Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...
Patent
1976-06-09
1977-06-07
Spear, Jr., Frank A.
Cleaning and liquid contact with solids
Processes
Including regeneration, purification, recovery or separation...
210 43, 210 73W, 134 41, 2604125, C23G 102
Patent
active
040276856
ABSTRACT:
Used oil and water emulsion coolant recovered from can bodies in a can manufacturing process is processed to form reconstituted emulsion coolant by washing emulsion coolant adhering to can bodies off of the cans with an aqueous solution having a pH less than about 2.0 thereby forming a mixture of the emulsion coolant and the aqueous solution, heating the mixture to an elevated temperature sufficient to break a substantial portion of the emulsion coolant into a predominately hydrocarbon phase and a predominately aqueous phase, separating the predominately hydrocarbon phase from the predominately aqueous phase, adding a sufficient amount of water to the predominately hydrocarbon phase to reconstitute the emulsion coolant, adding a sufficient amount of an emulsifying agent or agents to the predominately hydrocarbon phase and the water to emulsify the predominately hydrocarbon phase and the water, and filtering the predominately hydrocarbon phase, the water and the emulsifying agent to form reconstituted emulsion coolant.
REFERENCES:
patent: 3243446 (1966-03-01), Funk
patent: 3301779 (1967-01-01), Kovacs
patent: 3471533 (1969-10-01), Kovacs
patent: 3846173 (1974-11-01), Ihrig
Heard George E.
McPherson, IV Thomas Buchanan
Castel Benoit
Coors Container Company
Klaas Bruce G.
Shelton Dennis K.
Spear, Jr. Frank A.
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