Ash Handling System
it is a very important part of Thermal Power plant. It's main function is to transport the Ash generated from coal burning to the proper storage point.
There are two types of transportation of Ash from collection point to Storage point-
1) Wet Ash conveying -
Bottom Ash Hopper and economizer Ash is transported through wet system. (Water + Ash Mixture)
2) Dry Ash Conveying
Air pre heater, Duct hopper, ESP and Chimney Ash is transported through dry Ash system.
THERE are three types of systems for dry Ash conveying-
1) Pressurised System- Transport Ash directly by using compressed air
2) Vacuum System- Collection at storage place through vacuum.
2) Vacuum cum pressure Conveying System-
In this system first the Ash is collected from Ash collection point to buffer hopper by vacuum and after that pressure Conveying is used to transfer the Ash from buffer hopper to Ash storage silo.
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