The rotary ash cooler is invented by Chinese(Created in China). SONGLING has a number of patented technologies in Rotary ash cooler.
SONGLING's rotary ash cooler account for over 70% market share in China, ranged from 50MW to 600MW CFB unit.
Several types of ash coolers with transferred technology from Europe and US, such as screw coolers and the fluidized type of ash coolers, were installed in China initially. As the frequent failure of those initial designs of ash cooler in this service quickly became apparent, now those coolers are replaced by rotary ash coolers totally.
The screw coolers are typically designed to handle boiler ash with a discharge temperature of up to 950℃ and cooling it down to
200℃ or less so it can be transported pneumatically or mechanically to the ash silos.
The rotary drum cooler is invented by Chinese (created in China). SONGLING has a number of patented technologies in rotary drum cooler. SONGLING’s rotary drum cooler has been applied in cooling of calcined coke, semicoke, needle coke, magnesium reduction, manganese reduction, etc.
Sewage sludge is primarily derived from waste water which also consists of a variety of other substances. Prior to drying the sludge, free water is removed by mechanical means such as a belt press or firame preas to achieve around20-35% dry solids.