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IJT, Biomass Power Plant, 2003, 7.5 MW, 50 Hz, 33 TPH Boiler

IJT, Biomass Power Plant, 2003, 7.5 MW, 50 Hz, 33 TPH Boiler

Description

  1. Overview
    1. Biomass power plant
    2. Output: 7.5 MW
    3. 50 Hz
    4. Date of commissioning: 14.02.2003
  2. Boiler
    1. Type of boiler: IJT travelling grate and bi drum boiler
    2. Number of boilers: 1
    3. Make of boiler: IJT Noida
    4. Specification standards: 33 tons, 66 pr, 495 °C
    5. Heat transfer area (attach IBR certificate): 1804 sqm
    6. Design steam flow: 33 tph
    7. Main steam pressure: 66 kg/cm²
    8. Steam temperature at super heater outlet: 495 °C ± 5 °C
    9. Feed water temperature at inlet of economizer: 130 °C
    10. Flue gas temperature at the outlet of air pre-heater: 150 °C
    11. Average ambient temperature: 40 °C
    12. Relative humidity: 35%
    13. Boiler thermal efficiency (on GCV basis): 80%
  3. Steam Turbine
    1. Type of turbine: extraction cum condensing (EC)
    2. Make of turbine: Triveni
    3. Number of turbine stages: 13 stages
    4. Inlet steam parameters: 64 kg/cm², 485 °C ± 5 °C, 31.8 tons
    5. Extraction 1 parameters: 4 kg/cm², 260 °C, 3.75 tph
    6. Full condensing type: 0.095 ATA, 44.5 °C, 28.05 tph
  4. Alternator
    1. KVA: 9375
    2. Voltage: 11 kV
    3. Current: 492
    4. Power factor: 0.80 lag
    5. Speed: 1500 rpm
    6. Make: BHEL Bopal
    7. Specification standard: class F
  5. Condenser
    1. Type: surface fixed tube type
    2. Steam flow: 28050 kg/hr
    3. Design vacuum: -1.0
    4. Cooling water flow: 2400 m³/hr
    5. Cooling water temperature in/out: 32 – 40 °C
    6. Make: Team India Ltd / SB/E/0252
  6. Fuel Details
    1. Design fuel: rice husk and coal
    2. Other fuels used: agriwaste
    3. Moisture: 9.4%
    4. Fixed carbon: 36.6%
    5. Ash: 15.01%
    6. Volatile matter: 17.6%
    7. GCV: 3275 kcal/kg
  7. Auxiliary Design Details
    1. Fuel handling system
      1. Chippers: 1, make CIBI, capacity 5 tph, 90/120 kW/HP
      2. Crushers: 1, make Methods, 37.7 kW/HP
      3. Belt conveyors: 7, make Hyquip, 7.5, 7.5, 3.7, 5 kW/HP
      4. Screw conveyors: 3, make IJT, 3.7/5.0 each kW/HP
      5. Chain conveyors: 1, make IJT, 3.7/5.0 each kW/HP
    2. FD fan
      1. Type: IERB8 – 950 blower/impeller
      2. Air flow: 10.7 m³/sec
      3. Discharge pressure: 165 mmWC
      4. Motor rating: 30 kW
    3. ID fan
      1. Type: IERB – 1600 blower/impeller
      2. Air flow: 29 m³/sec
      3. Discharge pressure: 235 mmWC
      4. Motor rating: 100 kW
    4. SA fan
      1. Type: IERPH – 1500
      2. Air flow: 500 m³/sec
      3. Discharge pressure: 665 mmWC
      4. Motor rating: 55 kW
    5. BFW pumps
      1. Type (number of stages): HAD 65/15, 15 stages
      2. Water flow: 31.5 m³/hr
      3. Head: 95 m
      4. Motor rating: 22 kW
    6. Condensate external pumps
      1. Type: centrifugal CPKGCM 050250
      2. Water flow: 31.5 m³/hr
      3. Head: 95 m
      4. Motor rating: 160 kW
    7. Cooling tower (for water cooled)
      1. Type: induced draft CT
      2. Water flow: 2400 m³/hr
      3. Range: 8 °C
      4. Make: Shriram Tower Tech
    8. Cooling water pumps
      1. Type: centrifugal
      2. Water flow: 1200 m³/hr
      3. Head: 21 m
      4. Motor rating: 90 kW
    9. ESP/cyclones
      1. ESP
      2. Design efficiency of dust collection system: 115 nm³/mg
    10. Economizer
      1. Flue gas temperature design in/out: 410 / 238 °C
      2. Flue gas temperature actual in/out: 360 / 180 °C
      3. Feed water temperature design in/out: 130 / 213 °C
      4. Feed water temperature actual in/out: 120 / 190 °C
      5. % O2 / CO2 in flue gas economizer design: 4.1 / 15.8
      6. % O2 / CO2 in flue gas economizer actual: 3.98 / 15.6
    11. Air pre-heater
      1. Flue gas temperature design in/out: 238 / 150 °C
      2. Flue gas temperature actual in/out: 180 / 144 °C
      3. % O2 / CO2 in flue gas economizer inlet design: 3.88 / 14
      4. % O2 / CO2 in flue gas economizer inlet actual: 4.02 / 14.8
    12. DM water system
      1. Capacity: 4.0 m³/hr
      2. Make: Doshio Ahemabad
    13. Air compressor (for instrumentation)
      1. Type: reciprocating type
      2. Capacity: 112 cfm
      3. Discharge pressure: 7.7 kg/cm²