B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/13
B01D 61/14 (2006.01) C23G 5/04 (2006.01)
Patent
CA 1300034
SOLVENT CLEANSING APPARATUS ABSTRACT OF THE DISCLOSURE An apparatus is disclosed for cleansing an alipha- tic hydrocarbon solvent of an oil based contaminant. The apparatus includes a source of a contaminated solvent and an ultrafiltration filter having a semi-permeable membrane with a pore size selected to pass molecules of the solvent through the membrane and restrict passage through the membrane of molecules of the contaminant. A water cooled jacket is provided for maintaining the temperature of the solvent in the apparatus below a flash point. Pressure switches are provided for maintaining the pressure at the inlet of the ultrafiltration filter below a predetermined maximum to protect the filter. Concentrate of the ultra- filtration filter is recirculated to the source of the con- taminated solvent.
539474
Hilgren Wallace L.
Sim & Mcburney
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