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37.5 MW Steam Turbine Generator Set with 2 Coal/Biomass Boilers, 50Hz, 94 t/h Steam Flow

37.5 MW Steam Turbine Generator Set with 2 Coal/Biomass Boilers, 50Hz, 94 t/h Steam Flow

Description

  1. Overview
    1. Coal / biomass fired boilers fuelled power plant
    2. Year: 1995
    3. 37 MW
    4. Year retired: 2014
    5. Condition: very good
    6. Status: installed on foundation
  2. Major Plant Components
    1. 2 off coal / biomass fuelled boilers, each producing 94 t/h of steam @ 90.7 bar abs. / 510 °C
    2. 1 off condensing turbo-generator with single controlled extraction producing 37.5 MW @ 11 kV / 3 ph / 50 Hz and 0 - 82 t/h of steam @ 44.9 bar abs
  3. Boiler Details
    1. Type: multi-solid fluidized bed
    2. Fuels: coal, biomass, natural gas, heavy fuel oil
    3. Steam flow normal: 94,000 kg/h
    4. Steam flow maximum: 94,000 kg/h
    5. Steam pressure normal: 90.7 bar abs
    6. Steam pressure maximum: 90.7 bar abs
    7. Steam temperature normal: 510 °C
    8. Steam temperature maximum: 515 °C
    9. Heating surfaces: economiser 5,252.5 m², combustor water walls 137.2 m², boiler water walls 215.7 m², EHE evaporator 238.7 m², secondary superheater 206.8 m²
    10. Design fuel (coal): gross caloric value 26,840 kJ/kg, moisture 11.1%, ash 10.1%, fuel consumption 1,940 kg/h
    11. Emissions (will not exceed): SOx 1,650 mg/Nm³, NOx 650 mg/Nm³, particulate matter 50 mg/Nm³
  4. Condensing Steam Turbine Generator Set
    1. 37.5 MW with single controlled extraction
    2. Year: 1992
    3. Year retired: 2014
    4. Major upgrade: 2007
    5. Condition: excellent
    6. Status: installed on foundation
  5. Steam Turbine Details
    1. Type: condensing with single controlled extraction
    2. Rated power normal: 37,489 kW
    3. Rated power maximum continuous: 37,489 kW
    4. Inlet flow normal (at rated power, zero extraction): 134,000 kg/h
    5. Inlet flow maximum continuous (at full extraction): 188,000 kg/h
    6. Inlet pressure normal: 87 bar abs
    7. Inlet pressure maximum continuous: 97 bar abs
    8. Inlet pressure minimum continuous: 78.5 bar abs
    9. Inlet temperature normal: 509 °C
    10. Inlet temperature maximum continuous: 534 °C
    11. Inlet temperature minimum continuous: 482 °C
    12. Controlled extraction pressure normal: 44.9 bar abs
    13. Controlled extraction pressure maximum continuous: 49.5 bar abs
    14. Controlled extraction pressure minimum continuous: 40.4 bar abs
    15. Controlled extraction flow: 0 - 82,000 kg/h
    16. Uncontrolled bleed flow: 12,000 kg/h
    17. Exhaust pressure normal: 0.08 bar abs
    18. Exhaust pressure maximum continuous: 0.088 bar abs
    19. Exhaust pressure minimum continuous: 0.072 bar abs
    20. Rated speed: 3,000 rpm
  6. Generator Details
    1. Manufacturer: Brush Electrical Machines, England
    2. Type: synchronous
    3. Specification: IEC 34.3
    4. Insulation class: F
    5. Rated power: 46,875 kVA
    6. Power factor: 0.8
    7. Active power: 37,500 kW
    8. Rated voltage: 11,000 V
    9. Rated current: 1,986 A
    10. Phases: 3
    11. Phase connection: Y
    12. Rated speed: 3,000 rpm
    13. Frequency: 50 Hz
  7. Condenser Details
    1. Manufacturer: KWU, Germany
    2. Type: surface condenser
    3. Steam flow normal: 122,000 kg/h
    4. Steam flow maximum: 122,000 kg/h
    5. Water flow: 2,815 m³/h
    6. Water temperature supply: 30 °C
    7. Water temperature outlet: 40 °C