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PRESENTATION
ON THERMAL
POWER PLANT
By : B.MOUNIKA
13J41A0311
B.TECH. 4th Year
Mechanical Engg.
MREC, Secunderabad.
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PROCESS OF THE PLANT
Receiving Coal, Generating Steam, Rotation of Steam
Turbine,Generation of Electricity.
RAW MATERIAL – Fuel – Coal
Coal linkage from Mahanadi Coal Fields,
Talcher, Orissa.
Consumption: Average 20000 T / day
7 million tonnes / annum
MEDIUM – DM Water, Cooling Water, Lubricants
PRODUCT – Electricity at 15.75 KV, stepped up to 220 KV
Daily Generation – 30.24 MU at Full Load
10000 MU in a year.
BY PRODUCT – Fly Ash, Pond Ash
% Utilisation – 40 %
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INTRODUCTION
The major equipment in Thermal Power Stations are:-Boiler,Turbine,Generator, Power transmission and Equipment
In Boiler, fuel is fired and steam is generated and superheated under high Pressure. This superheated steam under high pressure is supplied to High Pressure Cylinder of steam turbine and expanded. The Low Pressure exhaust steam from H.P cylinder is taken again to the boiler and reheated.
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The power plant cycle is divided into a number of Sub. cycles
each of which has its own instrumentation system and
simultaneously interacting with other cycles.
The broadly classified cycles are :-
Water cycle that includes the condensation, make up,
demineralization heating and deaeration, feed pump and
economizer.
Combustion cycle consisting of economizer, boiler super heaters
and reheater.
Steam cycle with boiler, superheaters, reheaters and turbines
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MAIN PARTS OF THERMAL POWER
STATION
• Coal handling plant
• Pulverizing plant
• Boiler
• Super heater
• Steam Turbine
• Economizer
• Generator
• Water Treatment Plant
• Ash handling plant
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Coal Handling Plant
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COAL WAGONS[55-60IN EACH RAKE]
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WAGON UNLOADING SYSTEM
Unload the coal from
wagon to hopper
with the help of
wagon Tripler.
Hopper allows to
pass coal pieces ≤
200mm
From hopper coal fall
on vibrator which is
supported by roller.
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CONVEYING SYSTEM
Belt are used to convey coal from coal handling plant to furnace.
Specification:- Belt width : 1400mm
Speed : 2.2m/sec
Total install power : 360kw
Capacity : 1350/750 ton/hr
No. of conveyor: 38
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PULVERIZED
FUEL FIRING
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BOILER
It is a closed vessel in which water under pressure is converted into steam.
Hot water or steam used to transfer heat to a process.
A boiler is always designed to absorb maximum amount of heat released in process of combustion.
Furnace:- It is primary part of boiler where the fuel is burnt to liberate the heat energy.
Chemica
l Energy
of fuel
Thermal
Energy by
combustion
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FIGURE BOILER
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STEAM TURBINE
It is a machine in which a shaft is rotated steadily by reaction of steam, air upon blades of a wheel.
When Steam is used then it is called steam turbine.
It works on Modified Rankine cycle.Kinetic
Energy
Mechanical
Energy
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•An electrical generator is a machine which converts mechanical energy into electrical energy through electro mechanical energy conversion .
•The generator is driven by directly coupled steam turbine at a speed of 3000 r.p.m.
Electrical
Energy
Mechanical
Energy
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WATER TREATMENT PLANT
Pressure filter removes undisclosed impurities from
raw water.
Carbon filter removes excess chlorine from clarified
water.
D.M. plant removes dissolved impurities from clarified
water.
Conductivity ,pH & silica content of this water must be
checked time to time.
D.M. water must be in the
ratio of 1:8
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ASH HANDLING PLANT
In thermal plants 25% is furnace bottom ash and 75% is pulverized fuel ash.
Electrostatic Precipitator is used in ash handling plant to remove fly ash.
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THANK YOU…!!!
&
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