hi i m pintu.. presentation on ntpc barh

1. WELCOME

2. A SUMMER TRAINING PRESENTED ON
N.T.P.C.L.
BARH (PATNA)
• SUBMITTED TO
• ER. SIMARAN SINGH GILL
• H.O.D. OF MECHANICAL DEPART.
• SUBMITTED TO
• PINTU KUMAR
• 7TH
SEM , 4TH
YEAR
• 12ESGME028

3. THERMAL POWER PLANTTHERMAL POWER PLANT

4. INDEX
1. INTRODUCTION.
2. LOCATION
3. ESTABLISHED
4. AREAS
5. PRODUCTION PROCEDURE
6. PROJECT COST
7. CAPACITY
8. PLANT LAYOUT
9 . EXTERNAL LINKS
10. CONCLUSION.

5. INTRODUCTIONINTRODUCTION
BARH THERMAL POWER STATIONBARH THERMAL POWER STATION
Location :- BARH PATNA BIHARLocation :- BARH PATNA BIHAR
Status :- COAL BASED PLANTStatus :- COAL BASED PLANT
Commission Date:- 1999 (Unit I+2+3)Commission Date:- 1999 (Unit I+2+3)
Owner :- N.T.P.C.LOwner :- N.T.P.C.L
Generation Unit :- 660*5MWGeneration Unit :- 660*5MW
Installed Capacity:- 3300MWInstalled Capacity:- 3300MW

6. LOCATION
• Barh Super Thermal Power Station or NTPC Barh is located in
Barh in the Indian state of BIHAR.
• NTPC Barh is located barely four kilometres east of the Barh sub-
division on National Highway-31 in Patna district.
• The project has been named a mega power project.
• It is owned by Indian energy company National Thermal Power
Corporation.

7. ESTABLISHED
• The PM Atal Bihari Vajpayee had laid the foundation stone of the main
plant of stage-1 of NTPC Barh on March 6, 1999.
• The formal inauguration of its site office and laying of the foundation
stone of the training centre at the plant site was done in September
2003.
• Former Union power minister Sushil Kumar Shinde had inaugurated the
main plant house of stage-2 of NTPC Barh on May 29, 2006.

8. AREAS
• The main power plant and the township is
spread over an area of 1,186 acres.
• The legal possession of 1,186 acres of land has
been acquired for setting up the main power
plant and its township which includes 12
villages.

9. PRODUCTION SHEDULE
• The 1,980MW (3x660 MW) Barh Stage-1 is
being built by Russian firm
Technopromexport(TPE)
• 1,320MW (2x660 MW) Barh Stage-2
extension is being built by Bharat heavy
electricals limited (BHEL).

10. PROJECT COST
• The plant is to produce 3,300MW of power
at a cost of over Rs 26,000 crore.
• The total approved cost of stage-1
(660MWx3) has Rs 8,692.97 crore.
• The total approved cost of stage-2 (unit 1)
plant is Rs 7,688.12 crore.

11. PRODUCTION UNIT WISE
 UNIT 1 - 1X660 MW Under constuction
 UNIT 2 - 1X660 MW Under constuction
 UNIT 3 - 1X660 MW Under constrution
 UNIT 4 - 1X660 MW Running Feb, 2007
 UNIT 5 - 1X660 MW Running Sept, 2014
• Total supply 1320MW Now days

12. Boiler.Boiler.
Turbine.Turbine.
Super Heater.Super Heater.
PA,FD & ID Fan.PA,FD & ID Fan.
Cooling Tower.Cooling Tower.
MECHANICAL DESIGNMECHANICAL DESIGN

13. A steam generation BOILER is oneA steam generation BOILER is one
of the most important part. Boilerof the most important part. Boiler
consist of furnace, Boiler drum,consist of furnace, Boiler drum,
Down comers, Riser, Super heater,Down comers, Riser, Super heater,
Re-Heater, Economizer, AirRe-Heater, Economizer, Air
preheater, Tube mills, FD and IDpreheater, Tube mills, FD and ID
fans and various control system.fans and various control system.
In a water tube boiler, Feed waterIn a water tube boiler, Feed water
heater in three kinds of heatheater in three kinds of heat
exchanger, Economiser,Evaporatorexchanger, Economiser,Evaporator
and Super heater.and Super heater.

14. BOILER & IT’S ACCESSORIESBOILER & IT’S ACCESSORIES
BOILER DRUM
SUPER HEATERS
AIR HEATERS
SUPRING LOADED SAFETY VALVES
PRIMARY AIR CYCLE IGNITERS
ECONOMIZER
SUPER HEATERS
REHEATERS

15. BOILER
PARAMETER
 Height of chimney 220 meters
 Foundation depth 8.5 meters
 Furnace depth 11506 meters
 Furnace width 15.240 meters
 Total water flow 780.5 T/Hr.
 Steam flow 740.8 T/Hr.
 Steam temperature 540°C
 Coal requirement for 250 MW 160 T/Hr.
 Primary air for pulverized fuel 268.4 T/Hr.
 Secondary air for ignition 647 T/Hr.
 Total air 915.5 T/Hr.
 Steam pressure 156Kg/Cm2
 eight of boiler 60 meters

16. In power plant we use three turbines ,High pressure turbine (H.P.T.),In power plant we use three turbines ,High pressure turbine (H.P.T.),
Intermediate pressure turbine (I.P.T.),Low pressure turbine (L.P.T.).Intermediate pressure turbine (I.P.T.),Low pressure turbine (L.P.T.).
In H.P.T. we used steam of high pressure (approx 170 kg/cm2 in 500 MW andIn H.P.T. we used steam of high pressure (approx 170 kg/cm2 in 500 MW and
approx 150 kg/cm2 250 MW) and high temperature near about 550*approx 150 kg/cm2 250 MW) and high temperature near about 550*cc..
In this turbine steam enters is known as main steam line (MS Line).In this turbine steam enters is known as main steam line (MS Line).
Due to this reaction shaft of the line rotate at the speed 3000 r.p.m. which isDue to this reaction shaft of the line rotate at the speed 3000 r.p.m. which is
connected to generator and thus electricity produced.connected to generator and thus electricity produced.

17. TURBINE SPECIFICATION
HP Turbine having 25 Blades & single flow.
IP Turbine having 17Blades & single flow.
LP Turbine having 8 Blades & Double flow.
Inlet /Outlet Pressure and Temperature
1.H P Turbine steam inlet/outlet pressure – 150Kg/Cm2
– 39.69 kg/Cm2
Inlet/outlet temperature – 537°C / 346°C
2.I P Turbine steam inlet/outlet pressure – 35.64Kg/Cm2
– 6.83 Kg/Cm2
Exhaust temperature – 305°C
3.L P Turbine steam inlet pressure – 6.83 Kg/Cm2
Exhaust temperature – 49°C
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18. TURBINES AUXILIARIESTURBINES AUXILIARIES
VACUUM SYSTEM:-
CONDENSER
CW PUMPS
CONDENSAT DEAERATORE SYSTEM:-
CONDENSATE EXTRACTION PUMPS (CEP)
LP HEATERS
DEAERATOR

19. COOLING TOWER
Cooling tower cool the warm waterCooling tower cool the warm water
discharge from the condenser and thedischarge from the condenser and the
feed cooled water back to thefeed cooled water back to the
condenser. It have a hot watercondenser. It have a hot water
distribution system that showers ordistribution system that showers or
spray water evenly over a lattice ofspray water evenly over a lattice of
horizontal slats or bars which is calledhorizontal slats or bars which is called
as fills.as fills.

20. FUNCTION HELD IN PLANTFUNCTION HELD IN PLANT
1. COAL FLOW
2. STEAM FLOW
3. WATER FLOW
4. ASH HANDLING

21. S.HEATER
R.H.
I.P L.P
condenser
H.P
STEAM FLOW

22. WATER FLOW
D.M.
PLANT
ECONOMIZER
B
O
I
L
E
R
C
O
N
D
E
N
S
E
R
HOT
WATER
COOL WATER
B.F.P
STEAM
COOLING
TOWER

23. The presence of dissolved gasesThe presence of dissolved gases
like oxygen,like oxygen,
Carbon dioxide in water makes theCarbon dioxide in water makes the
water ,water ,
as the react with the metal to formas the react with the metal to form
iron oxide .iron oxide .
The solubility of these gases inThe solubility of these gases in
water decrease with increase inwater decrease with increase in
temperaturetemperature
And becomes 0at the boiling orAnd becomes 0at the boiling or
saturation temperature.saturation temperature.

24. Economizer
Flue gases coming
out of the boiler
carry lot of heat.
An economizer
Extracts a part of
this heat from flue
gases and uses it
for heating feed
water. This use of
Economizer results
in saving coal
consumption and
boiler efficiency.
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25. MODIFIED RANKINE CYCLE

26. A condenser is a device where theA condenser is a device where the
exhaust steam from the turbine isexhaust steam from the turbine is
condensed operates at a pressurecondensed operates at a pressure
lower than atmosphere. There arelower than atmosphere. There are
two objectives of using condenser intwo objectives of using condenser in
a steam plant.a steam plant.
There are two types of condenser:-There are two types of condenser:-
1.1.Direct contact type condenser.Direct contact type condenser.
2.2.Surface condenser.Surface condenser.

27. OPERATIONAL FEATURES
INSIDE THE POWER PLANT

29. FLUE GAS HANDLING

30. Operation Mechanism
I. The coal is brought and crushed to powder. This is feed to boiler for
producing heat.
II. In boiler the water is converted to steam.
III. In super heater the moisture content is removed from the steam and that
steam is called superheated steam.
IV. The superheated steam rotates the shaft of the High Pressure Turbine.
V. The exhausted steam is sent to preheater and then rotates the Intermediate
Pressure Turbine.
VI. The steam from the IP turbine is feed to Low Pressure Turbine.
VII. The turbine shaft is connected to the Generator, which produces Electric
power.
VIII.The power generated is then Transmitted.
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31. Law of Conversation of energy
 Chemical Energy of fuel
 Heat Energy in Furnace
 Heat Energy of Medium Water
(H.P. Steam)
 Kinetic Energy of Turbine Rotor
 Electromotive force
 Electricity Generation
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32. Advantages of coal based thermal power plant
 A portion of the steam generated can be used
as a process steam in different industries.
 Steam engines and turbine can work under
25 % of overload continuously.
 Fuel used is cheaper.
 Cheaper in production cost in comparison
with that of diesel power stations.
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33. Disadvantages of coal based thermal power
plant
 Maintenance and operating costs are
high.
 Long time required for erection and
putting into action.
 A large quantity of water is required.
 Unavailability of good quality coal.
 Maximum of heat energy lost.
 Problem of ash removing.
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