Safe removal of gasses, water and solvents from used lubricating

Details Safe removal of gasses, water and solvents from used lubricating Safe removal of gasses, water and solvents from used lubricating

1997-04-25

1998-10-13

Caldarola, Glenn

Mineral oils: processes and products

Refining

Purifying used oil

208187, 202205, 202236, 202237, 196 98, 196114, 196128, 196133, C10G 3106, C10G 3300, B01D 100

Patent

active

058207481

ABSTRACT:
Gasses, water and solvents, major contaminants in used lubricating oils, can be removed from used lubricating oils at mild temperature conditions under vacuum. Apparatus in which the removal can take place includes a hollow vacuum separator vessel with a spray nozzle to spray an ultra fine spray of warm, used lubricating oil onto an angularly disposed thin film separator plate. In conjunction with the plate is a cooling device within the vacuum chamber. Cleaned oil can be passed from the bottom back into a holding tank, while water and solvents are drained out into a separate tank for safe disposal.

REFERENCES:
patent: 2702268 (1955-02-01), Egger et al.
patent: 4863570 (1989-09-01), Wijn
patent: 5328596 (1994-07-01), Gammie, II
patent: 5419814 (1995-05-01), Kunihiro et al.
patent: 5458739 (1995-10-01), Boucher et al.
British Railways Board, Letter from G.B. Buckley, 6 Jul. 1987.
U.S. application No. 07/326,333 Amendment, ca. 1990.

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