Mineral oils: processes and products – Refining – Purifying used oil
Patent
1993-06-04
1996-05-07
Cross, E. Rollins
Mineral oils: processes and products
Refining
Purifying used oil
208181, 208251R, C10M17502
Patent
active
055142729
ABSTRACT:
A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 700 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil, allowing the acid sludge to settle within a period of approximately 24 to 72 hours, separating the acid-sludge-free oil from the acid sludge which settles out of solution as a result of addition of the oxidizing agent, and adding a polishing agent and separating the re-refined oil from the spent polishing agent. The process produces a high quality re-refined oil rapidly and economically.
REFERENCES:
patent: 3923643 (1975-12-01), Lewis et al.
patent: 3971713 (1976-07-01), Ellender, Jr.
patent: 3990963 (1976-11-01), Audibert et al.
patent: 4029569 (1977-06-01), Ivey, Jr.
patent: 4238241 (1980-12-01), Schneider
patent: 4502948 (1985-03-01), Tabler
patent: 4559128 (1985-12-01), Goodrich
patent: 5049256 (1991-09-01), Luce
Kirk-Othmer, "Asphalt" Encyclopedia of Chemical Technology, Third Edition, vol. 3, Antibiotics (Phenazines) to Bleaching Agents, pp. 299-382 (no date).
Interline Resources Corporation, "Interline Re-refining Process", Executive Summary, Oct. 1993.
M. L. Whisman, J. W. Goetzinger, and F. O. Cotton, "Petroleum Refinery Engineering", Report of Investigations 7884, Waste Lubricating Oil Research, p. 228, 1974.
W. L. Nelson, "Chemical Treatments", Petroleum Refinery Engineering, Fourth Edition, pp. 261/292-297, 1958.
English Translation of Patenschrift, DE 42 05 885 C1, for Bernard Meinken, Mar. 1993.
English Translation of Offenlegungsschrift, DE 42 05 884 A1, for Bernard Meinken, Sep. 1993.
N. J. Weinstein, "Disposal of Recovery Process Residues" Waste Oil Recycling and Disposal, Aug. 1974, p. 170.
"Waste Oil" Texy by Mueller Associates Inc. (1989).
Waste Lubricating Oil research, Report of Investigations, U.S. Dept of the Interior Rogers CB Morton Secretary, Bureau of Mines John D. Morgan, Jr. Act Director, 1974.
Petroleum Refinery Engineering, 4th Ed. McGraw Hill 1958. W. L. Nelson pp. 217, 228.
Cross E. Rollins
Fish Ronald
Griffin Walter D.
LandOfFree
Process for re-refining used oil does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for re-refining used oil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for re-refining used oil will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1224646