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