Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1991-06-25
1993-07-06
Hruskoci, Peter
Liquid purification or separation
Processes
Ion exchange or selective sorption
123196A, 208182, 208183, 210749, 210805, 210806, 210168, 210909, B01D 3700
Patent
active
052250814
ABSTRACT:
Used lubricating oils can be rejuvenated by passing the oil through a filter system comprising a hollow solid composite that contains a thermoplastic binder and an active filter media of a chemically active filter media, a physically active filter media, or mixtures thereof. In a preferred embodiment, the composite is formed by forcing a substantially uniform mixture of thermoplastic binder particles, active filter media particles, solvent 600 Neutral base oil, and sodium stearate through an extrusion die of substantially uniform cross-section, wherein the mixture is subjected to heat, pressure, and cooling to consolidate the mixture so that it emerges from the die as a hollow solid composite. Most preferably, the composite will surround an inactive filter media located within the filter system.
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Ditsler John W.
Exxon Research and Engineering Co.
Hruskoci Peter
LandOfFree
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