Distillation: processes – separatory – With disparate physical separation
Patent
1976-05-18
1979-07-24
Bascomb, Jr., Wilbur L.
Distillation: processes, separatory
With disparate physical separation
203DIG16, 134 10, 202169, 210 21, 422260, 252135, B01D 1104, B01D 300
Patent
active
041621999
ABSTRACT:
A method and apparatus for removing organic contaminants from an aqueous metal-cleaning solution. The apparatus includes a first conduit, or pipe, for removing portions of the contaminated aqueous solution from its tank. The solution enters an extractor which permits intimate contact between the contaminated solution and an organic solvent. A second tube, or conduit, returns the aqueous solution, purified by this contact, to the original tank. A third conduit removes the organic solvent from the extractor after its contact with the aqueous solution, by which time it will contain organic components from the aqueous solution. This solvent, with the contaminants, enters a separator, such as a still, which removes the contaminants from it. The purified organic solvent then returns to the extractor along a fourth conduit. The cleansing operation proceeds intermittently or, preferably, continuously. Consequently, only a small amount of the aqueous solution need undergo purification at any particular time in order to maintain the organic contaminant level sufficiently low. The remainder of the aqueous solution stays in its original tank where it remains available for use notwithstanding the concurrent operation of the purification process.
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Bascomb, Jr. Wilbur L.
Friedman Eugene F.
Kuntz Earl J.
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