NTPC DADRI

ABOUT NTPC

• NTPC, the largest power Company in India, was setup in 1975 to accelerate power development in the country.

• NTPC has installed capacity of 29,394 MW.• It has 15 coal based power stations (23,395 MW)• 7 gas based power stations (3,955 MW)• 4 power stations in Joint Ventures (1,794 MW). • The company has power generating facilities in all

major regions of the country. • It plans to be a 75,000 MW company by 2017

POWER PLANT

1. Cooling tower 10. Steam Control valve 19. Superheater

2. Cooling water pump 11. High pressure steam turbine 20. Forced draught (draft) fan

3. transmission line (3-phase) 12. Deaerator 21. Reheater

4. Step-up transformer (3-phase) 13. Feedwater heater 22. Combustion air intake

5. Electrical generator (3-phase) 14. Coal conveyor 23. Economiser

6. Low pressure steam turbine 15. Coal hopper 24. Air preheater

7. Condensate pump 16. Coal pulverizer 25. Precipitator

8. Surface condenser 17. Boiler steam drum 26. Induced draught (draft) fan

9. Intermediate pressure steam turbine 18. Bottom ash hopper 27. Flue gas stack

DIFFERENT DEPARTMENTS

• Coal handling plant• Boiler maintenance department• Turbine maintenance department• Electrical maintenance department• Ash handling plant

COAL HANDLING PLANT

COAL Wagon Tripler BOBR

Conveyor

Coal yard Coal bunker

BOILER DEPARTMENT

The boiler used here is “2 PASS, HANGING TYPE, TANGENTIAL FIRED

BOILER”

TURBINE DEPARTMENT

ASH HANDLING PLANT

Ash from boiler

ESP

Chimney

ELECTROSTATIC PRECIPITATOR

ELECTRICAL DEPARTMENT

• An alternator is coupled to a steam turbine and converts mechanical energy of the turbine into electrical energy.

• Electricity is distributed from switch yard

COOLING TOWER

•Remove heat from the water discharged from the condenser so that the water can be discharged to the river or re circulated and reused.•It has hyperbolic shape.

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