BOTTOM ASH AND BED ASH

Water Impounded Hopper and Water powered Jet Pumping System

Ash and clinkers produced inside boiler furnace are quenched and stored in water impounded hopper having refractory lining. Clinkers are crushed to small pieces by specially designed CRUSHERS and then pumped by Jet Pulsion Pumps through pipelines directly to ash disposal area or to ash slurry sump for onward disposal through ash slurry pumps. Where Bottom Ash is required in semi-dry condition for open Truck Transportation, De-watering Bins are used for storing the Ash and taking out the conveying water from the stored ash.

Bottom Ash Disposal System with Closed Loop Water Recirculation and Zero discharge Pollution free Arrangement

DCIPS offers system suitable for generating commercially acceptable dry ash with water recirculation features which enable re-use of the transport water in repeated cycle. In this system, the ash is transported by pipeline from water impounded hopper through Crusher and Jet Pump into a dewatering tank for storage. The overflow and the drain water from the dewatering tank is taken to a settling tank and thereafter to a surge tank where relatively clean water is stored for reuse. At predetermined intervals, the dewatering tank is drained to remove all the water from stored ash. Semi-dry ash is then discharged from Dewatering Bins to the truck or wagon for transportation to ash dump area or for any end use. This system can also be designed for zero discharge conditions thereby ensuring practically no outflow of the contaminated water from the system except for occasional blow-down.

Submerged Scraper Conveyor / Belt Conveyor Systems

These systems employ continuously operating scraper conveyor or submerged belt conveyor running below boiler furnace. The trough containing the conveyor is filled with water for quenching of bottom ash. Bottom ash is discharged into a sluice trench for transportation to slurry sump or to a conveyor for storage in silo for subsequent truck transportation.

Pneumatic Vacuum and Pressure Conveying Systems

Similar to Fly Ash conveying, DCIPS offers systems for Bottom Ash and Bed Ash handling from FBC or CFBC Boilors to be transported pneumatically to Silos. Plants supplied by DCIPS are working satisfactorily.

Bottom Ash Hopper Under Construction

Crusher

Bottom Ash Disposal System with De-Watering Bins and Closed Loop Water Recirculation System

Control Room for Bottom Ash Handling System