Method and device for demulsifying an oil-containing aqueous emulsion

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United States of America Patent

PATENT NO 6413430
SERIAL NO

09555437

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Abstract

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A process for separation of an oil-containing aqueous emulsion includes mixing the oil-containing aqueous emulsion with carbon-dioxide and subjecting the emulsion and carbon dioxide for a specified time within an autoclave to an elevated pressure and an elevated temperature. A rising stream of bubbles is formed within the autoclave by suddenly relieving the pressure within the autoclave with the rising stream of bubbles serving to separate the oil-containing aqueous emulsion into an oil-rich phase and an oil-depleted emulsion. The oil depleted emulsion is transferred to a segrating tank. At least a fraction of the oil-depleted emulsion within the segregated tank is subjected to ultrafiltration to separate the fraction into a permeate and a retentate.

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Patent Owner(s)

  • MESSER GRIESHEIM GMBH;GRIESHEIM, MESSER

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berger, Thomas Essen, DE 57 406

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