Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-02-14
1979-03-27
Sever, Frank
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210108, 210333R, 210373, 210393, B01D 2324
Patent
active
041464761
ABSTRACT:
In a peeling centrifuge comprising a rotatable centrifuging drum which is surrounded by a stationary filtrate collection chamber having an outlet, and wherein the drum perforations communicate directly with that chamber, regeneration of the filter bed is effected while the drum rotates by throttling said outlet and introducing liquid to the chamber, so that liquid accumulates in the chamber and penetrates, at any instant, at least a portion of the filter bed. In one embodiment, wherein the drum axis is horizontal, only a sector of the bed in the lower region of the drum is penetrated at any time, and regeneration of the entire bed is accomplished sequentially as the drum rotates. In other embodiments, the chamber is allowed to fill with regenerating liquid to such extent that the entire bed is penetrated simultaneously. The regeneration technique may be carried out either in the terminal phase of a centrifuging operation, or after completion of centrifuging and peeling of the accumulated solids cake.
REFERENCES:
patent: 1761593 (1930-06-01), Sharples
patent: 2172320 (1939-09-01), Jones
patent: 2658620 (1953-11-01), Davis et al.
Escher Wyss Limited
Ostmann Robert A.
Sever Frank
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