US 2011/0226194 A1 · Bottom Ash Dewatering System Using a Remote Submerged Scraper Conveyor

Abstract

Remote submerged scraper conveyor (SSC) consists of a conventional SSC modified to include a slurry processing system, which allows it to be located remotely from associated boilers at or slightly above grade level rather than directly under a boiler like a conventional SSC. The slurry processing system includes a pair of overflow troughs 34 and associated weirs located exterior to and along the top edge of each side of the horizontal section of the SSC and an underflow baffle, which extends from a position above the water line down into the horizontal section of the SSC below the water line. The slurry processing system allows the Remote SSC to receive a high volume wet ash slurry discharge via a slurry discharge pipe conventionally sent to an ash pond or a tall dewatering bin system.

Claims20

Dependent claims

A bottom ash dewatering system for a boiler, comprising:

a submerged scraper conveyor located remotely from the boiler at or above grade level, the submerged scraper conveyor comprising a horizontal section, a dewatering incline section, a conveyor running through the horizontal and dewatering incline sections;
and
a slurry processing system integrated with the horizontal section of the submerged scraper conveyor for receiving a bottom ash slurry discharge from a remotely located slurry outlet of the boiler, separating bottom ash and overflow water from the slurry discharge, delivering the separated ash onto the conveyor, and delivering the overflow water to an overflow water processing system.

A bottom ash dewatering system for a plurality of boilers, comprising:

a submerged scraper conveyor located remotely from the boilers at or above grade level, the submerged scraper conveyor comprising a horizontal section, a dewatering incline section, a conveyor running through the horizontal and dewatering incline sections;
and
a slurry processing system integrated with the horizontal section of the submerged scraper conveyor for receiving bottom ash slurry discharges from the plurality of boilers, separating bottom ash and overflow water from the slurry discharges, delivering the separated ash onto the conveyor, and delivering the overflow water to an overflow water processing system.

A bottom ash dewatering system for a boiler, comprising:

a submerged scraper conveyor located remotely from the boiler at or above grade level, the submerged scraper conveyor comprising a horizontal section, a dewatering incline section, a conveyor running through the horizontal and dewatering incline sections;
a slurry processing system integrated with the horizontal section of the submerged scraper conveyor for receiving a bottom ash slurry discharge from a remotely located slurry outlet of the boiler, separating bottom ash and overflow water from the slurry discharge, delivering the separated ash onto the conveyor, and delivering the overflow water to an overflow water processing system;
and
a dewatered ash distribution system for selectively conveying dewatered ash discharged from the submerged scraper conveyor to a plurality of dewatering bins for further dewatering.

1 more element

Dependencies are inferred from the claim text.

Bottom Ash Dewatering System Using a Remote Submerged Scraper Conveyor

Life of this patent

Bottom Ash Dewatering System Using a Remote Submerged Scraper Conveyor

Life of this patent

Abstract

Claims20