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NovaStar, BG105, Bagasse Fired Travelling Grate Boiler, 94 TPH (New)

Description

  1. Overview
    1. One (1) 94 TPH MCR capacity bagasse fired travelling grate boiler.
    2. Steam pressure at superheater outlet: 500 psi (35 kg/cm² g).
    3. Steam temperature at superheater outlet: 400°C (752°F) ± 15°C (27°F).
    4. Feed water temperature at economizer inlet: 110°C (230°F).
    5. Construction code: Manufacturer's national boiler code.
    6. Mode of firing: Travelling grate stoker with planetary/hydraulic drive.
    7. Electric supply: 3 ph, 480 V, 60 Hz AC.
    8. Excess air: 35% maximum.
    9. Flue gas temperature at outlet: 150°C (302°F).
    10. Boiler efficiency: 70% on GCV of bagasse with 50% moisture.
  2. Fuel Specifications
    1. Design fuel: Bagasse with 50% moisture.
    2. Ash content: 2.0%.
    3. Volatile matter: 41.5%.
    4. Fixed carbon: 7.5%.
    5. Gross calorific value: 2,270 kcal/kg (4,086 BTU/lb).
  3. Scope of Supply
    1. Steam drum.
    2. Water drum.
    3. Boiler tubes (boiler bank tubes and membrane panel construction furnace with ERW carbon steel tubes).
    4. Superheater coils (SA 210 C.S. seamless + SA 213 T-11 alloy steel seamless).
    5. Attemperator.
    6. Economizer coils (ERW carbon steel tubes).
    7. Headers for boiler, superheater, and economizer.
    8. Air preheater.
    9. Continuous ash discharge travelling grate stoker with planetary drive.
    10. Bagasse feeders with drives (arch breakers), 4 units.
    11. Doors and peepholes.
    12. Rotary motorized soot blowers for boiler bank and economizer zone, and long retractable soot blower for superheater zone.
    13. Drum internals.
    14. Drain, soot blower, and feed water piping.
    15. Fans: 2 I.D. fans, each 50% capacity; 1 F.D. fan and 1 S.A. fan, each 100% capacity.
    16. Boiler structure, platforms, ladders, and railings (mild steel structure from concrete footings at +300 mm (11.8 in)).
    17. Ducting, hoppers, and casing.
    18. Fixtures and holders.
    19. Refractory.
    20. Insulation with aluminum cladding.
    21. Valves and fittings.
    22. Safety valves and water level gauges.
    23. Foundation bolts.
    24. Exhaust and air vent piping.
    25. Instruments and controls for boiler (DCS based).
    26. Dust emission at ESP outlet: 100 mg/Nm³.
    27. Feed water tank, deaerator vessel, and deaerator storage tank (with common supporting structure).
    28. Electric motors for fans and feed pumps.
    29. Feed water pumps: 2 pumps, each 120 m³/hr (528 US gpm) at 450 m (1,476 ft) head (1 working + 1 standby) with A.R.C. valves.
    30. High pressure and low pressure chemical dosing system.
    31. Blow down arrangement.
    32. VFDs for I.D. and F.D. fans, feed water pumps, and fuel feeders.
    33. Electrical MCC, cables, starters, and earthing.
    34. Roof canopy.
    35. H.P. live steam piping up to outlet of MSSV/NRV on superheater outlet header.
  4. Optional Items
    1. Ash handling system for grate ash: submerged belt conveyor with drive.
    2. Ash handling system for fly ash: mechanical ash handling system with screw conveyors and belt conveyor up to the inlet of ash silo, with drives.
    3. Mild steel fabricated chimney of suitable diameter for one 94 TPH boiler and height of 45 m (147.6 ft).
    4. Bagasse handling system for conveying bagasse from bagasse yard to boiler: can be quoted separately on getting details of plot plan of proposed boiler and fuel yard.
  5. Terminal Points of Supply
    1. Air: Inlet of F.D. fan / S.A. fan.
    2. Flue gas: Inlet of purchaser's concrete or mild steel chimney.
    3. Main steam: Up to outlet of MSSV / NRV on superheater outlet header.
    4. Fuel: Inlet of bagasse feeding chutes below purchaser's MBC with motorized gates.
    5. Ash: Outlet of travelling grate ash discharge hopper(s) and outlet of RAL valves for economizer, air heater, and ESP hoppers.
    6. Feed water: Inlet of deaerator vessel.
    7. Electrical power: Inlet of MCC panel.
    8. Instrumentation: Including DCS based controls.
  6. Exclusions
    1. All civil work and civil foundations.
    2. Water and drain piping beyond terminal points.
    3. High pressure steam piping from superheater header to turbine generator set, existing CSDH, PRDS with upstream and downstream piping.
    4. Statutory boiler inspection, registration, and approval fees; third party inspection at site.
    5. Chemicals required for boiling out the boiler.
    6. Ash handling system for grate ash and fly ash, ash silo.
    7. Sand, cement, lime, red bricks, mortar, grease, oil, etc.
    8. SWAS system and DCS controls system.
    9. Fuel, treated water, lubricants, resins for water treatment plant, etc. required for trial, commissioning, and operating the boiler.
    10. Mild steel chimney with its accessories (quoted as optional item).
    11. Ash handling system for fly ash and wet ash (quoted as optional item).
    12. D.M. / R.O. plant, D.M. water storage tank, process return condensate piping to feed water tank / deaerator.
    13. O & M spares for 2 years of operation of the boiler.
    14. Control room for instruments with air conditioners, boiler house lighting.
    15. Any other items not specifically mentioned in the offer.