Presented by Presented to:- Mr.Rajan Karir Associate Professor A PRACTICAL TRAINING SEMINAR ON KOTA SUPER THERMAL POWER STATION,KOTA UCE, RTU, Kota

 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.

STAGES Unit 6 – 195 MW Cost : 635 Unit 1 –110 MW Unit 2 – 110 MW Cost : 143 Unit 3 – 210 MW Unit 4 – 210 MW Cost : 480 Unit 5 – 210 MW Cost : 480 Unit 7 – 195 MW Cost : 880 Stage II Stage III Stage IV Total Electricity Generation: 1240 MW * All costs are in crores (Rs.)

SALIENT FEATURES LOCATION Ideally on the left bank of Chambal River at Up Stream of Kota Barrage.The 220 KV GSS is within ½ Kms. COAL Coal India limited supply coal from its coal producing subsidiaries BCCL, SECL & ECL through railway wagons WATER The source of water for power station is reservoir formed by Kota Barrage on the Chambal River LAND Land 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 1 The 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 2 The 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 3 In 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.

COAL HANDLING PLANT

SALIENT FEATURES  The 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.

Conveying system Belt are used to convey coal from coal handling plant to furnance. Specification:- Belt width : 1400mm Speed : 2.2m/sec Total install power : 360kw Capacity : 1350/750 ton/hr No. of conveyor: 38

WATER TREATMENT PLANT

 Raw water is converted into drinking water by ALUM+CHLORINE.  This water is send to D.M. plant,where it is converted into demineralised water.  Mainly impurities like Mg,CaCO3,& MgSO3 are removed by reacting the water with resins in large tanks in D.M. water plant  D.M. water costs approx. 6 Rs./lit.

 Boiler 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).MakeBHEL  3).Capacity375 tonnes per hour  4).Steam pressure139 kg/ sq. cm  5).Efficiency86.6%  6).Steam temperature 540 deg.

 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.

The rapidly moving particles of steam, enter the moving part of the turbine and here suffer a change in direction of motion which gives rose to change of momentum and therefore to a force. This force causes rotation & so as alternator rotates & generates electricity.

TYPES OF TURBINES: 1. Simple impulse steam turbine. 2. The pressure compounded impulse turbine. 3. Simple velocity compounded impulse turbine. 4. Pressure-velocity compounded turbine. 5. Pure reaction turbine. 6. Impulse reaction turbine.

STEAM TURBINE BOILER & SUPERHEATER M P TURBINE H P TURBINE L P TURBINE REHEATER STEAM AT 545 C STEAM AT 535 C

TECHNICAL DATA OF 110 MW TURBINE 1. Rated output : 110 MW. 2. Economic output : 95 MW. 3. Rated speed : 3000 rpm 4. Direction of rotation viewing from : Clockwise the front bearing pedestal. 5. Rated temperature of steam before : 535 o C the stop valve. 6. Maximum temperature of steam before : 545 o C the stop valve.

TECHNICAL DATA OF 210 MW TURBINE Rated Output : 210 MW. Rated Speed. : 3000 rpm. Main steam pressure. : 150 Kg./Cm 2 Main steam temperature. : 535 o C. Reheat steam temperature. : 535 o C. Weight of turbine. : 475 T approx. Overall length. : Mtrs. approx.

 Designed 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) Rotor  Major parts of stator are (i) Stator frame. (ii)Stator core. (iii)Stator bars. (iv)Stator windings.

 Condenses steam coming out from turbine back into water

Cooling System In 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.

 Used to cool down hot water coming from condenser.  Warm water is feed to the top; the water droplets falling from the top come in contact with air,lose heat to the air and get cooled.

ELECTROSTATIC PERCIPITATOR E.S.P HIGH VOLTAGE VERTICAL STEEL PLATES (CURTAINS) EXHAUST GAS SEPARATE DUST PARTICLES (BOTTOM ASH ) CHIMNEY

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.

FURNACE HOPPERS CHIMNEY ESP FLY ASH & FLUE GASES DRY & WET ASH TRANSPORTED TO CEMENT FACTORIES ETC. ASH HANDLING PLANT EXHAUSTED GASES