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Saturday, September 22, 2012

PowerPoint Presentation on Generation of Electricity from Coal

PPT On Generation of Electricity from Coal

Generation of Electricity from Coal Presentation Transcript:
1. In this Presentation
Basic of Power Generation
Basic information on Coal/Fuel Oil
Combustion Process
Power Plant Cycle
4 Main Path come across in any thermal power plant
Boilers and Turbines
Transmission of Power and Switching

A thermal power station is a power plant in which the Water is heated, turns into steam and spins a steam turbine and does some other work and produce electricity .
After it passes through the turbine, the steam is condensed in a condenser and recycled to where it was heated, this is known as a Rankine cycle

3. Why Coal?
Advantages of Coal Fuel
Abundantly available in India Low cost Technology for Power Generation well developed. Easy to handle, transport, store and use
Shortcomings of Coal
Low Calorific Value Large quantity to be Handled Produces pollutants, ash Disposal of ash is Problematic Reserves depleting fast
India’s Coal Reserves are estimated to be 206 billion tonnes. Present consumption is about 450 million tonnes.
Cost of coal for producing 1 unit of electricity (Cost of coal Rs 1000/MT) is Rs 0.75. Cost of Gas for producing 1 unit of electricity (Cost of Gas Rs 6/SMC) is Rs 1.20.

4. Combustion of coal
Carbon, hydrogen, sulfur are sources of heat on combustion
Surface moisture removed on heating during pulverization.
Inherent moisture and volatiles are released at higher temperature, making coal porous and leading to char/ coke formation. (Thermal preparation stage)

5. Boiler/ steam generator
Steam generating device for a specific purpose.
Capable to meet variation in load demand
Capable of generating steam in a range of operating pressure and temperature
For utility purpose, it should generate steam uninterruptedly at operating pressure and temperature for running steam turbines.

6. Boiler/ steam generator
A 500MW steam generator consumes about 8000 tonnes of coal every day
It will be considered good, if it requires about 200 cubic meter of DM water in a day
It will produce about 9500 tonnes of Carbon di Oxide every day

7. Type of Boilers used in Thermal Power Plant
Water Tube Boiler: Here the heat source is outside the tubes and the water to be heated is inside. Most high-pressure and large boilers are of this type. In the water-tube boiler, gases flow over water-filled tubes. These water-filled tubes are in turn connected to large containers called drums. 8. Steam Flows from Boiler to turbine

9. For more please refer our PPT. Thank You.

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