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BOILERS AND OVER VIEW OF
KTPP
R.SANKEERTHAN REDDY (14D41A03D0)
ABSTRACT
• The main aim of this project is to study various types of
electrical and mechanical equipment involved in the
process of generation of electrical power.
Introduction
• The basic principle involved is Faraday’s law of electro-magnetic
induction i.e. “whenever a conductor cuts a magnetic flux EMF is
induced across its ends”.
• The very first thing we need to provide is a conductor cutting
magnetic flux. So this can be done in two basic ways i.e. either the
conductor can be moved in the magnetic field or the field can be
varied according to the required emf that is to be generated. The
process we follow here is we rotate the rotor of a generator in the
magnetic field and emf is generator at the stator and this generated
emf is further utilized according to the purpose.
Coal handling plant
The lumped coal is collected from
coal mines through Lorries and
stored in coal yard. By using
bulldozers coal is dumped in
ground hopper. Coal from the
ground hopper gets loaded on the
conveyor belt system. The
received coal is fed to the surge
hopper of the crusher house. In
the crushers coal would be sized
in 20mm.
• The coal flow is shown below
Coal storage plant
Crushers
Bunkers
Mills
boiler
Boilers
• A boiler is a device for
generating steam for power,
processing or heating purpose.
• The boiler used here is a two
pass, tower type, reheat natural
circulation single drum, balanced
draft and dry bottom (open
hopper type) boiler and is
designed for burning coal as
principal fuel.
Economiser
• An economizer extracts
apart of this heat from
the flue gases.
• It uses extracted heat
for heating the feed
water before it entres
into the steam drum.
Induced draft fan (ID fan)
– The function of induced draft fan is to suck
the gases out of furnaces and throw them into
the stack
– Boiler is provided with two no. of induced
draft fans
Forced draft fan
(FD fan)
– The function of fd fan is to
supply sufficient quantity of air
required for complete combustion.
– The air flow is shown below
Ash handling
plant
– At the bottom of the furnance ,
there is a hopper for collection of
bottom ash.
– Fly ash is captured an removed
from the flue gas by electrostatic
precipitators.
– The flow of ash is shown below
Steam turbine
– Steam turbine is a rotating
machine whih converts the heat
energy of steam into mechanical
energy.
Descripition of steam
turbines
• HP TURBINES
• IP TURBINES
• LP TURBINES
HP TURBINES
– In high pressure turbines steam is expanded
to do work
– High pressure turbines having 25 reaction
stage . Steam admitted at 540*c and pressure
150kg/sq.cm.
Types of turbines
• IP turbine
• Exhaust steam from hp turbine , after passing through re heater is
admitted for second phase of expansion of steam.
• Ip turbine having 17 reaction stages.
• Low pressure turbines
• Exhaust steam from ip turbine admitted to ip turbine for the last
phase of expansion of steam.
• LP turbine having 8 reaction stages
Conclusion
In the conditional monitoring, we test the equipment to avoid the forced outage. If faults are found to
be occurring outages can be planned and the fault can be rectified before major occur. With strict
monitoring, accurate diagnostics interpretations and realistic operational/ maintenance.
Strategies implementation the following would be achieved effectively:
• Improvement in the system performance ensuring good reliability as well as plant availability.
• Minimization of the long-term operational cost.
• Cost saving by eliminating the unplanned maintenance.
• Minimizing the outage period.
• Relocation/ retirement planning.
• In time procurement of spare parts.
• Premature failures risk minimization.
• Remnant life estimation and timely asset replacement/ retiring planning.

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Boilers

  • 1. BOILERS AND OVER VIEW OF KTPP R.SANKEERTHAN REDDY (14D41A03D0)
  • 2. ABSTRACT • The main aim of this project is to study various types of electrical and mechanical equipment involved in the process of generation of electrical power.
  • 3. Introduction • The basic principle involved is Faraday’s law of electro-magnetic induction i.e. “whenever a conductor cuts a magnetic flux EMF is induced across its ends”. • The very first thing we need to provide is a conductor cutting magnetic flux. So this can be done in two basic ways i.e. either the conductor can be moved in the magnetic field or the field can be varied according to the required emf that is to be generated. The process we follow here is we rotate the rotor of a generator in the magnetic field and emf is generator at the stator and this generated emf is further utilized according to the purpose.
  • 4. Coal handling plant The lumped coal is collected from coal mines through Lorries and stored in coal yard. By using bulldozers coal is dumped in ground hopper. Coal from the ground hopper gets loaded on the conveyor belt system. The received coal is fed to the surge hopper of the crusher house. In the crushers coal would be sized in 20mm. • The coal flow is shown below Coal storage plant Crushers Bunkers Mills boiler
  • 5. Boilers • A boiler is a device for generating steam for power, processing or heating purpose. • The boiler used here is a two pass, tower type, reheat natural circulation single drum, balanced draft and dry bottom (open hopper type) boiler and is designed for burning coal as principal fuel.
  • 6. Economiser • An economizer extracts apart of this heat from the flue gases. • It uses extracted heat for heating the feed water before it entres into the steam drum.
  • 7. Induced draft fan (ID fan) – The function of induced draft fan is to suck the gases out of furnaces and throw them into the stack – Boiler is provided with two no. of induced draft fans
  • 8. Forced draft fan (FD fan) – The function of fd fan is to supply sufficient quantity of air required for complete combustion. – The air flow is shown below
  • 9. Ash handling plant – At the bottom of the furnance , there is a hopper for collection of bottom ash. – Fly ash is captured an removed from the flue gas by electrostatic precipitators. – The flow of ash is shown below
  • 10. Steam turbine – Steam turbine is a rotating machine whih converts the heat energy of steam into mechanical energy.
  • 11. Descripition of steam turbines • HP TURBINES • IP TURBINES • LP TURBINES HP TURBINES – In high pressure turbines steam is expanded to do work – High pressure turbines having 25 reaction stage . Steam admitted at 540*c and pressure 150kg/sq.cm.
  • 12. Types of turbines • IP turbine • Exhaust steam from hp turbine , after passing through re heater is admitted for second phase of expansion of steam. • Ip turbine having 17 reaction stages. • Low pressure turbines • Exhaust steam from ip turbine admitted to ip turbine for the last phase of expansion of steam. • LP turbine having 8 reaction stages
  • 13.
  • 14. Conclusion In the conditional monitoring, we test the equipment to avoid the forced outage. If faults are found to be occurring outages can be planned and the fault can be rectified before major occur. With strict monitoring, accurate diagnostics interpretations and realistic operational/ maintenance. Strategies implementation the following would be achieved effectively: • Improvement in the system performance ensuring good reliability as well as plant availability. • Minimization of the long-term operational cost. • Cost saving by eliminating the unplanned maintenance. • Minimizing the outage period. • Relocation/ retirement planning. • In time procurement of spare parts. • Premature failures risk minimization. • Remnant life estimation and timely asset replacement/ retiring planning.