Mineral oils: processes and products – Refining – Purifying used oil
Patent
1982-03-05
1983-10-25
Gantz, Delbert E.
Mineral oils: processes and products
Refining
Purifying used oil
208181, 208252, 208253, C16M 1100
Patent
active
044117744
ABSTRACT:
A process is provided for removing contaminants from waste lubricating oil. The waste oil is contacted with one or more of the pretreatment chemicals ammonium sulphate, ammonium bisulphate, ammonium dihydrogen phosphate, diammonium phosphate, calcium hydrogen phosphate, phosphoric acid, calcium sulphate, aluminum sulphate, and magnesium sulphate. The contacting step is performed at a temperature of at least about 650.degree. F. The oil mixture is then filtered to remove the contaminants. The pretreatment chemical is preferably added in the absence of water, thereby reducing the amount of water to be removed from the oil.
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Gantz Delbert E.
Johnson E. P.
Prezlock Cynthia A.
Turbo Resources Ltd.
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