PPT

1. BOILERS AND ITS AUXILIARIES
&
PLANT OVERVIEW
BY
SEELAMSETTI SESHA SAI 14891A0306
SAMA CHANDRASHEKHAR REDDY 14891A0349
VIGNAN INSTITUTE OF TECHNOLOGY &
SCIENCE HYDERABAD

2. BOILERS AND ITS
AUXILIARIES &
PLANT OVERVIEW

3. A ABOUT R.T.P.S
ABOUT R.T.P.S RAMAGUNDAM THERMAL POWER STATION IS AN EXISTING 62.5
MEGAWATT COAL-FIRED POWER STATION OWNED BY GOVT. OF
TELANGANA.
 THE POWER STATION IS LOCATED AT RAMAGUNDAM, KARIMNAGAR(DS),
TELANGANA, INDIA.
 R.T.P.S CAME INTO EXISTENCE IN OCTOBER 1972.
 THE RAW WATER TO THE PLANT IS DRAWN FROM THE RIVER GODAVARI
SITUATED ABOUT 8KM FROM THE PLANT.
 THE COAL IS RECEIVED TO THE POWER STATION BY ROAD AND RAIL FROM
GODAVARIKHANI OF SINGARENI COLLIERIES COMPANY LIMITED (SCCL).
 BOILER WAS DESIGNED FOR COAL QUALITY OF 4050CAL/KG WITH ASH
CONTENT OF 38.7%.

4. DIVISION OF A THERMAL POWER PLANT
 COAL HANDLING PLANT
 WATER TREATMENT PLANT
 FUEL AND ASH PLANT
 FEED WATER AND STEAM PLANT
 COOLING WATER PLANT

5. PLANT OVERVIEW

6. BOILER
 IN SIMPLE A BOILER
MAY BE DEFINED AS A
CLOSED VESSEL IN
WHICH STEAM IS
PRODUCED FROM WATER
BY COMBUSTION OF
FUEL.

7. TURBINE
 A TURBINE IS A ROTARY
MECHANICAL DEVICE THAT
EXTRACTS ENERGY FROM A FLUID
FLOW AND CONVERTS IT INTO
USEFUL WORK.
 THE WORK PRODUCED BY A
TURBINE CAN BE USED FOR
GENERATING ELECTRICAL POWER
WHEN COMBINED WITH A
GENERATOR.
 TURBINE IS THE HEART OF
THERMAL GENERATING STATIONS.
 IMPULSE REACTION TURBINE IS

8. GENERAT
OR
 AN ELECTRIC GENERATOR IS A
DEVICE THAT CONVERTS
MECHANICAL ENERGY OBTAINED
FROM AN EXTERNAL SOURCE
INTO ELECTRICAL ENERGY AS THE
OUTPUT.
 THE TURBINE IS STEAM-DRIVEN
WATER IS HEATED TURNS INTO
STEAM AND SPINS A STEAM
TURBINE WHICH DRIVES AN
ELECTRICAL GENERATOR.

9. TOWERS
 THE FUNCTION OF A COOLING TOWER
IS TO RELEASE THE EXCESS HEAT (OR
WASTE HEAT) TO THE ATMOSPHERE BY
COOLING DOWN HOT FLUID (WATER,
IN MOST CASES) TO A LOWER
TEMPERATURE.
 MANY COOLING TOWERS ARE MADE IN
A SPECIFIC CYLINDRICAL SHAPE; THEIR
BASE IS WIDE, THEY NARROW AT THE
MIDDLE, AND BECOME BROAD AGAIN
AT THE TOP. THIS SHAPE IS CALLED
“HYPERBOLOID”.
 CAN BE UP TO 200 METRES (660 FT)
TALL AND 100 METRES (330 FT) IN

10. BOILER TYPES
 HORIZONTAL & VERTICAL BOILERS
 FIRE TUBE BOILERS
 WATER TUBE BOILERS
 EXTERNALLY FIRED AND INTERNALLY FIRED BOILERS
 FORCED CIRCULATION AND NATURAL CIRCULATION
BOILERS
 HIGH PRESSURE AND LOW PRESSURE BOILERS
 STATIONARY AND PORTABLE BOILERS

11. WATER TUBE
BOILER
 IN WATER TUBE BOILERS, THE
WATER IS INSIDE THE TUBES
AND HOT GASES SURROUND
THEM.
 EX: BABCOCK AND WILCOX
ETC…
 THE WATER TUBE BOILER ARE
USED EXCLUSIVELY, WHEN
PRESSURE ABOVE 10 BAR AND
CAPACITY IN EXCESS OF 7000

12. PARTICULARS RELATING TO THIS BOILER
 DIAMETER OF THE DRUM … ….. 1.22 TO 1.83 M
 LENGTH …....... 6.096 TO 9.144
M
 SIZE OF WATER TUBES …….. 7.62 TO 10.16
CM
 SIZE OF SUPER HEATERS .……. 3.84 TO 5.71 CM
 WORKING PRESSURE …….. 40 BAR (MAX.)
 STEAMING CAPACITY ……... 40000 KG/H
(MAX.)

13. FEED PUMPS
• A BOILER FEEDWATER PUMP IS A
SPECIFIC TYPE OF PUMP USED
TO PUMP FEEDWATER INTO
A STEAM BOILER.
• IT IS DESIRABLE THAT THE
QUANTITY OF WATER SUPPLIED
SHOULD BE AT LEAST EQUAL TO
THAT EVAPORATED AND
SUPPLIED TO THE ENGINE.

14. ECONOMIZER
 AN ECONOMIZER IS A DEVICE
IN WHICH THE HEAT OF THE
FLUE GASES IS UTILIZED FOR
HEATING THE FEED WATER.
 EVAPORATIVE CAPACITY OF
BOILER IS INCREASED.
 OVERALL EFFICIENCY OF THE
PLANT IS INCREASED
 IN RTPS VERTICAL FINNED
TUBE TYPE ECONOMIZER IS
USED.

15. AIR
PREHEATER
 THE FUNCTION OF AIR
PREHEATER IS TO INCREASE THE
TEMPERATURE OF AIR BEFORE IT
ENTERS THE FURNACE.
 IT IS GENERALLY PLACED AFTER
THE ECONOMIZER.
 LJUNGSTROM AIR PREHEATER IS
USED IN 62.5MW RTPS.
 SPEED RATIO – 104.9:9
 SUPPORT BEARING – SKF 29468E

16. SUPER
HEATER
 THE FUNCTION OF SUPER
HEATER IS TO INCREASE THE
TEMPERATURE OF THE
STEAM ABOVE ITS
SATURATION POINT.
 PENDENT TYPE SUPER
HEATER IS USED IN 62.5MW
RTPS.
 EROSION OF TURBINE BLADE
IS ELIMINATED.
 EFFICIENCY OF THE STEAM

17. INJECTO
R THE FUNCTION OF AN INJECTOR
IS TO FEED WATER INTO BOILER.
 IT IS COMMONLY EMPLOYED FOR
VERTICAL AND LOCOMOTIVE
BOILERS.
 IN AN INJECTOR THE WATER IS
DELIVERED TO THE BOILER BY
STEAM PRESSURE.
 THERMAL EFFICIENCY IS HIGH
(99%).
 PUMPING EFFICIENCY IS LOW.

18. STEAM
SEPARATOR A STEAM SEPARATOR IS A DEVICE USED
FOR SEPARATING WATER DROPLETS
FROM STEAM.
 THE FIGURE SHOWS BAFFLE PLATE
STEAM SEPARATOR.
 STEAM SEPARATORS ARE BASICALLY OF
3 TYPES
BAFFLE TYPE
REVERSE CURRENT TYPE
CENTRIFUGAL TYPE

19. STEAM
TRAP THE FUNCTION OF A
STEAM TRAP IS TO DRAIN
AWAY AUTOMATICALLY
THE CONDENSED STEAM
FROM THE STEAM PIPES,
STEAM JACKETS AND
STEAM SEPARATORS
WITHOUT PERMITTING ANY
STEAM TO ESCAPE.
 STEAM TRAPS ARE 2
TYPES
 EXPANSION TYPE

20. COAL HANDLING
PLANT
 COAL IS ONE OF THE MOST
IMPORTANT FUELS FOR
GENERATING ELECTRICITY IN
THERMAL POWER PLANTS
THROUGH OUT THE WORLD.
 ACTIVE SUBSTANCES ARE
CARBON, HYDRO-CARBON,
SULPHUR., ETC….
 COAL IS CLASSIFIED INTO 3
MAJOR TYPES…
 ANTHRACITE
 BITUMINOUS
 LIGNITE

21. GRADE GROSS CALORIFIC
VALUE
RANGE (IN KCAL/KG)
A EXCEEDING 6200
B 5600-6200
C 4940-5600
D 4200-4940
E 3360-4200
F 2400-3360
G 1300-2400
IN RTS-B, BITUMINOUS COAL (GRADE C, D, E)
IS IN USE

22. ASH HANDLING PLANT
 IN THERMAL POWER PLANT’S COAL
IS GENERALLY USED AS FUEL AND
HENCE THE ASH IS PRODUCED AS
THE BYPRODUCT OF COMBUSTION.
ASH GENERATED IN POWER PLANT IS
ABOUT 30-40% OF TOTAL COAL
CONSUMPTION.
 ASH GENERATED FROM COAL-
FIRED BOILER IS GENERALLY OF 2
TYPES
 BOTTOM ASH AND FLY ASH
 HEAVY PARTICLES OF ASH
COLLECTED AT BOTTOM OF BOILER
IS CALLED BOTTOM ASH.
 ASH GENERATED IN ESP WHICH GOT
CARRIED OUT WITH FLUE GAS IS FLY

23. THANK
YOUPRESENTED
BY
SEELAMSETTI SESHA SAI
14891A0306
SAMA CHANDRASHEKHAR REDDY