Liquid purification or separation – Structural installation – Closed circulating system
Patent
1988-06-27
1989-06-13
Fisher, Richard V.
Liquid purification or separation
Structural installation
Closed circulating system
210269, 210287, 210350, 210443, B01D 2926, B01D 2938
Patent
active
048390402
ABSTRACT:
Filter apparatus for purifying oil contaminated water, comprising a pressure resistant container (1) having a cylindrical outer shell (2) and pressure resistant end walls (3A, 3B). Disposed within the container (1) are first (5) and second (15) cylindrical inner shells, arranged concentrically and extending between the end walls (3A, 3B) and defining an intermediate, annular filter chamber (23) enclosing a particulate, elastic, oil absorbing, regeneratable filter material (24). The end portions (13A, 21A; 13B, 21B) of said first and second inner shells are fluid impervious whereas the intermediate portions thereof (14, 22) are designed as screen tubes. An axially movable, annular transverse wall (26A, 26B) is disposed in each fluid impervious portion (27A, 27B) of said filter chamber (23), said transverse walls being movable towards each other for compressing the filter material under the influence of a pressure medium supplied to the annular chambers (27A, 27B). The second inner shell (15) forms an axial tubular channel (16) which is connected to discharge outlets (17A, 17B) for purified water and also to a line for supplying a regeneration liquid. The outer shell (2) includes a connection for supplying contaminated water and a connection for discharging regeneration liquid.
REFERENCES:
patent: 927606 (1909-07-01), Sellenscheidt
patent: 2190305 (1940-02-01), Auberschek
patent: 2364240 (1944-12-01), Parry
patent: 2543165 (1951-02-01), Harlan
patent: 2593228 (1952-04-01), Wagner
patent: 3838977 (1974-10-01), Warren
patent: 4292174 (1981-09-01), Smith et al.
Environmental Pollution Control System EPCON AB
Fisher Richard V.
Millard Wanda L.
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