A SEMINAR PRESENTATION ON SURATGARH SUPER THERMAL POWER STATION www.engineersportal.in

Suratgarh Super Thermal Power Station (RVUNL) Location :-  Suratgarh Super Thermal Power Station is located 27Km away from Suratgarh Town in Sri Ganganagar Distt. of Rajasthan. www.engineersportal.in

INTRODUCTION  Suratgarh thermal power station is the first super thermal plant of Rajasthan. It has installed capacity of 1500 MW, which is highest in the state.  The power plant has 6 units of 250MW each. www.engineersportal.in

BASIC SYSTEM OF THERMAL POWER PLANT www.engineersportal.in

COMPONENTS Boiler Turbine Deaerators Heat Exchangers Condensers Super Heaters Air Pre-heater Feed Water Heater Water Treatment Plant Coal Handling Plant Ash Handling Plant www.engineersportal.in

BOILER Also termed as ‘steam generator’ Water is evaporated in to steam by application of heat. Heat source is coal www.engineersportal.in

BOILER Then superheated steam is fed into super heaters to completely remove water particles. Finally fed to turbine. www.engineersportal.in

TURBINE Turbine, the rotary engine that converts the energy of a moving stream of fluid into mechanical energy. www.engineersportal.in

TURBINE The basic element in a turbine is a wheel or a rotor. There are three turbines HP, IP, LP operated at 3000 rpm with initial parameters 13 kg/cm2. This mechanical energy is transferred through a drive shaft to operate a generator to produce electricity. www.engineersportal.in

DEAERATORS Used for the removal of air & other dissolved gases from the feed water to steam generating boilers. www.engineersportal.in

HEAT EXCHANGERS Heat exchangers are equipment that transfers heat from one medium to another. Heat exchanger performance can deteriorate with time, off design operations and other interferences such as fouling, scaling etc. www.engineersportal.in

CONDENSER To convert exhaust steam to water for reuse thus saving on feed water requirement. www.engineersportal.in

SUPER HEATERS Super heaters are meant to raise the temperature of the steam. It eliminates the formulation of condensate during transporting of steam in pipe lines, which is harmful for turbine blades. www.engineersportal.in

AIR PRE-HEATER The air before being supplied to the boiler passes through pre-heater where the flue gases heat it. The pre-heating of primary air causes improved and intensified combustion of coal. www.engineersportal.in

FEED WATER HEATER The feed water heating equipment raises the temperature of the water by utilizing extraction steam from various stages of the turbine. www.engineersportal.in

WATER TREATMENT PLANT The principle problem in high-pressure boiler is to control corrosion and steam quality. Impurities in steam also form deposit over turbine blades and nozzles. The impurities present in water are as follows:- Un-dissolved and suspended impurities. Dissolved salts and minerals. www.engineersportal.in

COAL HANDLING PLANT The Heart of Super Thermal Power Plant because it provides the main fuel for combustion in boiler. There are 14 tracks in all for transportation of coal through rails. The coal is firstly unloaded from wagon by wagon Tripler then crushed by crushers and magnetic pulley and pulverized to be transformed to the boiler. The whole transportation of coal is through conveyor belt operated by 3- Induction Motor. www.engineersportal.in

Wagon Unloading System Crushing System Conveying System The coal handling plant can be broadly divided in three sections: Wagon Unloading System Crushing System Conveying System www.engineersportal.in

This plant can be divided into three sub-plants as follows :- ASH HANDLING PLANT This plant can be divided into three sub-plants as follows :- Fuel and Ash Plant Air and Gas Plant Ash Disposal and Dust Collection Plant www.engineersportal.in

Coal is used as combustion material in SSTPS. Fuel and Ash Plant: Coal is used as combustion material in SSTPS. Ash Handling Plant at SSTPS consists of specially designed bottom ash and fly ash in electro-static precipitator economizer and pre-heaters hopper. 2) Air and Gas Plant : Air from atmosphere is supplied to combustion chamber of boiler through the action of forced draft fan. The air before being supplied to the boiler passes through pre-heater where the flue gases heat it. www.engineersportal.in

3)Ash Disposal and Dust Collection Plant: SSTPS has dry bottom furnace. Ash Handling Plant consist of especially designed bottom and fly ash system for two-path boiler. The system for both units is identical. www.engineersportal.in

CONTROL & INSTRUMENTATION (C & I) DEPARTMENT This department is the Brain of the plant. Because from the relays to transmitters followed by the electronic computation chipsets and recorders and lastly the controlling circuitry, all fall under . 1. MANOMETRY LAB TRANSMITTER Used for pressure measurements of gases and liquids. Working Principle- The input pressure is converted into electrostatic capacitance. It can be mounted on a pipe or a wall. www.engineersportal.in

‘U’ shaped bent tube, filled with a liquid. For liquid or steam measurement transmitters is mounted below main process piping and for gas measurement transmitter is placed above pipe. b) MANOMETER ‘U’ shaped bent tube, filled with a liquid. Measures difference in pressure across the two limbs. c) BOURDEN PRESSURE GAUGE Oval section tube, its one end is fixed. It is provided with a pointer to indicate the pressure on a calibrated scale. It is of 2 types: Spiral type: for Low pressure measurement. Helical Type: for High pressure measurement www.engineersportal.in

b) ULTRA VIOLET CENSOR : 2. PYROMETER LAB a) GLASS THERMOMETER: Mercury in the glass thermometer boils at 340º C which limits the range of temperature that can be measured. b) ULTRA VIOLET CENSOR : This device is used in furnace and it measures the intensity of ultra violet rays there which directly indicates the temperature in the furnace. c) THERMOCOUPLES: Based on SEEBACK and PELTIER effect. It comprises of two junctions at different temperature. This is an important part in the plant. www.engineersportal.in

3.FURNACE SAFETY AND SUPERVISORY SYSTEM LAB This lab has the responsibility of starting fire in the furnace to enable the burning of coal. The furnace has six feeder mills each separated by warm air pipes fed from forced draft fans. www.engineersportal.in

CONCLUSION The first phase of practical training has proved to be fruitful. It provides an opportunity to encounter with such huge machines like Wagon Tripler, 250MW Turbines and Generators. It also provides an opportunity to learn how the technology is used at proper place. www.engineersportal.in

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