System and process for processing used emulsion coolant

Details System and process for processing used emulsion coolant System and process for processing used emulsion coolant

1983-10-03

1988-04-19

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 2101952, B01D 1300

Patent

active

047387815

ABSTRACT:
A system and process for processing a predominantly aqueous phase solution separated from an emulsion coolant recovered from can bodies in a can manufacturing process to recover reclaimable oil. A recirculation line is provided between an ultrafiltration device and a processing tank which receives a predominantly aqueous phase solution produced by acid cracking processing of the emulsion coolant. A substantially constant waste concentration level is maintained in the processing tank and, consequently, through an ultrafiltration device by bleeding concentrated retente from the recirculation line. The substantially constant waste concentration level extends the cleaning cycle period of the ultrafiltration device by an amount consistent with the ability to process concentrated retente bled from the recirculation line. The ultrafiltration device produces a permeate effluent which is consistent and suitable for discharge.

REFERENCES:
patent: 3472765 (1969-10-01), Budd et al.
patent: 3998740 (1976-12-01), Bost et al.
patent: 4276176 (1981-06-01), Shorr
patent: 4411781 (1983-10-01), Schnabel et al.
patent: 4426293 (1984-01-01), Mason et al.
Sonksen et al., "Treatment of Oily-A Case History", Published 1979, pp. 696-705.

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