Alstom, Siemens, 1997, 13.4 MW Combined Heat and Power (CHP) Plant, 10500V

Description

  1. Overview
    1. Inventory number: E-7211
    2. 13.4 MW combined heat and power (CHP) plant, installed and commissioned in 1997.
    3. Provides steam and electrical power.
    4. Decommissioned in 2006; equipment continues to be well maintained and preserved.
    5. Conservation procedures include regular barring of the Tornado gas turbine to preserve internal components.
    6. Complete CHP plant available for immediate purchase.
  2. Major Components
    1. One Alstom Tornado gas turbine package.
    2. One Aalborg waste heat recovery boiler.
    3. One Siemens NG5 steam turbine package.
  3. Gas Turbine Package
    1. Turbine type: Tornado.
    2. Power rating ISO: 6.2 MW.
    3. Efficiency: 31.5%.
    4. Fuel configuration: natural gas.
    5. Acoustics: enclosure with CO2 fire protection.
    6. Turbine overhauled in 2006; very few running hours since last overhaul.
    7. Serviced throughout operational life under OEM maintenance contract.
    8. Main gearbox manufacturer: GEC / Alstom; type: planet; RPM: 1500.
    9. Alternator manufacturer: GEC / Alstom; power output: 6871 kVA; RPM: 1500; hertz: 50 Hz; insulation class: F; power factor: 0.9; kW: 6200; amps: 378; volts: 10,500.
    10. Balance of plant: turbine control system PLC Rustronic Mark 2; air filtration Cullum pulse filters; air ducting GEC/Alstom supply; exhaust GEC/Alstom supply; fire and gas system and detectors Howfire.
  4. Waste Heat Recovery Boiler
    1. Manufacturer: Aalborg; type: AX4 - WHR; auxiliary burner: Eclipse.
    2. Equipped with auxiliary firing for independent operation during gas turbine shutdown.
    3. Steam production: WHRB with AF firing; 11 t/h unfired and 45 t/h AF; 60 Barg; 485 deg C.
    4. Subjected to regular inspections.
  5. Steam Turbine Package
    1. Manufacturer: Siemens; type: NG 5.
    2. Output: 7.2 MW.
    3. Rated to produce 7.2 MW of electrical power at 10,500 volts.
    4. Subjected to regular inspections.
  6. Process Description
    1. Exhaust heat from the Tornado gas turbine passes through the Aalborg waste heat recovery boiler, which produces steam for production processes and for the steam turbine generator.
    2. Tornado gas turbine configured for operation on natural gas, providing excellent full and part load operating efficiency.
  7. Steam and Output Specifications
    1. Counterpressure steam: 45 t/h, 0.25 MPa, 200 deg C.
    2. High pressure steam: 45 t/h, 6 MPa, 485 deg C.
    3. Combustion gas: 475 deg C, 62 MW, 10 kV.
    4. High pressure boiler generator: 7.2 MW, 10 kV.
    5. Steam turbine generator: 6.2 MW, 10 kV.
    6. Gas turbine / air compressor: 6.2 MW, 10 kV.
  8. Documentation and Condition
    1. Full complement of operational manuals and original documentation for service records and inspections available for perusal.
    2. Plant decommissioned in 2006; equipment well maintained and preserved.
    3. Co-generation plant, combined-cycle.