A PRACTICAL TRAINING SEMINAR ONKOTA SUPER THERMAL POWER STATION,KOTA

GOVT. ENGG. COLLEGE BHARATPUR

Presented to :- Mr. Rahul Srivastava

Presented by:- Pukhraj maliBranch :- Mechanical Engineering Semester :- 7th sem.

KSTPS is first coal based power plant in Rajasthan.

It is located ideally on the left bank of chambal river at the upstream of kota barrage.

In 1973 Central Electricity Authority prepared a project report for power station.

In 1976 Planning Commission cleared project report.

Its first unit of capacity 110 MW is synchronized on 17 Jan 1983.

ABOUT KsTPS

DESIGN

STAGES

Unit 6 – 195 MW

Cost : 635

Unit 1 –110 MW

Unit 2 – 110 MW

Cost : 143Unit 3 – 210

MWUnit 4 – 210

MWCost :

480

Unit 5 – 210 MW

Cost : 480

Unit 7 – 195 MW

Cost : 880

Stage IIStage III

Stage IV

Total Electricity Generation: 1240 MW* All costs are in cores (Rs.)

SALIENT FEATURES LOCATION

Ideally on the left bank of Chambal River at Up Stream of

Kota Barrage.

COALCoal India limited supply coal from its coal producing subsidiaries BCCL, SECL & ECL through railway wagons

WATERThe source of water for power station is reservoir formed by Kota Barrage on the Chambal River

LANDLand measuring approx. 250 hectares was required for the project in 1976

GENERAL LAYOUT AND BASIC IDEA:The conversion from coal to electricity takes

place in three stages.Stage 1The first conversion of energy takes place in the

boiler. Coal is burnt in the boiler furnace to produce heat. Carbon in the coal and Oxygen in the air combine to produce Carbon Dioxide and heat.

Stage 2The second stage is the thermodynamic process.The heat from combustion of the coal boils

water in the boiler to produce steam. In modern power plant, boilers produce steam at a high pressure and temperature. 

The steam is then piped to a turbine. The high pressure steam impinges and expands

across a number of sets of blades in the turbine. 

The impulse and the thrust created rotates the turbine. 

The steam is then condensed and pumped back into the boiler to repeat the cycle.

Stage 3In the third stage, rotation of the turbine rotates

the generator rotor to produce electricity based of Faraday’s Principle of electromagnetic induction.

Control system of station is based on Rankin Cycle.To increase the heat economy and efficiency we use

number of modification in the plant.

PLANT OVERVIEW

COAL HANDLING PLANT

SALIENT FEATURESThe coal is brought to the KSTPS from BHARAT COKING COAL LTD.There are 14 tracks for transportation.Everyday 3- 4 trains of coal are unloaded, each train consists 58 wagons.Coal is unloaded from wagons by means of WAGON TRIPPLER.a. Wagons are rotated upside down through an angle 180 degree.b. The unloaded coal is transported to crusher house with the help of conveyer belts.

BOILERBoiler is a closed vessel

in which water, under pressure, is converted into steam by absorbing heat released in process of combustion.

In KSTPS boiler used is water tube; pulverised fuel fired; single drum type; tangential firing system.

Technical Specifications 1).Type Water Tube Boiler

2).Make BHEL

3).Capacity 375 tonnes per hour

4).Steam pressure 139 kg/ sq. cm

5).Efficiency 86.6%

6).Steam temperature 540 deg.

Boiler componentsBrief description:

Air pre heater Heat energy contained by flue gases is utilized to increase the temperature of air entering the boiler.

Reheater Heats up steam going from high pressure turbine to intermediate pressure turbine.

Super heater Removes moisture present in steam going to turbine.

Economiser Flue gases leaving boiler is passed through economiser to increase temperature of water entering boiler drum.

STEAM TURBINE

INTRODUCTION

Steam Turbine is a machine in which a shaft is rotated steadily by impact or reaction steam upon blades of a wheel.

It converts the potential or kinetic energy of the working substance into mechanical power by virtue of dynamic action of working substance.

PRINCIPLE OF OPERATION Working of the steam turbine depends

upon the dynamic action of Steam.

The steam is caused to fall in pressure in a passage of nozzle: due to this fall in pressure a certain amount of heat energy is converted into mechanical kinetic energy and the steam is set moving with a greater velocity.

STEAM

TURBINE BOILER &

SUPERHEATER

M P TURBINE

H P TURBINE

L P TURBINE

REHEATER

STEAM AT 545 C

STEAM AT 545 C

STEAM AT 535 C

STEAM AT 535 C

TURBO GENERATORDesigned for continuous operation at the

rated output.Directly coupled with steam turbine, rotated

at high speed of 3000 RPM.Two major parts:- (i) Stator (ii) RotorMajor parts of stator are (i) Stator frame. (ii)Stator core. (iii)Stator bars. (iv)Stator windings.

CONDENSERCondenses steam coming out from turbine back

into water

Cooling SystemIn KSTPS hydrogen cooling system

is employed for generator cooling.Hydrogen is used because of its

superior cooling properties & low density.

Thermal conductivity of H2 7.3 times of air.

Seal oil system are used in turbine for less friction in bearing.

Water cooling also used for any kind of fire.

ASH HANDLING PLANT

This plant can be divided into three sub plants as follows :-

1)Fuel and Ash Plant:- It is specially designed for bottom ash and fly ash

in electro static precipitator economizer and air pre-

heaters hoppers.2)Air and Gas Plant:- The flue gases after passing through the Electro- Static Precipitator is exhausted through chimney.3) Ash Disposal and & Dust Collection Plant:- Dry free fly ash is collected in two number of 31 fly ash

hopper which are handled by two independent fly ash system.

Thank You