Metalworking fluid recycling process with pasteurization by dire

Details Metalworking fluid recycling process with pasteurization by dire Metalworking fluid recycling process with pasteurization by dire

1994-12-12

1995-09-05

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210750, 210764, 210765, 210766, 210800, 210805, 210168, 210171, 210177, 210188, 210196, 210295, 184 614, 184 624, 1841041, 422 26, B01D 2100, B01D 3700, A61L 208

Patent

active

054476429

ABSTRACT:
A process for the recycling of used and contaminated water-based metalworking fluids comprising separation of solid contaminants by settling and filtration, and separation of unemulsifiable tramp oil, reduction in total dissolved solids, removal of destructive bacteria and fungi, and removal of odors and toxic gases by the injection of steam, said process not requiring the use of a centrifuge.

REFERENCES:
patent: 3602128 (1971-08-01), Lindkvist
patent: 3679051 (1972-07-01), Larson et al.
patent: 3897335 (1975-07-01), Brandt
patent: 4325663 (1982-04-01), Lee
patent: 4366069 (1982-12-01), Dudrey et al.
patent: 4521313 (1985-06-01), Wolde-Michael
patent: 4636317 (1987-01-01), Lewis
patent: 5158677 (1992-10-01), Hewitt et al.
Joe H. Wright, "Coolant Pasteurization-A Promising Answer?"; Manufacturing Engineering, Nov. 1984, pp. 83-84.

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