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8000 Kg/hr High Pressure Biomass Steam Boiler Specifications

2023-02-13 08:55:05

 Boiler Specifications:

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

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