Remote Submerged Scraper Conveyor from Clyde Bergemann Senior

Clyde Bergemann Delta Ducon (CBDD) introduces its newest technology, ASHCON™, a Remote Submerged Scraper Conveyor (RSSC). This technology offers a unique option for plants to eliminate their ash ponds. By intercepting the pipelines leading to the ash ponds, the slurry flow is diverted to an ASHCON™ RSSC.

This patent pending invention was motivated by the movement in the USA towards eliminating all ash ponds while facing the reality that many existing plants do not have the access and headroom needed to retrofit Submerged Scraper Conveyors, SSCs, or DRYCON™ units directly under the older boilers. Previously, the only viable solution was to retrofit tall dewatering bins, settling tanks and surge tanks in a field beyond the boiler island. Invariably, this meant changing the existing jet pumps and water supply pumps for much higher water pressure and motor horsepower to deal with the higher total dynamic head, TDH.

The low-lying RSSC concept eliminates the need for retrofitting jet pumps and water supply pumps to lift the ash slurry high into the air to reach traditional dewatering bins. This saves energy costs as well as outage related installation costs.

An ASHCON™ RSSC can be installed while the boiler is on-line and the tie-in connection requires very little outage time.

In smaller plants, one ASHCON™ can service several boiler units, providing an economical means to eliminate ash ponds in a shorter period of time.

While the use of an SSC or DRYCON™ conveyor is preferred from an energy cost standpoint, the ASHCON™ conveyors only deal with crushed material dropping a few feet from the incoming pipelines. This less severe service leads to greater reliability and longer conveyor life.