Process for the treatment of contaminated emulsion

Details Process for the treatment of contaminated emulsion Process for the treatment of contaminated emulsion

1988-04-13

1990-09-25

Lee, Mary C.

Compositions

Preservative agents

Anti-corrosion

252344, 252 495, 210708, 426602, 426605, 426607, B01D 1704

Patent

active

049591606

ABSTRACT:
A process for the resolution of an emulsion which comprises an internal water phase, an external fat and/or oil containing phase and a finely divided metal contaminant which comprises mixing a contaminated emulsion with a volume of water sufficient to increase the total water content to at least 50% on a mass to mass basis, if the water content of the emulsion relative to that of the rest of the emulsion is less than 50% on a mass to mass basis; adding to the emulsion at least one of a suitable emulsifier and demulsifier; mixing the emulsion with a short-chain organic acid to lower the pH from to 3-5 and; allowing the emulsion to settle out into an upper layer comprising the external phase; a lower water layer and a bottom precipitate comprising the contaminant.

REFERENCES:
patent: 1431937 (1922-10-01), Dunham
patent: 2357933 (1944-09-01), DeGroote et al.
patent: 2400394 (1946-05-01), DeGroote et al.
patent: 2516913 (1950-08-01), Revukas
patent: 2679522 (1954-05-01), DeGroote
patent: 4123357 (1978-10-01), Clements
patent: 4163727 (1979-08-01), Inks
patent: 4342657 (1982-08-01), Blair, Jr.
patent: 4515684 (1985-05-01), Brown
patent: 4738795 (1988-04-01), Farnand
Bennett, Practical Emulsions, Chemical Publishing Company, Inc., Brooklyn, N.Y., 1943, pp. 77-79.

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