Mecgale specializes in complete line of Bottom Ash Handling Systems. Product range in bottom Ash Includes :-
  Water Impounded Hopper & Jet Pumping System
  Submerged Scrapper Conveyor System
  Dewatering Bin
  Bed Ash Handling System
Water Impounded Hopper & Jet Pumping System
 
 
Hot Bottom ash from boiler furnace are quenched after falling into water impounded hopper and collect at the bottom of the hopper. After a predetermined time Discharge gate fitted at the bottom of the hopper allows ash/ clinker to pass through specially designed clinker grinder and then pumped by Jet pump to transport the ash slurry to nearby slurry sump or Dewatering bin, depending on system in use.

The centrifugal Slurry Pump fitted at the ash sump conveys both Bottom Ash & Fly Ash to the ash pond situated at longer distance. This System utilizes lean slurry method (concentration about 25% - 30%). To control water wastage the free water from ash pond are pumped back to slurry sump. From there Slurry pump conveys both Bottom ash & Fly ash to its final destination.

In case of Dewatering bin, the overflow water from the dewatering bin goes to a settling tank and finally to a surge tank where relatively clean water is stored for reuse. At regular intervals , the dewatering bin is drained to remove maximum water from stored ash. The semi-dry ash is then discharged from Dewatering Bins to the truck or wagon for transporting the moist ash for final disposal area/reuse.

 
Bottom Ash Handling System Through Submerged Scrapper Conveyor

 
The Submerged Scrapper Conveyor  placed below bottom ash hopper quenches the hot bottom ash coming from boiler furnace. The water trough of the submerged conveyor provides required water sealing to the boiler. The scrapper bar fixed on the high quality scrapper chain continuously moves at slow speed and the slat portion of the conveyor drains the water from the ash. From the Scrapper conveyor the  moist ash  is feed into a belt conveyor for onward  disposal to a storage bin for final loading into trucks/wagons for final disposal or discharged into sluice trench for transferring to the slurry sump.
 
  The biggest advantage of Submerged Scrapper Conveyor is minimal water wastage and avoids water related pollution/problem.

Mecgale is having technological association with very reputed foreign manufacturer and can deliver very high quality Submerged Scrapper Conveyor even up-to 800 MW unit.
 
 
Dry Bed Ash Handling System Through Ashcon
 
Dry bed ash from the after cooler of CFBC,AFBC..etc boilers is collected in the water-cooled surge hopper. Ashcon placed underneath the surge hoppers, conveys the material. Ashcon is designed to convey abrasive and irregular sized material at temperature even up-to 450 C. For Clinker ash, Clinker grinder breaks larger lump into a small size and continues to deposit ash and broken clinker into the Ashcon for further conveying. Bed ash is transported in low velocity through enclosed pipeline to storage silo, this reduces pipeline erosion. This system does not require water thereby negates all water related difficulty and problems.

 
 
 
 
 
  Bottom Ash 
  Fly Ash
  Slurry Disposal system
  HCSD