Pulverisation of coal in Thermal Power Plant

Replies

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  TinaT

  There is a trade off in the auxiliary power required to pulverize the coal.
  
  Coal which is crushed finer will, in most cases, burn better (depending on the boiler design) - but if you put 10 MW of power into crushing the coal to get 8 MW of additional power from the generator... your net gain was -2MW (i.e. it was a LOSS).
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  akpower

  Thanks Tina .It is an accepted fact that auxiliary consumption in a power plant is 10% or less having turbo feed pumps.In no case the power required for pulverization will be more than output of generator. Loss due to unburnt will be much more than additional power for pulverization. However I have not seen designers going in for fine coal pulverization. Only designers can explain .
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  Ramani Aswath

  akpower

  Thanks Tina .It is an accepted fact that auxiliary consumption in a power plant is 10% or less having turbo feed pumps.In no case the power required for pulverization will be more than output of generator. Loss due to unburnt will be much more than additional power for pulverization. However I have not seen designers going in for fine coal pulverization. Only designers can explain .

  Please have a look at this PPT from IIT Delhi: (You have to paste the id)
  
  web.iitd.ac.in/~pmvs/jgl710/jgl710-23.ppt
  
  This is another:
  #-Link-Snipped-#
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  Devil26

  perhaps handling finer coal becomes difficult!!!