B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/145
B01D 21/24 (2006.01) B01D 17/00 (2006.01) B01D 43/00 (2006.01)
Patent
CA 1091591
ABSTRACT OF THE DISCLOSURE The specification describes a method and an apparatus adapted to carry out the method for separating foreign solid particles from a contaminated liquid, the method generally comprising the steps of pumping into an enclosed tank having a cover a vehicle liquid of a specific gravity greater than that of the contaminated liquid having the particles, pumping into the tank and on top of the vehicle liquid the contaminated liquid and thereby floating the contaminated liquid on the vehicle liquid to present a layer of the contaminated liquid and allow the foreign solid particles to sink into the vehicle liquid, filling the tank up to the cover with both the liquids to create a pressure in the liquids in the tank, removing the originally contaminated liquid from the tank and controlling the rate of removal by use of a valve while continuously pumping additional contaminated liquid with solid particles into the tank and thereby control the height of the layer of the contaminated liquid in the tank, all of the contaminated liquid is introduced and removed relative to the tank at spaced-apart locations adjacent respective opposite sides of the tank and the layer and adjacent the upper surface of the layer, for flow of the contaminated liquid across the tank and optimum sinking of the particles from the contaminated liquid while in the tank, pumping the vehicle liquid into the tank and removing the vehicle liquid from the tank at spaced-apart locations adjacent respective opposite sides of the tank and oppo- site from the locations of the introduction and removal of the contaminated liquid relative to the tank, to establish a cross- flow between the two liquids, and consequently flushing the vehicle liquid and the solid particles from the tank while continuously pumping the vehicle liquid into the tank.
258606
Enzmann Siegmund J.
Macrae & Co.
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