boiler presentation660 mw

8/13/2019 Boiler Presentation660 MW

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CONTENTS

Introduction to Super Critical Boiler

Super Critical Cycle with SH, RH & Regeneration of Adani 660 MW

Controlled Circulation V/S. Once Through

Technical Specifications of Steam Generator

Steam & Water Flow Circuit For Super Critical Boiler

Air & Flue Gas Circuit For Super Critical Boiler Steam and Feed Water Parameter

Coal Analysis

Liquid Fuel Analysis

DM Water Quality

Technical Specifications of Soot Blowers, Coal Bunker, Coal feeder,Coal Pulveriser, Coal Burner, Fans & Air Pre Heater.

Weights of Critical Components of Boiler.

Electro Static Precipitator Basic Principle, process steps & TechnicalSpecifications.


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Sub Critical Rankine Cycle With

Superheat, Reheat & Regeneration


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Super Critical Rankine Cycle with

Super Heat & Reheat

SUPER CRITICAL CONDITION :

PRESSURE : 225 kg/cm2

TEMP. : 3750C


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Super Critical Boiler Cycle With SH, RH &

Regeneration of Adani 5 X 660 MWTEMP

0

5710C5690C

Steam Flow :2115.5 T/Hr

Steam Temp. : 571 0C

Steam Pre. : 254 kg/cm2

RH pre. : 43.59 Kg/cm2RH Temp. : 5690C

Feed water Temp. : 292.60C

ENTROPY

100100

200

300

400

500


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Controlled Circulation Once Through Circulation

Controlled Circulation V/S.

Once Through


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Technical Specifications

STEAM GENERATOR

Description Unit Value

Type Supercritical, Once Through Type,

Single Furnace, Single Reheat,

Balanced Draft, Outdoor Arrangement,Dryed Slag Discharge, Complete Steel

Structure, Complete Hanging

Construction, Double Gas Passes.

Manufacturer HARBIN BOILER COMPANY

Design Code

For Pressure

Parts

ASME, GB9222-88, IBR


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Description Unit ValueSafety Regulations NFPA

Nos. of Safety Relief

valves

in Super heater

2

Nos. of Safety Relief

Valves

in RH System

6 For RH Inlet

2 For RH Outlet

Furnace Dimension

(Width x Height x Depth)

mm 23567 x 17012 x 61643

Material of Construction

for Boiler Final Super

heater & RH Headers

SA335 P91 Final Super

Heater Headers;

SA335 P22 Final RH

Headers


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Material of Construction of Boiler

Final Super Heater & Reheater Coil

SA213T91

SA213

TP347HFor Final SH

SA213T22

SA213T91

SA213

TP347H

For Final RH

Range of the Burner Tilting

arrangement

(+/-)

in 0(+/-) 30

571C 254 Ksc


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HPT

IPTLPTC

O

N

D

E

N

S

E

R

FEEDWATER

FRS

S

T

O

R

A

G

E

T

A

N

K

SEPARATOR

BWRP

MS LINE

HRH LINE

VERTICAL WW

ECO I/L

ECO

JUNCTION

HDR

ECO HGR

O/L HDR

FUR LOWER HDR

FUR ROOF

I/L HDR

DIV PANELS SH PLATEN

SH

FINAL

RH

FINAL SH

LTRH

ECONOMISER

292C, 302 KSC

411C,

277Ksc

411C,

275 Ksc

492C, 260 Ksc

571C, 254 Ksc

329C,

45Ksc

569C,

43.5Ksc

GLPT


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PAF

TO COAL FEEDER

SEALING AIR

TO MILL OUTLET

VALVE SEALING AIR

MILL

F

MILL

E

MILL

C

MILL

B

MILL

A

CHIMNEY

A

PH

FIREBALL

WIND BOX

BURNERESP

MILL

D

FDF

ESP

FDF

PAF

IDF

IDF

WIND BOX

AP

HFROMCOLDPRIMARYAIRHEADER

SEALING

AIRHEADER

REARGA

SWALL

M M

TOSEALINGAIRHEAD

ER

COLDPRIMA

RYAIRHEADER

HOTPRIMA

RYAIRHEADER


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Steam And Feed Water Parameter


Maximum allowable pressure

drop in live steam line up to

STG

Kg/cm2 15

Rated Super heater outlet

steam temp. at TMCR

0C 571

Rated SH outlet pressure at

TMCR

Kg/cm2 254

Rated Reheat Steam Pressure

at TMCR

Kg/cm2 43.59


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Rated Cold Reheat Steam temp. at Boiler

Inlet

0C 328.6

Rated Hot Reheat Steam temp. at TMCR 0C 569

Rated Feed Water Temperature at

Economiser inlet at TMCR

0C 292.6

Rated Steam Flow at SH outlet of Boiler at

TMCR at Rated Parameters

TPH 1994.25

Rated Steam Flow at SH outlet of Boiler at

BMCR at Rated Parameters

TPH 2115.2


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COAL ANALYSIS

Proximate Analysis

Chemical Analysis

Total Moisture %AR ( as received) 33.0

Moisture %ad (air dried) 25.0

Ash Content %ad 4.5

Calorific Value

Gross Air Dried Kcal/kg 5037

Gross As Received Kcal/kg 4500

Net As Received Kcal/kg 4142


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Ultimate Analysis

Total Carbon Content %daf (Dry

Ash Free)

71.2

Total Hydrogen Content %daf 5.11

Total Nitrogen Content %daf 1.42

Total Sulphur %daf 0.64


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Liquid Fuel Analysis

Description Unit LDO HFO

Maximum Ash % 0.02 0.1

Sulphur-Max. % 1.8 4.5

Water Content by Volume-Max. % 0.25 1

Sediment Content by weight

Max.

% 0.1 0.25

Gross Calorific Value kJ/kg 41868 41868

Density at 15C Kg/m3 850-870 890-950

Viscosity Cst 2.5-15.7 370

Pour Point 0C 21 20

Flash Point 0C 66 66

Relevant Indian Standard IS:1460 IS:1460


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DM Water Quality

Turbidity NTU (Nephelometric

Turbidity Units)


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Soot BlowersDescription Unit Value

Nos. of Wall Blowers Nos. 48

Nos. of long Retractable blowers Nos. 34

Number of blowing cycles per day 2

Time required to complete one cycle of

complete soot blowing

2-3 hrs.

Operating pressure of soot blowing steam MPa 1.5

Operating Temp. of Soot Blowing Steam 0C 350


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Coal Bunkers


Type of Construction Steel

Material Q235/Q345

Inner Lining Stainless Steel

Number (Each Unit) Nos. 6

Capacity of each Bunker m3 700


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Coal Feeders


Type Gravimetric type

Numbers of Feeder (Each Unit) Nos. 6

Capacity TPH 75

Rated Power Kw 3.57


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Coal Pulverisers


Type of Design & Construction Medium Speed Mill


Capacity of each pulveriser for

the design coal

TPH 70

Min. load of Pulverisers % 25

Mill Speed Rpm 33

Driver Speed Rpm 982

Rated Power Kw 900

Avg. life of Rollers/Grind Roll &

Bottom Race Liners before

Replacement

Hrs. 12000


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Coal Burners


Manufacturer HBC

Type of Construction Tangential type tilting burner

direct flow


Lighting System of

Igniters

High energy arc Igniter (HEA)


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Fans

355300034001500kwDriver Power

14801490585985rpmDriver Speed

----------8885.590%Fan efficiency at MCR

12.856.76479.7220.8m3/sCapacity of each fan

2222Nos.Number

CentrifugalAxialAxialAxialType of Construction

Seal Air

Fan

P.A.

fan

I.D.

fan

F.D.

fan

ValueUnitDescription


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Regenerative Type Air Pre Heater

Nos.2

Speed of Rotation

0.9rpm

Cooling water Consumption

18t/h

Air temperature at

Regenerative APH outlet -

W i ht f C iti l C t f


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Weight of Critical Components of

Boiler

Component Weight in MT/UnitWater wall 734

Wall Enclosure Superheater 210

Superheater 1272

Economiser 700

Reheater 920

Air Preheater 1468

Boiler Buck Stay 588Boiler Steam Desuperheater

Device

20

Boiler Steel Structure,

Platform, Ladders

4960


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Component Weight in MT/Unit

Forced Draft Fan 10

Forced Draft Fan Motor 2.5

Induced Draft Fan 25

Induced Draft Fan Motor 4

Primary Air Fan 8

Primary Air Fan Motor 2

Seal Air Fan 6

Coal Pulveriser 720Coal Pulveriser Motor 3

Coal Feeder 9

Electro Static Precipitator 3000


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Total Tonnage of Steam Generator &

Auxiliaries per Unit15115 MT

Boiler Proper Welding Joint Number per

Unit43000 Joints


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Electro Static Precipitator

Basic Principle

ESP PROCESS STEPS


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ESP PROCESS STEPS

Collecting

electrode,

grounded

Rapping mechanismDischarge electrode with

Negative high tension (20-60kV)

4

Dust layer

1

1.Electron emission

2

2.Dust particle charging

3

3.Migration

4.dust collection

5

5.Rapping


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ESP TECHNICAL SPECIFICATIONS


Nos. of Gas Stream / ESP Double

Nos. of Parallel Path per Stream Nos. 38

Nos. of electrical fields in series Nos. 5

Total active treatment length per stream m 3.5

Treatment Time Seconds 15


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Total Number of Electrode Nos. 3192 x 2

Total numbers of Rappers per Unit Nos. 7

Total Nos. of Transformer Rectifier Unit Nos. 20

Capacity of Transformer Rectifier UnitEach

KVA 1.6A/72KV

Total No. of Dust Hoppers Nos. 40


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boiler presentation660 mw

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