Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1995-01-20
1996-07-23
Drodge, Joseph W.
Liquid purification or separation
Processes
Ion exchange or selective sorption
134 10, 134 40, 210259, 210776, 210787, 210806, B01D 1200
Patent
active
055386466
ABSTRACT:
A method and system for removing oil from an oil absorbent material. The method comprises placing untreated oil containing material in a centrifuge, centrifuging the material to remove and recover a quantity of pure oil, soaking the material in a low-pH organic degreaser, centrifuging the material a second time to remove the remaining oil and the degreasing solution, separating, skimming and recovering the oil from the degreasing solution, and thereafter disposing the degreasing solution and drying the material. The present invention provides a method of maximizing the recovery of oil, which in turn allows the desorbed material to be recycled or reused and generates a waste degreasing solution that can released directly into a sewage system, thereby minimizing the environmental impact and cost of cleaning the oil absorbent material.
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patent: 4314856 (1982-02-01), Steimel
patent: 5005655 (1991-04-01), Stokke et al.
patent: 5192455 (1993-03-01), Marcel, Jr.
patent: 5244566 (1993-09-01), Bond
patent: 5250197 (1993-10-01), Marcel
patent: 5298079 (1994-03-01), Guymon
Drodge Joseph W.
Mann Michael A.
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