Cleaning and liquid contact with solids – Processes – Including distortion or deformation of work
Patent
1993-01-08
1994-03-29
Breneman, R. Bruce
Cleaning and liquid contact with solids
Processes
Including distortion or deformation of work
134 10, 134 40, 134 42, 134152, 134166R, 134900, 100 37, 100 35, 100102, 210791, 210797, 210798, 25217421, 252DIG1, B01D 2446, B01D 4100, B08B 700, B30B 902
Patent
active
052980790
ABSTRACT:
A process for removing residual oil from used oil filters. The process includes washing the oil filters with a wash water while simultaneously crushing the oil filters. The wash water has a carefully selected and limited surfactant to effectively remove the residual oil while reducing emulsification of the removed residual oil into the wash water. The oil is recovered and the wash water is recirculated after having been amended with surfactant and/or water to assure that the surfactant remains within the desired limits.
REFERENCES:
patent: 3842001 (1974-10-01), Keller
patent: 4645608 (1987-02-01), Rayborn
patent: 5109763 (1992-05-01), Morris et al.
Breneman R. Bruce
El-Arini Zeinab
Young J. Winslow
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