1. SURATGARH SUPER THERMAL POWER
STATION

2. Introduction
1. Suratgarh thermal power station is the first super
thermal power Station of Rajasthan with total
installed capacity of 1500 MW.
2. Suratgarh super thermal power station is located
27 km away from Suratgarh town in
Ganganagar Dist. on the left bank of IGNP at Up
Stream of Suratgarh Barrage.
3.This station is operated and maintained by Rajasthan
Vidhyt Utpadan Nigam Limited.

3. S.S.T.P.S. is designed in six stages
•STAGE I - 1x250 MW
•STAGE II - 1X250 MW
•STAGE III - 1X250 MW
•STAGE IV - 1X250 MW
•STAGE V 1X250 MW
•STAGE VI - 1X250 MW
•STAGE VII- 1X660MW(Under construction)
•STAGE VIII- 1X660MW(Under construction)
Total Power Generation - 1500 MW

4. BLOCK DIAGRAM OF THERMAL
POWER PLANT

5. Raw coal from bharat To SSTPS from gudla Wagon
coal ltd. Dhanbad & via a single railway tippler
bilaspur(MP) track
bunkers Crusher house hoppers
Raw coal Coal mills
feeders (pulverization)
Boiler furnace ( tangential firing of
pulverized coal)

6. Steam Boiler
1.The utility boilers are large capacity steam generators
used for the electrical power generation.
2. In boiler heat energy is released from the combustion
of fossils fuel and heat is transferred to different
fluids in the system.
3. The boiler installed in S.T.P.S. are single drum,
tangential fired water tube naturally circulated
over hanged, pulverizing coal firing with a
max. Continuous steam output of 375 tons/hour at
138 kg/cm2 pressure and 5400C temperature.
4. Heat transfer section in boiler
4.1 Furnace : Furnace is the primary element part of the
boiler where the chemical is obtained by combustion.

7. BOILER: stack
Super
Boiler water tubes
DM water heated
& various stages
steam
Flue gases
Air from Boiler Ash
environment furnace handling
via draft fans plant
Pulverized
coal

8. 2.The major fuels used in the steam generation are coal
oil and gas.
3. In furnace the whole combustion region is surrounded
by tubes through which water flows.
BOILER AUXILLARIES
4.2 SUPER HEATER: Superheats are meant to raise the
tem. of steam by absorbing heat from flue gases steam them.
2. Super heater eliminates the formulation of condensate
during transporting of steam in pipelines and inside the
early stages of turbine, which is harmful to the turbine
blades and pipelines .
3. Superheated steam is led into the H.P. turbine through
main steam stop valve.
After doing the useful works in the H.P. turbine the

9. steam is returned to reheater through the cold reheat lines.
4. The superheataer may be made in the form of coils and
platens.
4.3 Reheater: Reheater are used to raise the temp. of steam
from which point the energy had been extracted in H.P.
turbine with increasing no. of reheating stages. Reheating is
continuing till temp. of steam is reaches to 5400C.
2. Superheaters and reheaters tubes are made of 50 to 75
mm outside diameter.
4.4 Economizer :
The function of an economizer in a steam-generating
unit is to absorb heat from the flue gases and add this as
sensible heat to fed water. It acts like feed water heater.

10. The size of economiser tubes are 45 to70mm in outside
diameter .
The water flow must be uniform to avoid the steam formation
in economiser.
4.4Air Preheater:Air preheater is a heat exchanger in which
preheating of air done by transferring heat from the flue gas
before supplying to the combustion chamber.For better
combustion the air temp.250to350 is always desired .
The preheating of air results:
1.Improved combustion
2.Saving in fuel consumption
3.Thermal efficiency.

11. Flow of
steam
Super
Boiler Boiler turbine
heaters &
drum tubes
reheater
condenser
economiser FWP
DM water plant

12. Steam turbine
Turbine is a prime mover in which a shaft is rotate by
impact or reaction of stream of working substance
( steam, water, gases etc) upon blades of a wheel. It
converts the potential or kinetic energy of the working
substance into mechanical power by dynamic action
of working substance. When the working substance is
steam it is called the steam turbine. There are no. of
blades alternatively fix & rotate due to which velocity
is increased & pressure is decreased.
Principle of operation : . The steam is caused to fall
in pressure in a passage of nozzle: doe to this fall in
pressure a certain amount of heat energy is converted

13. In to moving with a greater velocity. The rapidly moving
particles of steam suffer a change in direction of
motion which gives change of momentum and therefore
to a force.
IMPULSE TURBINE: The passage of steam through moving
part of turbine in such a manner that the pressure at the outlet
side of the blade is equal to that at the inlet inside. Such a
turbine is broadly termed as impulse turbine.
IMPULSE REACTION TURBINE: Pressure of the steam
at outlet from the moving blade may be less than that at the
inlet side of the blades; the drop in pressure suffered by the
steam during its flow through the moving causes a further
generation of kinetic energy within the blades and adds to the
propelling force which is applied to the turbine rotor. Such a
turbine is broadly termed as impulse reaction turbine.

14. MOVING BLADES

17. FIXED BLADES

18. Rotor Layout

19. High pressure turbine: The HP turbine consists of 25
reaction stages. The moving and stationary blades are
inserted into appropriately shapes into inner casing and the
shaft.
Intermediate pressure turbine: The steam from HP
turbine after reheating enters the inner casing from above
and below through two inlet nozzles.
The IP turbine consists of 20 reaction stages per flow. The
moving and stationary blades are inserted in appropriately
shaped grooves in shaft and inner casing.
Low pressure turbine: Steam admitted to LP turbine
from IP turbine flows into the inner casing from both sides
through steam inlet nozzles.

20. GENERATOR:
MECHANICAL ELECTRICAL
ENERGY ENERGY
 TWO POLE TYPE; WITH CYLINDRICAL
ROTOR
 BASIC PRINCIPLE :FARADAY’s LOW OF
MAGNETIC INDUCTION
 COOLING:
 STATOR WINDING-DIRECT WATER COOLING
 ROTOR WINDING – HYDROGEN COOLING