Process for the treatment of an aqueous medium polluted with hyd

Details Process for the treatment of an aqueous medium polluted with hyd Process for the treatment of an aqueous medium polluted with hyd

1997-01-21

1998-04-28

Hruskoci, Peter A.

Liquid purification or separation

Processes

Chemical treatment

210925, 252343, 252358, B01D 1705

Patent

active

057440468

ABSTRACT:
A process is described for the treatment of an aqueous medium which has been polluted with hydrocarbon compounds, termed crude oil, and a demulsifying and dispersing composition. The crude oil is brought into contact with a solution of a mixture of polyglycerol esters in a proportion of at least 50 ppm by weight in order to inhibit formation of a water-in crude oil emulsion or to partially break the emulsion if it has already formed. The polyglycerol esters can be combined with a surfactant, preferably an anionic surfactant, such as a sodium alkylsulphosuccinate.

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patent: 4895681 (1990-01-01), Herrmann et al.
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