuel distributor: free-rotating, 10 elements
    4. Fuel shutoff valve: electrohydraulic servo control
    5. Fuel filters: 2 low-pressure full-flow, 1 high-pressure full-flow
  11. Lubrication System
    1. Lubricant: petroleum-based
    2. Total volume: ~7000 liters
    3. Main oil pump: shaft-driven, flange-mounted to auxiliary gearbox
    4. Auxiliary and emergency oil pumps: motor-driven submersible centrifugal pumps
  12. Heat Exchanger
    1. Type: oil/water
    2. Quantity: single unit
  13. Lubrication Filters
    1. Type: full-flow with changeover valve
    2. Quantity: 2
    3. Filter type: 5-micron
  14. Hydraulic System
    1. Pump: gear-driven axial piston pump
    2. Filters: 2 full-flow with changeover valve
  15. Cooling System
    1. Pump: gear-driven centrifugal pump
  16. Atomization Air System
    1. Main compressor: gear-driven centrifugal compressor
    2. Starting compressor: positive displacement pump driven by starting diesel
    3. Pre-cooler: tubular and air/water heat exchanger
    4. Air filter: centrifugal separator
  17. Performance Data
    1. Output at generator terminals (heating oil): base load 33.75 MW
    2. Efficiency: 29.9%
    3. Exhaust mass flow: ~131.3 kg/s
    4. Exhaust temperature: ~530°C
  18. Included Spare Parts
    1. Compressor and turbine blading, used (various) and revised (leading row 2 + 3 and running row 1 + 2)
    2. Transition pieces used and revised
    3. Flammrohre used and revised
    4. Fuel nozzles and much more
    5. Cover segments (new)
    6. Complete warehouse with small parts (hydraulic components, screw connections, seals, measurement technology, etc.)
  19. Condition
    1. Brand: GE
    2. Model: Frame 6B gas turbine
    3. Year: 1981
    4. Condition: used