Apparatus for removing liquid from the thickeners, filters, and

Details Apparatus for removing liquid from the thickeners, filters, and Apparatus for removing liquid from the thickeners, filters, and

1992-10-16

1993-07-13

Therkorn, Ernest G.

Liquid purification or separation

With gas separator

210258, 210406, 2104161, 55203, B01D 1900, B01D 3501

Patent

active

052270580

ABSTRACT:
A method of removing liquid from a thickener, a filter, a washer or the like water-separating device obviates the need for the conventional use of a long drop leg and large filtrate tank. On an upstream face of a liquid-pervious member, a layer of liquid-containing substance is formed. At a downstream face of the liquid-pervious member, a negative pressure (e.g. partial vacuum) is generated to induce the flow of a liquid or a liquid-and-gas filtrate from the liquid-containing layer through the liquid-pervious member. The filtrate is conducted from the vicinity of the downstream face of the liquid-pervious to an inlet of a filtrate pump; such conducting of filtrate is carried out through an enclosed flow passage whereby the filtrate pump generates at least a portion of the negative pressure at the downstream face of the liquid-pervious member. An apparatus for likewise removing filtrate from a thickener, a filter, a washer or the like industrial filtering device is also disclosed.

REFERENCES:
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J. Perry, ed., Chemical Engineers' Handbook, 3rd ed. (New York: McGraw-Hill Book Co., Inc., 1950), pp. 990-991.
V. Mueller, Grundoperationen Chemischer Verfahrenstechnik, 5th ed. (Leipzig, Germany: Veb Deutscher Verlag fuer Grundstoffindustrie, 1978), p. 180.

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