Recovery of oil and sulfonate from filter cake

Details Recovery of oil and sulfonate from filter cake Recovery of oil and sulfonate from filter cake

1983-06-20

1985-02-26

Sadowski, David

Liquid purification or separation

Processes

Separating

210772, B01D 1200

Patent

active

045016704

ABSTRACT:
A process for treating filter cakes, obtained by filtering oils containing oil soluble alkaline earth metal sulfonates employing siliceous filter aids in the filtration, to release oil and sulfonate from the filter cakes is disclosed. The filter cakes are mixed with hot aqueous solutions of materials selected from the group consisting of alkali metal hydroxides, alkali metal salts of acids having ionization constants less than 1.5.times.10.sup.-4 and mixtures of said salts and alkali metal hydroxides and held at a temperature above 160.degree. F. to separate oil and sulfonate.

REFERENCES:
patent: 2828862 (1958-04-01), Johnson
patent: 3362533 (1968-01-01), Muller
patent: 3538179 (1970-11-01), Nelson
patent: 4260495 (1981-04-01), Bennoit et al.
patent: 4265780 (1981-05-01), Kimura et al.
patent: 4319980 (1982-03-01), Jenkins
Hackh's Chemical Dictionary, Julius Grant, Editor, 4th Edition, McGraw-Hill Book Co., N.Y. 1969, pp. 106 and 621.

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