thermal power plant - GNDTP Bathinda

PPT on Guru Nanal Dev Thermal Plant

1. Institute of Engineering & Technology,Alwar Summer Training Presentation On ASH HANDLING PLANT At GURUNANAK DEV THERMAL POWER PLANT,BATHINDA Presented by :- SATYAM JAIN MECHANICAL(Morning )

2. Contents:- Introduction & History Plant’s Salient Features Layout of Thermal plant Main and Auxiliary Equipments Coal Handling Plant Pulverising Plant Boiler Turbine Ash Handling Plant Cooling Towers & Ponds Power Transmission System

3. Introduction & History:- A Thermal Power Plant converts the heat energy of coal into electrical energy. Coal is burnt in furnace and in a boiler which converts water into steam. The expansion of steam in turbine produces mechanical power which drives the alternator coupled to the turbine. In thermal generating stations coal, oil, natural gas etc. are employed as primary sources of energy .

4. The foundation stone of G.N.D.T.P. at Bathinda was laid on 19 th November 1969 , the auspicious occasion of 500 th birth anniversary of great Guru Nanak Dev Ji . Selection of the city because of : Its good railway connections for fast transportations of coal. 2) Availability of canal water.

5.   Plant’s Salient Features :-   PROJECT AREA:- Power plant  :- 238  acres Ash disposal  :- 845 acres Lake :- 180 acres Residential  colony :- 285 acres Marshalling yard  :- 256 acres Total area  :- 1804 acres   TOTAL COST :- Rs . 115 crores   STATION CAPACITY : - The total installed capacity of the power station 440MW with four units of  110MW each.

6. Layout of Thermal plant:-

7. Coal handling plant Pulverizing plant Draft fans Boiler Ash handling plant Turbine Condenser Cooling towers and ponds Feed water heater Economiser Superheater and Reheater Air preheater Main and Auxiliary Equipments :-

8. Coal Handling Plant:- Wagon Unloading Coal Carrying Conveyor The function of coal handling plant is automatic feeding of coal to the boiler furnace. A thermal power plant burns enormous amounts of coal. A 200MW plant may require around 2000 tons of coal daily

9. Pulverising Plant:- coal is pulverised i.e. ground to dust like size and carried to the furnace in a stream of hot air. Pulverising mills are further classified as : Ball mill Impact mill Contact mill

10. Boiler:- A boiler or steam generator is a closed vessel in which water under pressure, is converted into steam. Boilers are of two types- Fire tube boiler Water tube boiler

11. Turbine:- A steam turbine converts heat energy of steam into mechanical energy and drives the generator. It uses the principle that steam when issuing from a small opening attains a high velocity.

12. Ash Handling Plant:- Ash is the residue remaining after the coal is incinetered . In a thermal plant coal is generally used as fuel and ash is produced as a byproduct of combustion.

13. The percentage of ash in coal varies from 5% in good quality coal to about 40% in poor quality coal Power plants generally use poor quality of coal , thus amount of ash produced by it is pretty large. A modern 2000MW plant produces about 5000 tons of ash daily The stations use some conveyor arrangement to carry ash to dump sites directly or for carrying and loading it to trucks and wagons which transport it to the site of disposal

14. Fly ash can dispose off in two ways:- Dry ash System Wet ash System   Dry Ash System:- The main parts of dry ash handling system are:- Electrostatic Precipitator Vacuum Pumps Compressors Bag Filter Tower Transfer Hopper Surge Hopper Denseveyor Silos

15. Cooling Towers & Ponds:- Typically a 2000MW plant needs about 1500MGallon of water. Most plants use a closed cooling system where warm water coming from condenser is cooled and reused. Cooling tower is a steel or concrete hyperbolic structure having a reservoir at the base for storage of cooled water

16. Power Transmission System:-

17. THANK YOU!