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Rotary Ash Cooler for CFB Boilers
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Rotary Ash Cooler for CFB Boilers
  • Rotary Ash Cooler for CFB Boilers

  • Category: Material Cooling Equipment

  • Summary:
    The Rotary ash cooler is invented by Chinese (created in China). SONGLING has a number of patented technologies in design of rotary ash cooler. SONGLING's rotary ash cooler accounts for over 70% market share in China, ranged from 50MW to 600MW CFB unit in coal fired power plants. Several types of ash cooler with transferred technology from Europe and US, such as screw cooler and the fluidized type of ash cooler, were installed in China initially. As the frequent failures of those initial designs of ash cooler became apparent, now almost all those coolers have been replaced by rotary ash coolers.
  • Product Inquiry
Product description
The Rotary ash cooler is invented by Chinese (created in China). SONGLING has a number of patented technologies in design of rotary ash cooler.
SONGLING's rotary ash cooler accounts for over 70% market share in China, ranged from 50MW to 600MW CFB unit in coal fired power plants.
Several types of ash cooler with transferred technology from Europe and US, such as screw cooler and the fluidized type of ash cooler, were installed in China initially. As the frequent failures of those initial designs of ash cooler became apparent, now almost all those coolers have been replaced by rotary ash coolers.
 
 
Reference
Over 2000 coolers sold since 2002
1560 coolers in operation all over the world
Units in service over 20 years
Cooling capacity up to 40tph
 
Features
Excellent capacity control
Insensitive to Ash size and characteristics
Highly reliable and efficient cooling
Patented and reliable seal design
Patented roller support design
Patented water inlet station
Easy on-line check and maintenance
Very low auxiliary power consumption
 
Working Principle 
Solids enter the rotating barrel from one side and are cooled by spiral and longitudinal fins inside the barrel. The spiral fins lit and convey the solids continuously to the barrel exit. There is no mechanical pushing force on the solids therefore there is little erosion on the fins and barrel. The solid flow increases with the barrel rotating speed and decreases to zero when the barrel stops rotating. Ash cooling capacity is automatically adjusted by barrel rotating speed. The rotating speed is controlled by a variable frequency motor which is DCS-controlled depending on bed pressure.
 

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