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Both HP and LP water pumps are utilized in a bottom-ash handling system. Bottom-ash high-pressure water supply pumps are used to extract bottom ash from the furnace/economizer. When the bottom-ash handling system deploys jet pumps, HP pumps operate sequentially and in on-off mode, supplying to the jet pumps, hopper flushing, seal trough and gate housing flushing, etc.
Dry Bottom Ash Handling Dry Bottom Ash Handling Global environmental pressures demand increasing efforts from power generators to reduce CO 2, water consumption and associated pollutants at a micro level. Since 1974 Clyde Bergemann has been
1/3/2007 By far the majority of the world’s coal-fired power plants use wet extraction systems for handling bottom ash, either of the submerged scraper conveyor (SSC) or water impounded hopper type. But there is increasing interest in dry systems, both for new build and retrofit applications.
For some years the dry bottom ash handling business has been dominated by Magaldi of Italy, which, apart from a couple of Chinese suppliers, has essentially had the field to itself. However, Clyde Bergemann has now emerged as an important new player,
The bottom ash handling system utilizes a Submerged Scraper Chain Conveyor (SSCC) beneath the furnace and submerged in the water seal. The conveyor continually discharges the bottom ash to a storage area adjacent to the boiler, from where it is loaded into ash transport trucks by front end loaders and transported to the ash storage area.
Dry Bottom Ash Handling Options & New Technology World of Coal Ash Conference 2009 2009 World of Coal Ash (WOCA) Conference May 4-7, 2009 in Lexington, KY, USAElimination of Fly Ash from Ash Ponds Options & Advantages • Vacuum System to Silo
Wet ash system is can be utilized for Bottom Ash handling with water impounded hopper and jet pumps for intermittent removal.Ash collected in economiser, primary air heater and secondary air heater hoppers drops continuously through suitable vertical pipe
Coarse ash material such as bottom ash is most often crushed in clinker grinders (crushers) prior to being transported in the ash conveyor system. Very finely sized fly ash often accounts for the major portion of the material conveyed in an ash handling system.
Bottom Ash During the incineration process, the non-combustible residue of combustion in the incineration system, i.e. bottom ash, will be collected and magnetic separators will extract ferrous metals from the bottom ash for recovery.