Electrically augmented vacuum filtration

Details Electrically augmented vacuum filtration Electrically augmented vacuum filtration

1979-05-18

1980-06-10

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204299R, 204300R, 210406, B01D 1302

Patent

active

042071585

ABSTRACT:
A process for dewatering a suspension of solids in an electric field controllably maintained between opposing electrode structures, causing the solids to migrate relative to the carrier liquid to form a layer or cake on one set of electrode structures while withdrawing carrier liquid under vacuum in the opposite direction through the liqid pervious wall of hollow, counterelectrode structures. A selected electrolyte is pumped through the hollow electrode structure on which the cake is formed to continuously bathe the electrode element therein in said electrolyte. Vacuum is applied to the electrolyte in said electrode structure to remove gases evolved at the electrode element. The cake material is detached from the electrode structure and recovered.

REFERENCES:
patent: 1435886 (1922-11-01), Acton et al.
patent: 2900320 (1959-08-01), Metcalfe et al.
patent: 2944952 (1960-07-01), McMinn et al.
patent: 3642605 (1972-02-01), Chenel et al.
patent: 3679565 (1972-07-01), Gilchrist
patent: 3972799 (1976-08-01), Taylor et al.
patent: 3980547 (1976-09-01), Kunkle
patent: 4048038 (1977-09-01), Kunkle

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