Coal Burning Power Plants

The production of electricity through the combustion of coal is one of the oldest and cheapest methods to produce electricity. Coal supplies are plentiful and will be available to produce electricity for hundreds of years. While conventional supplies of oil and natural gas are expected to run out in the near future. This has cause a growth in nuclear power. Through out this report one will also learn the disadvantages and advantages to coal burning power plant and how they operate. Coal has played a major role in electricity production ever since the first power plants were built in the world in the 1880's. The earliest power plant used hand feed wood or coal to heat boiler and produce steam. This steam was used in reciprocation steam engines which turned generators to produce electricity. In the 1920's Pulverized-coal firing was developed which brought advantages that included higher combustion temperatures, improved thermal efficiency, and a lower requirement for excess air for combustion. In the 1940's the cyclone furnace was developed which allowed the combustion of poorer grade coal with less ash production and greater overall efficiency. Improvements in efficiency have continued to occur throughout the years. But overall, electricity production from coal is based on the same methods started over 100 years ago, but the improvements in all areas have brought coal power to be the inexpensive power source used so widely today( Electricity from coal).

Coal Burning Power Plants 3 There are three predominate methods of burning coal to make steam, power turbine, and generate electricity. Most coal power plants either burn pulverized coal blown into a boiler or use cyclone furnaces to burn coal in a vortex of air. The current trend for new coal power plant is to use fluidized bed combustion which has a number of advantages over the other methods (Electricity from coal). In the Pulverized coal system the coal burning has been pulverized into a fine