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A Presentation OnSummer TrainingAtSURATGARH SUPER THERMAL POWER STATION Submitted to Mrs. Jyoti Jain

Submitted by:- Harshit Madaan B.TECH. 3rd year(EEE) 00215004914

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Suratgarh Super Thermal Power Station2

Suratgarh Super Thermal Power Station

SURATGARH THERMAL POWER STATION IS THE FIRST SUPER THERMAL PLANT OF RAJASTHAN.

IT HAS INSTALLED CAPACITY OF 1500 MW POWER , WHICH IS HIGHEST IN THE STATE.SIX UNITS IN SURATGARH THERMAL POWER STATION AND EACH ONE OF THEM HAS CAPACITY OF 250 MW POWER .

(250*6=1500)MW

INTRODUCTION

SSTPS PROGRESS AT A GLANCESTAGENO.UNIT No.CapacityDate Of Commercial RunStatus1.UNIT 1. 250 MWMAY,1998RUNNING2.UNIT 2. 250 MWMARCH,2000RUNNING3.UNIT 3. 250 MWOCTOBER,2001RUNNING4.UNIT 4. 250 MWMARCH,2002RUNNING5.UNIT 5. 250 MWJUNE,2003RUNNING6.UNIT 6. 250 MWMARCH,2009RUNNING

Definition Of Thermal Power StationAthermal power stationis a power plantin which thePrime moverissteamdriven. Water is heated, turns into steam and spins asteam turbinewhich either drives anelectrical generator or does some other work, likeship propulsion. After it passes through the turbine, the steam is condensedin acondenserand recycled to where it was heated; this is known as aRankine cycle. The greatest variation in the design of thermal power stations is due to the different fuel sources. Some prefer to use the termenergy centerbecause such facilities convert forms of heatenergyinto electrical energy.

Coal StorageCoal Handling PlantAsh StorageAsh Handling PlantBoilerSuper HeaterEconomizerAir Pre-heaterGeneratorExciter

Turbine

ChimneyFeed Water HeaterDeaeratorCondenserCooling Tower

Make up WaterAirCoal Ash

COAL

ASH

STEAMWATERFLUE GASES6

Operations In Thermal Power Station

Step wise operations in a thermal power plant are as follows:-Coal is used as a fuel to boil the water.Water is boiled to form pressurized steam.Pressurized steam is the force that cause the turbine to rotate at a very high speed. Low pressure steam after pushing through the turbine ,its going into the condenser.Condenser the place where the steam is condensed back it its liquid form .Then the process is repeated

COAL HANDLING PLANTCoal Comes from M.P.(Bilaspur) & Chhattisgarh.Raw coal is transported from coal mines by railways.Coal is unloaded from wagons by wagon tippler. 1. Wagons are rotated upside down through an angle of 180 degrees. 2. coal is manually crushed then it pass through crusher transported to crusher house with the help of conveyer belts.Crusher crushes coal to a size of 20mm.Then coal is sent to pulvarizing mill.

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UNLOADDISCHARGED TO UNDER-HOPPERCRUSHING HOUSEBUNKERCOAL MILLSEND TO DIRECT FIRINGFURNANCERAW MATERIALTHROUGH TRAINUSING WAGON TRIPLERTO FORM PULVERISED COALPROCESSING OF COAL HANDLING PLANT

METAL PART SEPERATOR

BUNKERS

It consists of crushers which are used to crush the coal to 20 mm. size. There are mainly two type of crushers working in SSTPS:-Primary Crushers i. e. i) Rail crushers or ii) Rotary breaker.Secondary Crushers i. e . Ring granulators.CRUSHER

COAL MILL / COAL MILL INSIDE VIEW

This plant can be divided into 3 sub plants as follows:-1) Fuel and Ash Plant.2) Air and Gas Plant.3) Ash Disposal and & Dust Collection plantASH HANDLING PLANT

UTILIZATION OF ASH1.Manufacturing of building materials.2. Making of concrete.3. Manufacturing of cement.4. Road construction etc.

BOILER Water is converted into steam inside the boiler.

Coal is burnt inside boiler.

Generated heat is used to generate steam.

WATER TUBE BOILER are used in SSTPS.

HEIGHT OF BOILER :- 60 METER

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Fire tube boiler:-

In this type the products of combustion pass through the tubes which are surrounded by water. These are economical for low pressure only.. Water tube boiler:-

In this type of boiler water flows inside the tubes and hot gases flow outside the tubes. These tubes are interconnected to common water channels and to steam outlet.The water tube boilers have many advantages over the fire tube boilersHigh evaporation capacity due to availability of large heating surface.Better heat transfer to the mass of water.Better efficiency of plant owing to rapid and uniform circulation of water in tubes.Better overall control.TYPES OF BOILER

WATER TUBE BOILER18

Technical Specification

1).Type Water Tube Boiler 2).Make BHEL3).Capacity 780 tones per hour4).Steam pressure 150kg/ sq. cm5).Efficiency 90%6).Steam temperature 550 deg.c

SUPER HEATER20Super heater is used to remove the moisture content from the steam.The steam at pressure 140 kg/m and 530 degree C is passed to the super heater from boiler drum.Super heater raises the temperature of steam above 540 degree C.Steam is passed to the hpt.Advantages of super heater 1. Increases efficiency 2. Reduces corrosion of turbine blades.

ECONOMISER21Flue gases coming out of the boiler carries lot of heat.ECONOMISER extracts a part of heat from the flue gases and uses for heating the feed water.Thus improves efficiency of plant. Temp. inside ECONOMISER is about 315 deg c.

ECONOMISER 22

AIR PREHEATERIt is used to preheat the air before entering into furnace.

It is a heat exchanger in which some further heat is extracted from the flue gases and use to heat the coming air for combustion.

In SSTPS regenerative type air pre-heater is used.

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E.S.P:-

The full form of ESP is electro static preceptor .An ESP can be defined as a device that utilized electric forces to separate suspended particle from flue gases.

ESP is highly efficient device for extraction of suspended particle and fly ash from the industrial flue gases.

ADVANTAGES OF ESP:-

High ash collection efficiency.

Low resistance path for gas flow.

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E.S.P

CHIMNEY

Chimney is used to leave the flue gases at proper height in the environment.Their height is so decided that flue gases cant affect area of about 50km(approx 220m).Content of flue gases are checked at different heights inside the chimney.Dust output 300mgSo2 output - 421mg Nox output - 354mgCo2 output - 5mg

TURBINETurbine converts heat energy of steam into mechanical energy.

Kinetic energy is changed to mechanical energy.

Rotational speed is 3000rpm,15000rpm.

27 TYPES OF TURBINE

HP turbine having 25 blades & single flow.

IP turbine having 17 blades & single flow.

LP turbine having 8 blades & double flow.

CONNECTION OF HP-IP-LP TURBINES

CONDENSER It reduce the turbine exhaust pressure so as to increase the specific output of the turbine. It recover high quality feed water in the firm of condensate and feed it back to the steam generator without any further treatment.29

GENERATORGenerator converts mechanical energy into electrical energy.

The generator is driven by directly coupled steam turbine at a speed of 3000 r.p.m.

Hydrogen is used for cooling medium primarily because of its superior cooling properties & low density

The purity of hydrogen should be 98% or above30

COOLING TOWER Cool the warm water discharged from the condenser and feed the cooled water back to the condenser. Reduced the cooling water demand In the plant.

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ADVANTAGE OF THE HYDROGEN COOLINGINCREASE EFFICIENCY (REDUCTION VENTILATION LOSSES)

INCREASE IN LIFE (WINDING INSULATION)

ELIMINATION OF FIRE HAZARD (HYDROGEN NOT SUPPORT BURNING)

SMALLER SIZE OF COOLER

SWITCH YARDTwo 220 KV bus bars have been provided in switch yard and are inter-connected through a bus coupler.. Each station transformer has two windings one secondary side and is rated for 50/25/25mva, 270/7/7.2 kva four feeder take off from 220 switch yard two to SAKATPURA GSS and other to HEERAPURA, Jaipur GSS. Each of four feeder are provided with bypass isolators which is connected across line breaker and breaker isolator.

Advantages

The fuel used is quite cheap.Less initial cost as compared to other generating plants.It can be installed at any place irrespective of the existence of coal. The coal can be transported to the site of the plant by rail or road.It require less space as compared to Hydro power plants.Cost of generation is less than that of diesel power plants.

Disadvantages

It pollutes the atmosphere due to production of large amount of smoke.It is costlier in running cost as compared to Hydro electric plants.

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