Mineral oils: processes and products – Treatment of refining sludge
Patent
1989-02-21
1991-02-05
McFarlane, Anthony
Mineral oils: processes and products
Treatment of refining sludge
210770, 210774, 210787, 210806, C10G 1700
Patent
active
049902377
ABSTRACT:
Commercially valuable oil is recovered from refinery-produced, Resource Conservation and Recovery Act classified, hazardous waste oil sludges by a series of volatilizing and condensing steps (which may vary depending on the oil, water, and solids content of the sludge) resulting in the production of nonhazardous water and solid waste byproducts. A pumpable, low viscosity, high oil- and/or water-content sludge is first centrifuged to separate free oil and water, while the thick waste oil sludge, centrifuge solids, or other sludges low in oil and/or water content are heated to volatilize the contained water and oil. Dry, friable, deoiled solids are recycled with the oily sludge feed to prevent material agglomeration and heat exchanger fouling. Oil and water vapor from the high-temperature volatilization apparatus is recycled as an indirect heat source to the low-temperature volatilization apparatus. The volatilized oil and water are condensed and combined with the oil and water centrate, and the oil and water are essentially separated as by gravity in a settler. The separated oil is again centrifuged to remove any entrained water and solids. The nearly oil free, nonhazardous waste water and nonhazardous, deoiled solids can be disposed of in a conventional manner, and the commercially valuable recovered oil is suitable for further refinery processing.
REFERENCES:
patent: 1872963 (1932-08-01), Jones
patent: 1951739 (1934-03-01), Rodman et al.
patent: 3692668 (1972-09-01), McCoy et al.
patent: 3696021 (1972-10-01), Cole et al.
patent: 3923644 (1975-12-01), Hindman
patent: 3954602 (1976-05-01), Troesch et al.
patent: 4033859 (1977-07-01), Davidson et al.
patent: 4097378 (1978-06-01), St. Clair
patent: 4392941 (1983-07-01), Roth et al.
patent: 4512878 (1985-04-01), Reid et al.
patent: 4618735 (1986-10-01), Bridle et al.
patent: 4681660 (1987-07-01), Budny
patent: 4812225 (1989-03-01), Corti et al.
patent: 4839022 (1989-06-01), Skinner
Heuer Steven R.
Reynolds Victor R.
McFarlane Anthony
Peters R. Jonathan
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