Hydraulic annular washing column, and process for separating...

Details Hydraulic annular washing column, and process for separating... Hydraulic annular washing column, and process for separating...

2005-05-10

2005-05-10

Popovics, Robert James (Department: 1724)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S767000, C210S769000, C210S772000, C210S774000, C210S801000, C210S803000, C210S175000, C210S256000, C210S408000, C210S413000, C210S433100, C210S513000, C210S532100

Reexamination Certificate

active

06890441

ABSTRACT:
An apparatus for separating solids from a suspension includes a hollow cylindrical column having a central axis therethrough. The column has an interior with a cross-section, perpendicular to said axis, that is constant along said axis, and that extends from a first end to a second end of the column; one central tube axially disposed in said column and extending from said one end toward said opposite end, said central tube having an outer wall of constant diameter, said cylindrical column and said central tube defining an annular zone between them, extending axially from said first end of the column to at least near said second end of the column; at least one filter in said outer wall of the said central tube, forming the only direct communication between the said annular zone and the interior of the tube and at least one filter in the outer wall.

REFERENCES:
patent: 2862797 (1958-12-01), McKay
patent: 3298950 (1967-01-01), Mindler
patent: 3319437 (1967-05-01), Goins
patent: 3807202 (1974-04-01), Gunkel
patent: 4038178 (1977-07-01), Hukki
patent: 4734102 (1988-03-01), Thijssen
patent: 5622321 (1997-04-01), Brundiek et al.
patent: 6079567 (2000-06-01), Gray
PCT/NL02/00598 International Search Report w/Examined claims attached.

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