8 tons per hour biomass boiler equipment list
Boiler Specifications:
- Type: Duel fuel type – Biomass (hulls, wood & other type of biomass)
- Capacity: 8 TPH
- Steam pressure: 11 Bar
Plant consist of:
• Feed water tank
• De aerator
• Feeding pumps – 1 working, 1 standby
• Fuel burner – Riello / Weishupt
• Biomass feeding conveyor
• Heating chamber
• Ash handling system
• Air blowing system
• Aspiration system – 100 ppm dust max in the exhaust air
• Steam header with all valves – 1 supply from boiler, 3 out from the header to plant
• Condensate receiving tank
• Safety valves, level controls
• Control panel with auto, manual operations, alarm indicators etc
• Diesel fuel day tank with pump, piping, pressure ring etc
• Materials for chimney in CKD condition
• 1 year spare parts
• Supply of the Material for the Chimney and Flue Gas Ducts between the Boiler and Chimney
• All Steam, Cold Water, Hot Water, and Drain Piping up to and from the Boiler’s terminal points
• Supply of the Material for the Steel Structure of the Boiler
• Electrical work in the Boiler house up to the control panel and terminal points of the motors and instruments
• Fuel Conveying system to the Boiler
• Condensate Collection & Pump back to the Boiler
Other specifications:
• Max. Continuous Rating…………………8000 Kg/hr (From & at 100ºC)
• Type of Boiler……………………………Brownian Motion
• Design Code……………………………...Indian Boiler Regulations
• Safety Valve Set Pressure………………...10.54 Kg/cm2
• Hydraulic Test Pressure…………………..15.81 Kg/cm2
• Thermal Efficiency on Bagasse…………...75% +/- 2% on wood as BS:845 Pt. 1 Indirect Method
• Groundnut Shell 3800 Kcal/Kg…………...1457 Kg/hr.
Material Specifications:
• Boiler Drums………………………………ASTM 515/516 Gr 60/70
• Headers…………………………………….ASTM 106 Gr B
• Boiler Tubes……………………………….BS 3059 Pt 1 ERW
• Ferrules…………………………………….AISI Stainless Steel 304
Velocity Profile:
• Brownian Motion…………………………..1 - 1.5 m/sec
• Freeboard Zone…………………………….8 -10 m/sec
• Convection Bank…………………………...20 - 15 m/sec
• Air Preheater Bank…………………………20 - 25 m/sec
• Dust Collector………………………………250 - 100 m/sec
• Gas Ducting………………………………..8 - 10 m/sec
• Chimney……………………………………6 - 8 m/sec
F.D. Fan Details:
• Type………………………………………..Centrifugal Direct Drive
• Motor………………………………………20 H.P.
• CFM……………………………………….10380
• Pressure……………………………………200 mm
I.D. Fan Details:
• Type……………………………………….Centrifugal V- Belt Drive
• Motor……………………………………...50 H.P.
• CFM……………………………………….23496
• Pressure……………………………………225 mm
Feed Pump Details:
• No. of Pumps……………………………...2 Nos.
• Type……………………………………….Multistage Centrifugal
• Make………………………………………Grundfos
• Flow……………………………………….8000 Ltr/hr.
Temperature Profile:
• Brownian Motion Furnace………………...1200 -1400ºC
• Free Board…………………………………1000 - 1200ºC
• Exit of Radiation Zone…………………….500 - 600ºC
• From Boiler………………………………...240 - 260ºC
• After Air Preheater…………………………150 - 180ºC
BOILER VALVE SIZING MOUNTINGS & FITTINGS (DRUM):
• One Main Steam Stop Valve………………..150 mm
• One Air Vent Valve…………………………15 mm
• Two Single Post Safety Valves……………...80 mm
• Two Sets of Water Level Gauges……………20 mm
• One Pressure Gauge with Siphon and Cock…15 mm
• One Inspectors Pressure Gauge Cock………..20 mm
• One Blow Down Valve………………………50 mm
• Two Feed Stop Valve………………………...40 mm
• Two Feed Check Valve………………………40 mm
MOUNTINGS & FITTINGS (WATER WALL HEADERS):
• Two Drain Valves…………………………….25 mm
CHIMNEY:
• Chimney diameter recommended…………….900 mm