BHF 08-13_08R0.pdf

8/9/2019 BHF 08-13_08R0.pdf

1/12

Coal f ired Fluid bed boiler

PT BASUKI PRATAMA ENGINEERING

Page 1 of 12D:/Adat/Penawar/Std/Spek2008/BHF08-13_08R0.doc

PT BASUKI PRATAMA ENGINEERINGproposes to offer,the equipment and

services contained in this proposalOne Fluid bed Boiler

Boiler Model : BHF-08-13

Nominal Rating (MCR) : 8,000 kg/hrHeat output : 5,873 kW

Design Pressure : 13 bar g

Design Code : Depnaker RI

Fuel Specification : Bituminous coal - Indonesia

Gross Calorific Value : 3500 - 6200 kcal/kg

Electrical power : 380 V 50 Hz 3 phase

SALIENT FEATURES

HIGH EFFICIENCY

FLUID BED COMBUSTION FOR BURNING COAL

WELDED MEMBRANE WALL CONSTRUCTION FORFURNACE WALLS

IN BED TUBE BUNDLE

RELIABLE FIRE TUBE STEAM GENERATOR WITH LARGEWATER VOLUME

PACKAGED BOILER WITH LITTLE SITE WORK

NATURAL CIRCULATION DESIGN

ELECTRIC VARIABLE SPEEED DRIVE FOR FUEL FEEDCONTROL

FULL BOILER CAPACITY WITH ANY KIND OF COAL

8/9/2019 BHF 08-13_08R0.pdf

2/12

COAL fired fluid bed boi ler

PT Basuki Pratama Engineering Page 2 of 12

D:/Adat/Penawar/Std/BHF-New/BHF22013.doc

SCOPE OF SUPPLY

- Fluid bed furnace with casing, refractory lining and air distributor with nozzles

- Water wall assembly with headers

- Fire tube boiler shell with two gas passes and necessary nozzles, manhole, head holes etc.

- In-bed tube bundle with headers.

- Riser and down comers for natural circulation.

- Access ladder and platform for boiler shell

- Insulation and galvanized iron cladding

- Two number screw feeders with variable frequency drives.

- Valves and mountings as shown in the P&I diagram

- Modulating water level control including three way control valve

- Independent extra low level safety

- Two feed water pumps

- Control panel including all panel mounted instruments and starters for all drives.

- Cyclone separator complete with rotary lock valve.

- Floor mounted induced draft fan & forced draft fan

- Operating and maintenance manuals

8/9/2019 BHF 08-13_08R0.pdf

3/12




DETAILED EQUIPMENT SPECIFICATIONS

1 Fluid bed Boiler

Boiler Model : BHF-08-13

Type : Horizontal combined

water and fire tube three pass

Fire tube size : 76.1 x 3.2 mm thk

Stay tube size : 76.1 x 5 mm thick

Diameter of shell : 2200 mm

Length of shell : 5400 mm

Total hating area of boiler : 223 m2

Material of construction

Shell : SA 515/516 Gr. 60/70

Tubes : BS 3059 Gr. 320 ERWReversing chamber : Mild steel

Water wall assembly

Tube material : BS 3059 Gr 320 ERW

Tube size : 50.8 x 3.2 mm thk.

Header material : A 106 Gr. B

Total heating surface : 21.4 m2

Construction : Membrane wall

In bed tube bundle

Tubes material : DIN 17175 St 35.8

Seamless tubes

Tube size : 50.8 x 5 mm thk.

2 Fluid bed combustor

Type of combustor : atmospheric fluid bed

Type of distributor : Steel plate with nozzles

Material of nozzle : Stainless steel

Fuel Specification : Bituminous Coal - Indonesia

Gross Calorific Value : 3500 - 6200 kcal/kg

Coal size required : 100 % below 15 mm with max

15% below 2 mm sieve.

Maximum water content : 20 %

Type of sand : Silica sandSize : 0.8 1.2 mm

8/9/2019 BHF 08-13_08R0.pdf

4/12




3 Forced draft fan

Quantity : One

Type : Centrifugal fan

Type of fluid : Fresh air

Service temperature : 40 deg. C

Type of drive : Direct

Material : Mild steel

Make : Basuki

Motor protection : IP 55

Paint protection : Industrial paint

Power : 37 kW

4 Induced draft fan

Quantity : One

Type : Centrifugal fan

Type of fluid : Flue gas

Max. Service temperature : 300 deg. C

Type of drive : Indirect drive

Material : Mild steel

Make : Basuki

Motor protection : IP 55

Paint protection : Heat Resistant paint

Power : 40 kW

5 Boiler feed water pump

Quantity : Two

Type : Multi stage centrifugal pump

Orientation : vertical in line

Capacity : 9.6 m3/hr

Head : 155 MLC

Max. Ambient temperature : 40 deg. C

Max. Fluid working temperature : 120 deg. C

Rotation : 2900 Rpm

Connection : Flange

Power : 7.5 kWMake : Grundfos/KSB

6 Dust collector

a. Multicyclone

Quantity : One

Type : Multy cyclone with Rotary

Lock Valve

Gas temperature : 240 C

Gas side pressure drop : 100 mm Wg

Material of construction : Mild steel

8/9/2019 BHF 08-13_08R0.pdf

5/12




Attachments to cyclone : Motorized rotary air lock

Power : 0.37 kW

b. Wet Scrubber

Quantity : One

Type : Ventury scrubber

Gas side pressure drop : 100 mm Wg

Material of construction : Stainless steel

Attachments to scrubber : Droplet separator,

Water pump

Water pump

Type : Single stage centrifugal

Orientation : Horizontal

Capacity : 9.6 m3/hr

Service : Fresh water

Connection : Flange PN16

Rotation : 1450 Rpm

Power : 2.2 kW 6

7 Safety valves

Type : Fully lift safety valve with closed

lifting device closed bonnet

Nominal pressure : PN 16

Connection : Flange DIN STD 2533

Body material : GG-25

Range temperature : -1 Deg. C up to 300 deg. CQuantity : Two

Capacity : 8,000 Kg/hr

Set pressure : 13 barg and 12.5 barg

Make : ARI, Germany

8 Thermal insulation

Material : Mineral wool slabs, lightly resin

Bonded

Thickness : 100 mm

Density : 80 kg/m3

Cladding material : Galvanized iron sheetThickness : 0.6 mm

9 Control panel

Type : Self standing

Incomer rating : 380 V 50 Hz, 3 phase, 4 wire

Doors : 1 door front opening type

The panel includes all panel mounted instruments and drives for all connected motors.

8/9/2019 BHF 08-13_08R0.pdf

6/12




10 Ducting for air and flue gas (Optional price)


Velocity in ducts : 12 m/s maximum

Finish coat : Heat resistant paint

Color : Silver

11 Coal handling system (Optional price)

We can offer a complete coal handling plant for the boiler. The coal storage and feeding

system includes the following components

a) Coal bunker near boiler

Capacity : 4 m3

Height approx. : 8 meters

Location : Mounted above the screw feeders

Material of construction : Mild steel bunker on mild steel

structure

Finish coal : Industrial paint

b) Belt Conveyor

Capacity : 3,000 kg/hr

Drive power : 2.2 kW

Accessories :

Coal receiving hopperCapacity : 2 m3


Location : Below ground level

Finish coal : Industrial paint

12 Chimney (Optional p rice)

Type : Self standing chimney

Diameter : 850 mm at the top

Height : 20 meters

Material construction : Carbon steel

Finish coat : Heat resistant paintAccessories : Ash door

13 Ladder for chimney (Optional price)

Type : ladder with cage

Material : mild steel

Accessories : service platform

Finish coat : Industrial paint

8/9/2019 BHF 08-13_08R0.pdf

7/12




14 Water Tank (Optional price)

Type : Horizontal thorispherical disc end

Water contents : 8 m3

Material construction : Carbon steel

Accessories : Discharge Valve and drain valve

Height of the feed water tank at least 2.5 m depending on feed water temperature

15 Instrumentation and control including the following

- Modulating water level control including level transmitter, controller and

motorized three way control valve

- Minimum water safety by independent conductivity type level electrodes

- Boiler pressure safety including two number full lift safety valves, two number

pressure switches

- Flue gas temperature control including temperature switch and alarm

- Water flow meter

- Two bed temperature indicators with control

16. Valves and fittings

The boiler system includes the following valves and fittings. Some of these are installed

on the pressure part. Others have to be installed by the erection contractor in the water

piping.

Globe valve DIN PN 16

DN 20 - 2 No

DN 25 - 1 No

DN 40 - 10 No

DN 65 - 2 No

DN 150 - 1 No

BSP - 5 No

Needle valves PN 40

BSP - 6 No

Blow down valves, Germany PN 40

DN 20 - 3 No

DN 40 - 1 No

Safety valve ARI Germany PN 16

DN 50/80 - 2 No

Non return valve Disco checkDN 40 - 3 No

Three way control valve Regeltechnik Germany, electric motor actuator

DN 40 - 1 No

Y strainer DIN PN 16

DN 65 - 2 No

Butterfly valve PN 6

DN 50 - 4 No

Gauge glass assembly, PN 40

DN 20 - 2 No

Pressure Indicator

Dia. 160 mm - 1 No

8/9/2019 BHF 08-13_08R0.pdf

8/12




Dia. 63 mm - 3 No

17. Manufacturi ng certif icate from Depnaker RI

8/9/2019 BHF 08-13_08R0.pdf

9/12




EXCLUSIONS

1) All civil works including foundations etc.

2) Piping in between the boiler w/o insulation

3) Air and flue gas ducting

4) Electrica l cabling in between the boiler

5) Chimney, platform & ladder for chimney

6) Coal bunker

7) Water tank

8) Coal belt conveyor

9) Transportation, Erec tion & commissioning

10) Boiler house structure with roof and side panels. Control room with airtight

arrangement

11) Boiler operation certificate

12) All spares for operation and commissioning

8/9/2019 BHF 08-13_08R0.pdf

10/12




FEED WATER & BOILER WATER QUALITY

In order to ensure smooth and trouble free operation of the boiler, following

recommendations are specified for combined water tube and fire tube

boilers.

Drum operating pressure 1 to 22 kg/cm g

1. Feed Water

Hardness Ppm < 2

pH at 25 C > 9

Oxygen, mg/l < 0.02

Total iron mg/l < 0.05

Total copper mg/l < 0.01

Oil/ Grease mg/l < 1

KMnO4 consumption mg/l < 10

Conductivity at 25C

measured after cation

exch.in H+ form and after

CO2removal.

s/cm < 500

2. Boiler Water

pH at 25 C 10.5 12

Phosphate residual (PO4) mg/l 10 - 20

Total Hardness Mmol/l < 0.2

Specific electrical

conductivity at 25Cs/cm 30 7500

Silica. mg/l < 150

KMnO4 consumption mg/l < 150

Sodium sulfite as Na2SO3 mg/l 10 - 30

8/9/2019 BHF 08-13_08R0.pdf

11/12




TERMINAL POINTSSteam: At outlet flanges of steam stop valve.

Outlet of steam vent lines

Feed water: Inlet of water pump

Inlet of the steam boiler

(The connecting piping is excluded.)

Blowdown/Drain: At the outlet of blow down valves

Flue gas: Outlet of ID Fan

Fuel: Inlet of the coal screw feeder

Electricals: Inlet of instrument control panel.

Instrument air At one point in the boiler house

Ash: Outlet of ash drain ports

combustion air: At the FD fan inlet

8/9/2019 BHF 08-13_08R0.pdf

12/12




SUPERVISION OF ERECTION AND COMMISSIONING

We can depute our engineer for supervising the following at additionalcost.

1 ERECTION:

Erection of all units at site.

Installation of control panel and instruments.

Instrument cable lying.

Erection of steel chimney, coal bunker, ducting for flue gas, structures for

accessories, bunker etc.

Erection of boiler feed water pumps and inter-connecting piping.

Erection of steam and water piping

Insulation.

Refractory lining.

All power and instrumentation cabling

All impulse piping

Dust collector

2 COMMISSIONING:

Hydrostatic test

Feed water system flushing.

Chemical cleaning of boiler.

Starting up and initial operation of feed water system, dosing system and

other units.

Commissioning of the units.

Documents

BHF 08-13_08R0.pdf