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US 4,749,479 AGranted
Apparatus for separation of liquids and solids using fabrics
AssigneePhillips Petroleum Company
InventorLew T. Gray
Life of this patent
Estimating the term…
Abstract
Liquids can be separated from the solids contained in slurries, sludges, etc. by forcing a liquid-permeable fabric, downward into the slurry so that solid materials are retained below the liquid-permeable fabric and liquids can be pumped or drained from above the liquid-permeable fabric. Apparatus is provided, comprising liquid-permeable fabrics and weighting means.
Claims28
Apparatus for separating liquid from solids suspended in a slurry of said solids and said liquid, comprising:
- slurry-containing means for containing a quantity of said slurry while said liquid and said solids are separated;
- filtering means disposed at least partially within said slurry-containing means for passing said liquid therethrough, said filtering means having a top surface and a bottom surface and comprising at least one layer of a liquid-permeable fabric consisting essentially of fibers compatible with said liquid to be separated from said quantity of said slurry;
- weighting means operatively engaging said filtering means for creating sufficient negative buoyancy to cause said filtering means to descend into said quantity of said slurry whereby liquid from said quantity of said slurry is passed from said quantity of said slurry through said at least one layer of liquid-permeable fabric and is thereby separated from said quantity of said slurry;
- wherein said weighting means comprises at least one layer of aggregate disposed over at least one of said at least one layer of a liquid-permeable fabric for providing a drainage channel for liquid which has passed through said at least one liquid-permeable fabric and has been thereby separated from said quantity of said slurry;
- and
- liquid removal means communicating with said layer of aggregate for removing said liquid which has passed through said filtering means.
3 more elements
Apparatus for separating liquid from solids suspended in a slurry of said solids and said liquid, comprising:
- slurry-containing means for containing a quantity of said slurry while said liquid is separated from said solids;
- laminated filtering means disposed at least partially within said slurry-containing means, said filtering means having a top surface and a bottom surface and comprising at least one layer of aggregate material, each said layer of aggregate material being contained between two layers of liquid-permeable fabric each having outer edges;
- weighting means operatively engaging said laminated filtering means for creating with said aggregate material sufficient negative buoyancy to cause said filtering means to sink into said quantity of said slurry to the extent that liquid from said quantity of said slurry is passed from said slurry through at least one of said layers of liquid-permeable fabric while solids from said quantity of said slurry are prevented from passing from said slurry through the bottom surface of said filtering means thereby separating said liquid from said solids suspended in said quantity of said slurry;
- and
- means in fluid flow communication with said laminated filtering means for removing said liquid which has passed through said filtering means.
2 more elements
Dependencies are inferred from the claim text.