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CHHABRA THERMAL POWER STATION Presentation Transcript
1.CHHABRA THERMAL POWER STATION
2.INTRODUCTION
In India 75% of total power is generated by the Thermal Power Stations . Because of availability of coal.
Chhabra Thermal Power Project is a project of Rajasthan Rajya Vidyut Utpadan Nigam(RRVUNL). It is situated at village Motipura Chowaki In Baran.
Its total capacity is 500 MW as at present with two units working with capacity.
Having two unit of 2 x 250 MW = 500 MW, two units of 2 x 250 MW are under construction ,two supercritical units of 2 x 660 MW and two gas based units of capacity 2 x 110 MW are purposed for future.
In India 75% of total power is generated by the Thermal Power Stations . Because of availability of coal.
Chhabra Thermal Power Project is a project of Rajasthan Rajya Vidyut Utpadan Nigam(RRVUNL). It is situated at village Motipura Chowaki In Baran.
Its total capacity is 500 MW as at present with two units working with capacity.
Having two unit of 2 x 250 MW = 500 MW, two units of 2 x 250 MW are under construction ,two supercritical units of 2 x 660 MW and two gas based units of capacity 2 x 110 MW are purposed for future.
3.Basic Phenomenon of Electricity Generation
4.The Skelton of CTPS
5.Operational features of Power Plant
BOILER
TURBINES (HP,IPLP)
GENERATOR
CONDENSER
ELECTROSTATIC PRECIPITATOR
DEAERETOR
COAL MILLS
AIR-PREHEATORS
COOLING TOWERS
ID (Induced Draft) ,FD (Forced draft),PA (Primary Air) Fans
BOILER
TURBINES (HP,IPLP)
GENERATOR
CONDENSER
ELECTROSTATIC PRECIPITATOR
DEAERETOR
COAL MILLS
AIR-PREHEATORS
COOLING TOWERS
ID (Induced Draft) ,FD (Forced draft),PA (Primary Air) Fans
6.Boiler is an enclosed vessel in which water heated and circulated until the water is turned in to steam at the required pressure.
7.TURBINES
The steam turbine itself is a device to convert the heat in steam to
mechanical power.
There are three turbines installed classified as HP(High Pressure Turbine) , IP( Intermediate pressure Turbine) and LP(Low Pressure Turbine) which are aligned in cascade form with each other as shown in below .
Supersaturated Steam first enters in HPT and after work done in HPT its temperature and pressure decreased , so it again sent to re-heater (a part of boiler).
In re-heater the steam again get super saturation (537 0C , 150 Kg/cm2 ) approx, then it pass through the IPT and in continuous manner pass through the LPT and give the rotor a mechanical thrust.
The steam turbine itself is a device to convert the heat in steam to
mechanical power.
There are three turbines installed classified as HP(High Pressure Turbine) , IP( Intermediate pressure Turbine) and LP(Low Pressure Turbine) which are aligned in cascade form with each other as shown in below .
Supersaturated Steam first enters in HPT and after work done in HPT its temperature and pressure decreased , so it again sent to re-heater (a part of boiler).
In re-heater the steam again get super saturation (537 0C , 150 Kg/cm2 ) approx, then it pass through the IPT and in continuous manner pass through the LPT and give the rotor a mechanical thrust.
8.GENERATOR
An electrical generator is a machine, which converts mechanical energy (or power) into electrical energy (or power). Energy conversion is based on the principal of the production of dynamically (or motionally) induced emf Whenever conductor cuts magnetic flux, dynamically
induced emf is produced in it according to Faraday’s Laws of electromagnetic induction. This emf causes a current to flow if the conductor circuit is closed.
An electrical generator is a machine, which converts mechanical energy (or power) into electrical energy (or power). Energy conversion is based on the principal of the production of dynamically (or motionally) induced emf Whenever conductor cuts magnetic flux, dynamically
induced emf is produced in it according to Faraday’s Laws of electromagnetic induction. This emf causes a current to flow if the conductor circuit is closed.
9.CONDENSER
In CTPS surface cooling type condersers are installed.
The surface condenser is a shell and tube heat exchanger in which cooling water is circulated through the tubes.
The exhaust steam from the low pressure turbine enters the shell where it is cooled and converted to condensate (water) by flowing over the tubes as shown in the adjacent diagram.
Such condensers use steam ejectors or rotary motor-driven exhausters for continuous removal of air and gases from the steam side to maintain vacuum.
In CTPS surface cooling type condersers are installed.
The surface condenser is a shell and tube heat exchanger in which cooling water is circulated through the tubes.
The exhaust steam from the low pressure turbine enters the shell where it is cooled and converted to condensate (water) by flowing over the tubes as shown in the adjacent diagram.
Such condensers use steam ejectors or rotary motor-driven exhausters for continuous removal of air and gases from the steam side to maintain vacuum.
10.ELECTROSTATIC PRECIPITATOR
In electrostatic precipitator ash is subjected to pass through a passage in which high electrostatic charge of the order of 60 to 70 Kilo Volts exists.
This highly electrostatically charged atmosphere ionises the ash particles and such electrically charged ash particles are attracted towards the positive electrodes of the system where they loose the electrical charge and fall down into the collecting hoppers placed below the collecting electrodes.
This system is known as Electrostatic precipitator (ESP). Now a days ESP is commonly used in thermal power plant for fly ash separation.
In electrostatic precipitator ash is subjected to pass through a passage in which high electrostatic charge of the order of 60 to 70 Kilo Volts exists.
This highly electrostatically charged atmosphere ionises the ash particles and such electrically charged ash particles are attracted towards the positive electrodes of the system where they loose the electrical charge and fall down into the collecting hoppers placed below the collecting electrodes.
This system is known as Electrostatic precipitator (ESP). Now a days ESP is commonly used in thermal power plant for fly ash separation.
11.DEAEARATOR
The presence of certain non condensable gases, principally oxygen, carbon dioxide and ammonia, dissolved in water is generally considered harmful because of their corrosive attack on attack on metals particularly at elevated temperatures.
The deaerator used to remove the these non-consensable gases specially Oxygen from feed water.
The presence of certain non condensable gases, principally oxygen, carbon dioxide and ammonia, dissolved in water is generally considered harmful because of their corrosive attack on attack on metals particularly at elevated temperatures.
The deaerator used to remove the these non-consensable gases specially Oxygen from feed water.
12.COAL MILLS
In coal mills the coal which is larger in size is crushed and Pulverized.
After puverization the coal lifted by primary air and sent to furnace through classifiers four in each feeder.
In coal mills the coal which is larger in size is crushed and Pulverized.
After puverization the coal lifted by primary air and sent to furnace through classifiers four in each feeder.
13.AIR PREHEATOR
An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process.
The purpose of the air pre heater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas.
An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process.
The purpose of the air pre heater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas.
14.COOLING TOWERS
Cooling towers are evaporative coolers used for cooling water or other working medium to near the ambient wet-bulb air temperature.
Hot water comes from the condenser and evoparated by cooling tower by making contact it with atomospheric air and make it cool approx 10 0C.
Cooling towers are evaporative coolers used for cooling water or other working medium to near the ambient wet-bulb air temperature.
Hot water comes from the condenser and evoparated by cooling tower by making contact it with atomospheric air and make it cool approx 10 0C.
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