Patent · US Active

System and method for dewatering coal combustion residuals

US10144892B2 · kind B2 · utility

1Cited by

12References

16Claims

0Family size

Assignee

AECOM Technical Services, Inc. · US

Inventors

Steven Kosler · Austin, US
David Seeger · Austin, US
George Richard Bird · Wildwood, US

Key dates

Filing date	Jul 18, 2017
Grant date	Dec 4, 2018
Priority date	—
Expiry date	Jul 18, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10L2290/08
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The installation of prefabricated drains in a horizontal, generally co-planar pattern below the surface of the CCR with suction or a vacuum to withdraw water from the CCR material to lower the water level down to the level of the prefabricated drains below the CCR surface. Dewatering may be coupled with imparting vibrations to the material to further promote both additional dewatering and compaction of the CCR material in the pond. A suitably graded bottom ash, fly ash, sand or large-diameter-solid particle layer may be added on top of the horizontal drains to enhance dewatering of finer CCR material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.